Slough broadband deals 2026: a complete SL postcode guide

By Adrian James, broadband editor Reviewed by Dr Alex J. Martin-Smith Updated 7 May 2026 Approx 17 minute read

Slough is one of Berkshire's strongest broadband markets in 2026. This Berkshire town with population approximately 165,000 covers the historic SL postcode area extending from the main town through Eton, Windsor, Cippenham, Burnham, Datchet, Farnham Common, and surrounding South Buckinghamshire areas. Slough has approximately 89.14 percent FTTP coverage and approximately 77.44 percent Virgin Media cable coverage with approximately 96 percent gigabit-capable coverage per Switchity (62,586 premises analysis). Approximately 18 different providers serve a typical Slough SL postcode (Switchity SL3 7EQ analysis). CityFibre's £24m Slough primary build completed January 2024 per ISPreview with the network 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises) and approximately 500km of dense full fibre infrastructure deployed (more than two and a half times the length of the M25). Per Best Broadband Deals, Vodafone is currently the fastest widely available provider in Slough at up to 2.2 Gbps via the CityFibre network. Per Switchity, Sky offers a 5,000 Mbps service at £80/month over CityFibre's network. Virgin Media's Gig2 service reaches up to 2 Gbps in upgraded postcodes per Best Broadband Deals. Per Fibre Compare, average download speeds rose from approximately 87 Mbps to approximately 299 Mbps over the past four years thanks to ongoing rollouts of full fibre and Virgin Media cable upgrades. Distinctive Slough context includes the Slough Trading Estate (the largest single-site industrial estate in Europe under single ownership and home to many UK and global corporate headquarters); the substantial commuter context with London proximity; the Heathrow Airport adjacency; the Eton College and Windsor Castle adjacency; plus the diverse multi-cultural population and strong commercial sector. All Slough broadband customers benefit from the One Touch Switch process launched 12 September 2024, the Voluntary Code of Practice on Broadband Speeds, the Automatic Compensation scheme with updated April 2026 rates, and the Telecoms Consumer Charter introduced February 2026.

~89.14%Slough full fibre (FTTP) coverage in 2026 per Switchity

~77.44%Slough Virgin Media cable coverage per Switchity

~96%Slough gigabit-capable coverage per Switchity

£14-£80/moSlough 2026 home broadband range entry to multi-gigabit

In short

For most Slough households in 2026, the best 2026 starting points are: Three 5G home broadband at approximately £16 per month for 150 Mbps as the cheapest plug-and-play option; Vodafone Full Fibre 80 on Openreach or CityFibre at approximately £22 per month; Plusnet Full Fibre 74 from approximately £24 per month; Virgin Media M125 cable at approximately £27 per month with Slough's extensive 77.44 percent Virgin Media coverage per Switchity; plus distinctive CityFibre retail brand options including Sky, Vodafone, Zen, toob, Cuckoo, plus 4th Utility and Lit Fibre across most of Slough through CityFibre's £24m primary-build network covering approximately 80 percent of local premises per ISPreview. For top-tier needs, Vodafone Pro II at up to 2.2 Gbps on CityFibre is the fastest widely available provider in Slough per Best Broadband Deals; Sky Gigafast 5,000 Mbps £80/mo on CityFibre per Switchity; EE Full Fibre 1.6 Gbps £47.99/mo on Openreach widely available; Virgin Media Gig2 2 Gbps in upgraded postcodes; Virgin Media Gig1 1.1 Gbps widely. Distinctive Slough considerations include the rich altnet competition (toob 900 Mbps via CityFibre, 4th Utility approximately 70 percent of Slough via CityFibre per Fibre Compare from approximately £23/mo with 30-day contracts, Lit Fibre symmetric speeds with no mid-contract price hikes per Fibre Compare, Hyperoptic in MDU buildings, plus Trooli and OFNL); CityFibre supporting up to 2.5 Gbps with capability for symmetric 10 Gbps in the future per CityFibre; the average download speed jump from 87 Mbps to 299 Mbps over the past four years per Fibre Compare. Switch via One Touch Switch (launched 12 September 2024); typical switch downtime 1-2 hours for same-network transitions and effectively zero for cross-network switches.

Compare Slough broadband by postcode Best UK broadband deals (May 2026)

On this page

Slough broadband coverage in 2026
The four competing Slough network types explained
CityFibre's £24m Slough rollout (primary build complete)
Openreach providers in Slough (BT, Sky, Vodafone, TalkTalk, EE, Plusnet)
Virgin Media and Nexfibre cable network in Slough
Smaller Slough altnets: toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, OFNL
Slough 2026 broadband price comparison by tier
Slough broadband by SL postcode
5G home broadband and mobile alternatives
Slough in the wider Berkshire and Thames Valley context
Slough Trading Estate, working professionals, and Slough business sector
Switching Slough broadband in 2026
Five questions to ask before choosing

1. Slough broadband coverage in 2026

Slough is a major Berkshire town and significant UK commercial centre with population approximately 165,000. The SL postcode area covers Slough plus surrounding Berkshire and South Buckinghamshire areas, with SL1 covering the main town including Burnham, SL2 covering Farnham Common and Hedgerley, SL3 covering Datchet and Fulmer, and SL4 covering Old Windsor and Eton.

Headline 2026 Slough broadband coverage figures per multiple sources:

FTTP coverage: Approximately 89.14 percent of Slough premises have access to full fibre broadband per Switchity (62,586 premises analysis). Approximately 96 percent of Slough premises have access to gigabit speeds per Switchity (well above national averages). This combines Openreach FTTP, CityFibre wholesale FTTP (with the £24m primary build complete covering approximately 80 percent of local premises per ISPreview), plus altnet networks including toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, and OFNL.
Virgin Media cable coverage: Approximately 77.44 percent of Slough premises have access to Virgin Media's cable network per Switchity, including DOCSIS 3.1 plus Nexfibre XGS-PON in upgrading postcodes (Gig2 2 Gbps available in upgraded areas per Best Broadband Deals).
Gigabit-capable coverage: Approximately 96 percent of Slough premises can access gigabit speeds combining FTTP and Virgin Media's gigabit-capable cable per Switchity. Per Fibre Compare, residents in Slough can boast that they live in one of the UK's best places for full-fibre digital connectivity with a 96 percent chance of being able to get gigabit speeds.
Provider competition: Approximately 18 different providers typically serve a single Slough SL postcode (Switchity SL3 7EQ analysis).
Average download speed growth: Per Fibre Compare, Slough has experienced a huge jump in average download speeds over the past four years driven by ongoing rollouts of full fibre and Virgin Media cable upgrades, with the latest data by ThinkBroadband showing an increase from approximately 87 Mbps to approximately 299 Mbps.

What this means in practice for Slough households in 2026:

Most SL postcodes have multi-network choice. A typical Slough address commonly has Openreach FTTP, Virgin Media cable plus Nexfibre (extensive 77.44 percent coverage), CityFibre wholesale FTTP (with the £24m primary build complete reaching approximately 80 percent of local premises per ISPreview), plus typically at least one of toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, or OFNL, meaning genuine retail competition through approximately 18 providers per SL postcode per Switchity.
CityFibre's £24m Slough investment. Per ISPreview, CityFibre completed its £24m Slough rollout in January 2024 with the network 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises) and approximately 500km of dense full fibre infrastructure deployed (more than two and a half times the length of the M25). The build was supported by civil engineering firm VolkerSmart Technologies. Per CityFibre, the network supports download and upload speeds of up to 2.5 Gbps and is capable of supporting symmetrical speeds of up to 10 Gbps in the future.
Vodafone leads on speed via CityFibre. Per Best Broadband Deals, Vodafone is currently the fastest widely available provider in Slough offering speeds of up to 2.2 Gbps via the CityFibre network.
Sky Gigafast 5,000 Mbps available. Per Switchity, Sky offers a 5,000 Mbps service at £80/month over the CityFibre network.
Strong neighbourhood coverage patterns. Per Switchity's neighbourhood analysis, Cippenham and Burnham have comprehensive coverage from both Openreach FTTP, CityFibre, and Virgin Media; the town centre and Chalvey benefit from strong full fibre availability; Langley and Langley Park are well served by Openreach and CityFibre; Dorney and Eton Wick have more limited options at the rural fringes.
Continuing Openreach FTTP rollout. Openreach FTTP supports BT, Sky, Vodafone, TalkTalk, EE, Plusnet, NOW Broadband, plus Zen Internet across Slough, with continued FTTP build feeding into Openreach's 25 million UK premises target by December 2026.

The Slough 2026 broadband reality: coverage genuinely varies street-by-street within the SL postcode area. Approximately 89.14 percent FTTP, 77.44 percent Virgin Media, and approximately 96 percent gigabit-capable per Switchity. Slough ranks among the better-connected towns in Berkshire with over 96 percent gigabit availability putting it well ahead of national averages, and this coverage stems from substantial overlap between widespread Openreach full fibre (89 percent), Virgin Media's cable network (77 percent), and CityFibre's £24m primary-build network (about 80 percent of local premises). Per Fibre Compare, Slough residents enjoy 96 percent gigabit availability putting the town among the UK's best places for full-fibre digital connectivity. Always run a postcode check before signing.

2. The four competing Slough network types explained

Slough has four distinct broadband network types in 2026, each with different providers, pricing, and area coverage patterns. Understanding which networks reach your address is the first step in finding the right deal.

Network type	Operator	Providers using it	Typical Slough coverage
Openreach FTTP and FTTC	Openreach (BT Group)	BT, Sky, Vodafone, TalkTalk, EE, Plusnet, NOW Broadband, Zen, plus many smaller ISPs	Openreach FTTP across approximately 89 percent of Slough per Switchity; FTTC retains universal coverage as the baseline; EE Full Fibre 1.6 Gbps available across Openreach FTTP coverage
Virgin Media O2 cable plus Nexfibre XGS-PON	Virgin Media O2 (joint venture between Liberty Global and Telefonica); nexfibre joint venture (with InfraVia)	Virgin Media only (plus giffgaff via wholesale)	Approximately 77.44 percent of Slough premises per Switchity with Gig1 1.1 Gbps widely available across western and central Slough; Gig2 2 Gbps in upgraded postcodes per Best Broadband Deals through Project Mustang Nexfibre infill
CityFibre wholesale FTTP	CityFibre (third-largest UK full fibre operator with approximately 4.7 million UK premises per ISPreview March 2026)	Sky Gigafast 5 Gbps, Vodafone Pro II 2.2 Gbps (the fastest widely available provider in Slough per Best Broadband Deals), Vodafone Pro Broadband, TalkTalk, Zen Internet, iDNET, Cuckoo, 4th Utility, toob, Lit Fibre, Giganet, plus many smaller ISPs	£24m primary build complete per ISPreview with the network 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises); approximately 500km of dense full fibre infrastructure (more than two and a half times the length of the M25); supports up to 2.5 Gbps and capable of 10 Gbps symmetric in the future per CityFibre
Smaller Slough altnets	toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, plus OFNL	toob direct retail (via CityFibre); 4th Utility direct retail (via CityFibre); Lit Fibre direct retail (via CityFibre); Hyperoptic direct retail; Trooli direct retail; OFNL wholesale supporting various retail brands	toob 900 Mbps via CityFibre per toob; 4th Utility approximately 70 percent of Slough via CityFibre per Fibre Compare; Lit Fibre approximately 70 percent of Slough via CityFibre per Fibre Compare with symmetric speeds; Hyperoptic in MDU buildings; Trooli and OFNL in selected areas per Best Broadband Deals

How to think about which network is right for you:

For value at typical speeds (75-300 Mbps): Plusnet Full Fibre 74 from approximately £24 per month; Vodafone Full Fibre 80 on Openreach or CityFibre at approximately £22 per month; Virgin Media M125 cable at approximately £27 per month (Slough's extensive 77.44 percent Virgin Media coverage makes this widely available); NOW Broadband Brilliant Broadband from approximately £22-£24 per month for 36 Mbps; Three 5G home broadband at approximately £16 per month for 150 Mbps as the cheapest plug-and-play option (no engineer visit); 4th Utility on CityFibre from approximately £23 per month with 30-day contract options per Fibre Compare.
For premium speeds (1 Gbps+): Vodafone Pro II at up to 2.2 Gbps on CityFibre as the fastest widely available provider in Slough per Best Broadband Deals; Sky Gigafast 5,000 Mbps £80/mo on CityFibre per Switchity (one of the fastest UK residential broadband packages); EE Full Fibre 1.6 Gbps £47.99/mo on Openreach widely available; Virgin Media Gig1 at 1.1 Gbps widely; Virgin Media Gig2 at 2 Gbps in upgraded postcodes per Best Broadband Deals.
For symmetric upload speeds: CityFibre retail brands at higher tiers (including Vodafone Pro II 2.2 Gbps) offer symmetric speeds; toob on CityFibre offers fixed-price symmetric 900 Mbps with the toobpromise; 4th Utility offers symmetric speeds across every tier; Lit Fibre on CityFibre offers symmetric speeds without mid-contract rises per Fibre Compare; Hyperoptic offers symmetric upload at every tier. Major UK ISPs on Openreach typically offer asymmetric upload at lower tiers with symmetric at FTTP higher tiers; Virgin Media's cable network is asymmetric (download faster than upload), with Nexfibre XGS-PON offering symmetric speeds at higher tiers.
For social tariffs and lower household incomes: BT Home Essentials at £15/mo for 36 Mbps and £20/mo for 67 Mbps on Openreach; Sky Broadband Basics at £20/mo for 36 Mbps; Vodafone Pro Voucher Scheme; Virgin Media Essential Broadband and Essential Broadband Plus; Now Broadband Basics; Hyperoptic Fair Fibre at £12/mo for 50 Mbps in Hyperoptic-connected MDU buildings. All Slough social tariffs are exempt from mid-contract price rises.
For TV bundling: BT (with BT TV and BT Sport), Sky (with Sky TV and Sky Sports), Virgin Media (with Virgin Media TV 360 platform). CityFibre retail brands and other altnets typically don't offer TV bundling.
For mobile bundling: EE (for EE mobile customers), Vodafone (for Vodafone mobile customers). Virgin Media offers Volt cross-product benefits with O2 mobile.

3. CityFibre's £24m Slough rollout (primary build complete)

CityFibre's investment in Slough has been one of the more substantial recent altnet developments in Berkshire. Per ISPreview (January 2024), CityFibre completed its £24m project to deploy a 10 Gbps capable Fibre-to-the-Premises (FTTP) network across Slough with the network now 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises). The build was supported by civil engineering firm VolkerSmart Technologies and originally announced in October 2020. CityFibre is now the third-largest UK full fibre operator with approximately 4.7 million UK premises and 4.5 million ready for service per ISPreview (March 2026), with 848,000 customers per CityFibre disclosures.

What CityFibre offers Slough households:

£24m total investment per ISPreview's coverage of CityFibre's Slough rollout.
Approximately 42,000 homes 'Ready for Service' per ISPreview, covering about 80 percent of local Slough premises.
Approximately 500km of dense full fibre infrastructure per ISPreview (more than two and a half times the length of the M25).
Vodafone as launch partner per CityFibre, with TalkTalk, Giganet, and Zen also live retail partners.
Strong retail brand line-up through the CityFibre wholesale platform: Sky Gigafast 5 Gbps, Vodafone Pro II up to 2.2 Gbps, Vodafone Pro Broadband, TalkTalk, Giganet, Zen Internet, iDNET, Cuckoo, 4th Utility, toob, Lit Fibre, plus other smaller ISPs.
Speeds reaching up to 5,000 Mbps via Sky Gigafast on CityFibre at £80/month per Switchity (one of the fastest UK residential broadband packages).
2.5 Gbps support today, 10 Gbps capable for the future per CityFibre, with the network supporting download and upload speeds of up to 2.5 Gbps and capable of supporting symmetrical speeds of up to 10 Gbps in the future.
Substantial economic impact per Hatch consultancy report cited by CityFibre, with Slough set to experience over £487m in productivity and innovation gains and £107m from a widened workforce over a 15-year period; enabling 5G rollout alone could drive up to £1bn in positive economic impact.

CityFibre Slough retail brands and what they offer

The CityFibre wholesale platform supports a strong retail brand line-up across Slough. Major options include:

Vodafone Pro on CityFibre. Per Best Broadband Deals, Vodafone offers packages up to 2.2 Gbps in CityFibre coverage areas making it the fastest widely available provider in Slough. Vodafone Pro II at up to 2.2 Gbps on CityFibre with the Vodafone Pro Wi-Fi router and mesh extender (typically priced around £60-£70 per month). Vodafone Pro Broadband as the standard CityFibre tier from approximately £22 per month.
Sky Gigafast on CityFibre. Per Switchity, Sky offers a 5,000 Mbps service at £80/month over CityFibre's network, suiting demanding users with multiple devices, heavy uploads, or home office requirements.
4th Utility on CityFibre. Per Fibre Compare, 4th Utility offers fast, flexible, affordable full fibre with 30-day contract options and prices that start from £23 per month. Currently available to about 70 percent of Slough via the CityFibre network per Fibre Compare. 4th Utility offers symmetric speeds across every tier with a multi-gig 2.3 Gbps tier in CityFibre multi-gigabit areas.
toob on CityFibre. Per toob, the provider has partnered with CityFibre to bring toob's 900 Mbps service across Slough. toob offers fixed-price symmetric speeds (download and upload) with the toobpromise (absolute fixed price for contract term) and Linksys Wi-Fi 6 mesh router included.
Cuckoo on CityFibre. Distinctive Cuckoo proposition on CityFibre across Slough per Switchity.
Zen Internet on CityFibre. UK customer service satisfaction leader with Which? 84 percent customer satisfaction and PC Pro 22-year award streak; Zen does not apply mid-contract price rises during the contract term (Contract Price Promise). B Corp certified.
TalkTalk on CityFibre. Per CityFibre, TalkTalk is among the launch ISPs for Slough offering Future Fibre packages with traditional value positioning.
Lit Fibre on CityFibre. Per Fibre Compare, Lit Fibre offers full fibre speeds of up to 1 Gbps (with planned 2.5 Gbps upgrade) all symmetrical with a guarantee of no mid-contract price hikes. Currently available to about 70 percent of Slough via the CityFibre network per Fibre Compare.
Giganet on CityFibre. Per CityFibre, Giganet is among the live ISPs for Slough.

4. Openreach providers in Slough (BT, Sky, Vodafone, TalkTalk, EE, Plusnet)

Openreach is the network underpinning the majority of UK broadband connections, used by BT, Sky, Vodafone, TalkTalk, EE, Plusnet, NOW Broadband, Zen, and many other UK ISPs. Openreach's £15bn UK investment with target to reach 25 million UK premises by December 2026 (rising to 30 million by 2030) per Broadband Analyst includes substantial Slough FTTP build with Openreach FTTP across approximately 89 percent of Slough premises per Switchity.

Major Openreach providers in Slough with typical 2026 packages:

BT Full Fibre. BT is the major UK ISP brand on Openreach with mature TV bundle integration through BT TV plus BT Sport. BT Full Fibre 100 from approximately £30 per month; BT Full Fibre 500 around £40 per month; BT Full Fibre 900 around £45 per month. BT applies £4 per month flat April 2026 mid-contract rise from 31 March 2026.
Sky Broadband. Sky offers Openreach FTTP across most of Slough plus distinctive CityFibre Gigafast 5,000 Mbps £80 per month in CityFibre coverage areas per Switchity. Sky Full Fibre 100 around £28-£32 per month; Sky Full Fibre 900 around £42 per month. Sky applies £3 per month flat April 2026 mid-contract rise from 1 April 2026.
Vodafone. Vodafone offers Openreach FTTP packages alongside CityFibre packages (Vodafone is CityFibre's strategic ISP launch partner for Slough per CityFibre). Per Fibre Compare, Vodafone Full Fibre 80 from approximately £22 per month (rising to £27 on 1 April 2026); Vodafone Full Fibre 200 around £25 per month; Vodafone Full Fibre 500 around £29 per month (rising to £31 on 1 April 2026); Vodafone Pro II at up to 2.2 Gbps on CityFibre per Best Broadband Deals (typically around £60-£70 per month). Vodafone applies £3.50 per month April 2026 mid-contract rise for contracts post 2 July 2024.
EE on Openreach (BT Group). Per Best Broadband Deals, EE offers up to 1.6 Gbps over Openreach Full Fibre. EE Full Fibre 100 from approximately £30 per month; EE Full Fibre 1.6 Gbps at £47.99 per month making it one of Slough's most competitively-priced gigabit-plus options on Openreach.
TalkTalk on Openreach. TalkTalk Future Fibre packages with traditional value positioning. TalkTalk Future Fibre 65 from approximately £24 per month. TalkTalk also offers CityFibre packages where coverage reaches.
Plusnet on Openreach (BT Group value brand). Per Fibre Compare, Plusnet offers simple, straightforward broadband packages with no-frills pricing operating on the Openreach network with strong UK-based customer service. Plusnet Full Fibre 74 from approximately £24 per month; Plusnet Full Fibre 145 around £27 per month; Plusnet Full Fibre 500 around £33 per month.
NOW Broadband on Openreach (Sky-owned). Per Fibre Compare, NOW Broadband offers flexible broadband plans with no long-term contract, perfect for renters, students, or anyone wanting a shorter commitment. NOW Broadband Brilliant Broadband (FTTC, 36 Mbps) from approximately £22-£24 per month; NOW Broadband Super Fibre (FTTP up to 100 Mbps) around £28 per month.
Zen Internet. UK customer service satisfaction leader available on both Openreach and CityFibre across Slough. Zen Full Fibre 100 from approximately £35 per month; Zen does not apply mid-contract price rises during the contract term.

Openreach take-up and Slough context

Openreach FTTP take-up rates currently average approximately 38 percent in areas where FTTP is available per Broadband Analyst, with adoption rates already climbing above 50 percent in locations where fibre has been in place for a longer time. This progress keeps Openreach on track to meet its short-term goal of covering 25 million premises by December 2026. Once fibre is available to at least 75 percent of premises connected to a specific exchange, Openreach triggers stop-sell status for copper broadband packages, supporting the wider UK copper switch-off programme due to complete by January 2027. In Slough, Openreach FTTP at approximately 89 percent of premises per Switchity is well past the 75 percent stop-sell threshold for several Slough exchanges.

5. Virgin Media and Nexfibre cable network in Slough

Virgin Media O2 (joint venture between Liberty Global and Telefonica) operates an extensive Slough cable network covering approximately 77.44 percent of Slough premises per Switchity. Where Virgin Media's cable reaches, it uses DOCSIS 3.1 cable with speeds typically up to approximately 1.1 Gbps; the Nexfibre joint venture (with InfraVia and Liberty Global) is rolling out XGS-PON full fibre to extend Virgin Media's footprint and upgrade existing areas through Project Mustang. Per Best Broadband Deals, Virgin Media is widely available locally with Gig1 service (around 1.1 Gbps) covering much of the town and Gig2 (2 Gbps) available in upgraded postcodes.

Major Virgin Media Slough packages typically offered in 2026:

Virgin Media M125 Broadband Only. Approximately £27 per month for 132 Mbps; the cheapest cable-network entry option.
Virgin Media M250. Around £30-£33 per month for 264 Mbps.
Virgin Media M500. Around £36-£40 per month for 516 Mbps.
Virgin Media Gig1. Around £43-£48 per month for 1.1 Gbps; widely available across Slough's strong Virgin Media coverage.
Virgin Media Gig2. Around £55-£65 per month for 2 Gbps; appearing in upgraded Slough postcodes per Best Broadband Deals through Project Mustang Nexfibre infill.
Virgin Media TV bundles. Mature TV bundling with Virgin Media TV 360 platform; sports add-ons; popular with households where Virgin Media TV is genuinely useful.

Virgin Media applies different April 2026 mid-contract rise structures: £4 per month for new contracts and £3.50 per month for in-contract customers from April 2026. Virgin Media Essential Broadband (the social tariff) is exempt from mid-contract rises.

Virgin Media's Slough positioning in 2026. Virgin Media's extensive Slough coverage at approximately 77.44 percent of premises per Switchity makes it one of the most widely available gigabit-capable networks in the town with Gig1 1.1 Gbps widely available across western and central Slough and Gig2 2 Gbps appearing in upgraded postcodes through Project Mustang Nexfibre infill. Where Virgin Media's cable or Nexfibre coverage reaches an address, the competitive pricing and consistent gigabit availability make it a strong choice particularly for households prioritising download speed for streaming and standard household use. Where CityFibre, Openreach FTTP, or smaller altnets (especially toob with symmetric 900 Mbps and Vodafone Pro II 2.2 Gbps via CityFibre) also reach the address, the symmetric upload offered by altnets becomes a genuine consideration for working-from-home households and content creators.

6. Smaller Slough altnets: toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, OFNL

Beyond CityFibre (the dominant Slough altnet through the £24m primary-build network covering approximately 80 percent of local premises per ISPreview), Openreach, and Virgin Media plus Nexfibre, Slough has a remarkably strong altnet presence per Best Broadband Deals. Per Best Broadband Deals, Slough has an unusually high number of smaller fibre providers including toob, Hyperoptic, 4th Utility, Trooli, and OFNL.

toob on CityFibre. Per toob, the provider has partnered with CityFibre to bring toob's 900 Mbps service across Slough as part of its latest roll out across Berkshire. toob offers symmetric 900 Mbps download and upload speeds with no hidden fees; toob has been delivering full-fibre broadband since 2019 and now supplies over 125,000 homes across the UK. toob offers fixed-price symmetric speeds with the toobpromise.
4th Utility on CityFibre. Per Fibre Compare, 4th Utility offers fast, flexible, affordable full fibre with 30-day contract options and prices that start from £23. Currently available to about 70 percent of Slough via the CityFibre network per Fibre Compare. 4th Utility offers symmetric speeds across every tier with a multi-gig 2.3 Gbps tier available in CityFibre multi-gigabit areas.
Lit Fibre on CityFibre. Per Fibre Compare, Lit Fibre is everything you'd expect from an alternative network including full fibre speeds of up to 1 Gbps (with planned increase to 2.5 Gbps soon) all symmetrical (upload as fast as download); guarantee of no mid-contract price hikes. Lit Fibre comes through the CityFibre network in Slough and is currently available to about 70 percent of Slough's addresses per Fibre Compare.
Hyperoptic. Hyperoptic is a UK-wide altnet operating across 50+ UK cities specialising in MDU (multi-dwelling unit) buildings. Per ISPreview, Hyperoptic is present in a few MDUs (apartment blocks) in Slough. Hyperoptic offers symmetric upload speeds at every tier from 150 Mbps to 1 Gbps packages. Hyperoptic Fair Fibre social tariff at £12 per month for 50 Mbps for qualifying households on means-tested benefits. Hyperoptic ranks consistently among the top five UK ISPs in Ofcom satisfaction surveys.
Trooli. Per Best Broadband Deals, Trooli is one of the smaller fibre providers operating in parts of Slough.
OFNL. Per Best Broadband Deals, OFNL is among the altnets operating in parts of Slough.

Smaller altnet considerations for Slough households

For Slough households exploring smaller altnet options:

toob for symmetric 900 Mbps fixed-price. toob's CityFibre partnership covering Berkshire including Slough offers 900 Mbps symmetric download and upload with the toobpromise (fixed price for contract term). Particularly attractive for working-from-home households needing reliable upload.
4th Utility for 30-day contract flexibility. 4th Utility's 30-day contract options from approximately £23 per month per Fibre Compare make it particularly attractive for short-tenancy households across approximately 70 percent of Slough.
Lit Fibre for symmetric speeds without rises. Lit Fibre on CityFibre offers symmetric speeds up to 1 Gbps (with planned 2.5 Gbps upgrade) and no mid-contract price hikes per Fibre Compare across approximately 70 percent of Slough.
Hyperoptic for apartment blocks. Hyperoptic's MDU specialism makes it a strong choice for Slough apartment-block households where Hyperoptic has wayleave agreements and in-building infrastructure.
Trooli and OFNL for selected areas. Per Best Broadband Deals, both providers operate in parts of Slough, expanding the local altnet choice.
Building-by-building or street-by-street coverage. Smaller altnets typically operate building-by-building or street-by-street with coverage decided at the property level rather than across whole postcodes. Always run a postcode check at the specific provider's website.
Strong consumer protection framework applies. All UK altnets participating in OTS, the Voluntary Code of Practice on Broadband Speeds, the Automatic Compensation scheme, and the Telecoms Consumer Charter.

7. Slough 2026 broadband price comparison by tier

Comparing Slough broadband by speed tier helps surface genuine value across the multi-network landscape. Slough's combination of approximately 89 percent Openreach FTTP plus extensive 77.44 percent Virgin Media cable plus approximately 80 percent CityFibre coverage per ISPreview plus an unusually strong altnet selection (toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, OFNL) creates strong UK broadband price competition with approximately 18 providers per typical SL postcode.

Social tariff and entry tier (10-100 Mbps)

Typical price: £12-£24 per month introductory.

Where available: Across most of Slough with Three 5G home broadband, BT Home Essentials, Sky Broadband Basics, Vodafone Pro Voucher Scheme, Virgin Media Essential Broadband, plus Hyperoptic Fair Fibre in connected MDU buildings.

Best value picks: Three 5G home broadband £16/mo for 150 Mbps (no engineer visit, plug-and-play); Hyperoptic Fair Fibre £12/mo for 50 Mbps (means-tested) in connected MDU buildings; BT Home Essentials £15/mo for 36 Mbps (means-tested); Plusnet Full Fibre 74 ~£24/mo; Vodafone Full Fibre 80 ~£22/mo; NOW Broadband Brilliant Broadband £22-£24/mo.

Standard tier (100-300 Mbps)

Typical price: £22-£35 per month introductory.

Where available: Across most of Slough FTTP and Virgin Media coverage areas plus altnets.

Best value picks: Vodafone Full Fibre 80 ~£22/mo (rising to £27 on 1 April 2026 per Fibre Compare); BT Full Fibre 100 ~£30/mo; Sky Full Fibre 100 ~£28-£32/mo; Plusnet Full Fibre 145 ~£27/mo; Virgin Media M125 cable ~£27/mo (Slough's extensive 77.44 percent Virgin Media coverage makes this widely available); 4th Utility on CityFibre from ~£23/mo with 30-day contract options per Fibre Compare; Cuckoo on CityFibre across Slough; toob on CityFibre with 900 Mbps symmetric and the toobpromise.

Premium tier (500-900 Mbps)

Typical price: £30-£48 per month introductory.

Where available: Across Slough FTTP and Virgin Media gigabit coverage.

Best value picks: Plusnet Full Fibre 500 ~£33/mo; Vodafone Full Fibre 500 ~£29/mo (rising to £31 on 1 April 2026 per Fibre Compare); BT Full Fibre 500 ~£40/mo; Sky Full Fibre 900 ~£42/mo; EE Full Fibre 500 ~£41/mo; toob 900 Mbps symmetric on CityFibre with toobpromise; Lit Fibre on CityFibre at up to 1 Gbps symmetric without mid-contract rises per Fibre Compare; Zen Full Fibre 900 ~£49/mo without mid-contract rises (Contract Price Promise).

Multi-gigabit tier (1 Gbps+)

Typical price: £43-£80 per month introductory.

Where available: CityFibre coverage areas (Sky Gigafast 5,000 Mbps, Vodafone Pro II 2.2 Gbps as fastest widely available per Best Broadband Deals), Virgin Media Gig1 widely (with Slough's strong 77.44 percent Virgin Media coverage), Virgin Media Gig2 in upgraded postcodes, Openreach FTTP gigabit areas (BT Full Fibre 900, Sky Full Fibre 900, EE Full Fibre 1.6 Gbps).

Best value picks: Virgin Media Gig1 ~£43-£48/mo; EE Full Fibre 1.6 Gbps £47.99/mo (one of Slough's most competitively-priced gigabit-plus options on Openreach); Vodafone Pro II 2.2 Gbps ~£60-£70/mo (the fastest widely available provider in Slough per Best Broadband Deals); Virgin Media Gig2 2 Gbps ~£55-£65/mo where available; 4th Utility 2.3 Gbps multi-gig on CityFibre symmetric where coverage reaches; Sky Gigafast 5,000 Mbps £80/mo on CityFibre per Switchity (one of the fastest UK residential broadband packages).

Slough 2026 broadband pricing key insight. Multi-network competition (Openreach FTTP at approximately 89 percent, extensive Virgin Media plus Nexfibre at approximately 77.44 percent, CityFibre wholesale through the £24m primary build covering approximately 80 percent of local premises per ISPreview, plus toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, and OFNL) gives Slough households strong UK broadband pricing across all tiers with approximately 18 providers per typical SL postcode. Three 5G home broadband at approximately £16 per month for 150 Mbps is the cheapest plug-and-play entry option. Vodafone Full Fibre 80 at approximately £22 per month is competitive value for standard tier needs. 4th Utility on CityFibre at approximately £23/mo with 30-day contract options offers distinctive flexibility. At the top tier, Vodafone Pro II 2.2 Gbps on CityFibre is the fastest widely available provider per Best Broadband Deals; Sky Gigafast 5,000 Mbps £80/mo on CityFibre and EE Full Fibre 1.6 Gbps £47.99/mo on Openreach offer the very fastest options. Always calculate total contract cost including standard pricing after introductory periods end and April 2026 mid-contract rises (£3-£4 per month for major UK ISPs; altnets typically without mid-contract rises, including toob's toobpromise, Lit Fibre's no-rises guarantee, and Zen's Contract Price Promise).

8. Slough broadband by SL postcode

Coverage genuinely varies postcode-by-postcode and street-by-street within the Slough SL postcode area covering Slough plus surrounding Berkshire and South Buckinghamshire areas. Postcode-level checking remains essential. This section gives an indicative postcode-by-postcode summary based on verified network footprints from Switchity's neighbourhood analysis plus Fibre Compare's SL postcode patterns.

Postcode area	Locations covered	Typical 2026 networks	Distinctive features
SL1	Main town, Burnham, Cippenham, Chalvey	Openreach FTTP, Virgin Media plus Nexfibre, CityFibre (Cippenham and Burnham have comprehensive coverage per Switchity), Hyperoptic (city centre MDUs), plus 4th Utility, Lit Fibre, toob on CityFibre	Per Fibre Compare, SL1 sees virtually everywhere accessing superfast and full-fibre broadband, with widespread options for ultrafast connections via Openreach, CityFibre, and Virgin Media networks. Per Switchity, Cippenham and Burnham have comprehensive coverage from Openreach FTTP, CityFibre, and Virgin Media; the town centre and Chalvey benefit from strong full fibre availability though CityFibre's network has not reached Chalvey and Virgin Media coverage becomes more limited
SL2	Farnham Common, Hedgerley, Stoke Poges	Openreach FTTP, Virgin Media plus Nexfibre, CityFibre (selected areas)	Per Fibre Compare, SL2 offers similarly strong broadband infrastructure with full-fibre coverage reaching deep into residential areas and cable networks enhancing speed choice
SL3	Datchet, Fulmer, Langley, Langley Park, Iver Heath	Openreach FTTP, CityFibre (Langley and Langley Park well served per Switchity), Virgin Media (sparse in eastern areas per Switchity)	Per Fibre Compare, SL3 has high FTTP availability ensuring ultrafast speeds are common, supported by both fibre and cable providers. Per Switchity, Langley and Langley Park are well served by Openreach and CityFibre networks but Virgin Media coverage is sparse in these eastern areas
SL4	Old Windsor, Eton, Eton Wick, Dorney	Openreach FTTP, plus Virgin Media plus Nexfibre (selective in rural fringes per Switchity)	Per Fibre Compare, SL4 sees full-fibre Openreach networks well-established, complementing superfast coverage and localised cable services. Per Switchity, Dorney and Eton Wick have more limited options with patchy full fibre coverage and fewer alternative providers operating in these rural fringes
SL5 (adjacent)	Sunningdale, Ascot	Openreach FTTP, Virgin Media plus Nexfibre (selective), plus growing altnet rollout	Royal Berkshire / Surrey border
SL6 (adjacent)	Maidenhead, Bray, Cookham	Openreach FTTP, Virgin Media plus Nexfibre, plus growing altnet rollout	Maidenhead is an adjacent Berkshire town with its own broadband market

Postcode-level checking remains essential in Slough

Coverage genuinely varies street-by-street even within well-served Slough SL postcodes. Most SL postcodes have multi-network choice through Openreach FTTP (the largest Slough FTTP network at approximately 89 percent of premises), Virgin Media plus Nexfibre (extensive 77.44 percent coverage), CityFibre wholesale (with the £24m primary build complete reaching approximately 80 percent of local premises per ISPreview), plus toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, and OFNL. Per Switchity, the strong altnet presence across the borough means independent providers often compete on price, so it's worth comparing multiple options at your specific address. Running a postcode check at provider websites (BT, Sky, Virgin Media, Vodafone for both Openreach and CityFibre, plus altnet checkers including CityFibre, toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli) plus the BroadbandSwitch.uk postcode comparison hub at https://broadbandswitch.uk/compare-broadband-by-postcode.html reveals the genuine option set at your specific Slough address.

9. 5G home broadband and mobile alternatives

5G home broadband from Three, EE, Vodafone, plus mobile broadband from O2 and Smarty offer alternatives to fixed broadband in Slough in 2026. Slough has substantial 5G coverage from major UK mobile operators with strong outdoor signal across most SL postcodes in the central town area, supported by Slough's Heathrow Airport adjacency and Thames Valley commercial sector.

Three 5G home broadband. Three 5G home broadband at approximately £16 per month for 150 Mbps is one of the cheapest plug-and-play options in Slough with strong 5G signal coverage; no engineer visit needed; setup typically same-day; transferable between addresses without engineer visit. Particularly attractive for short-tenancy households and households unsure whether to commit to a fixed broadband contract.
EE 5G home broadband. EE 5G home broadband leverages EE's substantial UK 5G investment. Pricing typically around £30-£40 per month for unlimited 5G home broadband; Smart 5G Hub included. Particularly attractive for households already on EE mobile.
Vodafone GigaCube 5G. Vodafone's 5G home broadband proposition; pricing typically around £30-£35 per month. Particularly attractive for households already on Vodafone mobile (and Vodafone is also a CityFibre retail partner across Slough for fixed broadband as the launch partner per CityFibre).
O2 5G home broadband. O2's 5G home broadband proposition leverages the O2 mobile network (now part of Virgin Media O2).
4G as fallback. Where 5G signal is limited (typically rural Buckinghamshire-area locations like Dorney and Eton Wick), 4G home broadband from major UK operators offers continued coverage at slightly lower speeds (typically 30-100 Mbps).

When 5G home broadband makes most sense in Slough

5G home broadband is particularly attractive for Slough households where:

Strong 5G signal at the address. Run a coverage check at the chosen 5G provider's website (Three, EE, Vodafone, O2) to verify outdoor and indoor signal at the specific address; central Slough (SL1, SL2) typically has stronger 5G than rural Buckinghamshire fringes (SL3, SL4 outer).
Short-tenancy or rental households. 5G home broadband is plug-and-play with no engineer visit required and is transferable between addresses; ideal for short rental periods, Heathrow-area workers, and seasonal workers.
Avoiding installation hassle. No engineer visit, no internal cabling work, no external infrastructure required (just a 5G hub).
Mobile bundling households. EE 5G home broadband makes most sense for households already on EE mobile; Vodafone 5G home broadband for Vodafone mobile customers; Three 5G home broadband for households comparing across all providers.
Backup or secondary connection. 4G/5G home broadband as a backup line alongside fixed broadband for working-from-home households where reliability matters.

10. Slough in the wider Berkshire and Thames Valley context

Slough is one of Berkshire's principal towns within the wider South East England region and the Thames Valley commercial corridor. Slough's broadband market sits alongside the rest of Berkshire (Reading, Bracknell, Wokingham, Newbury, Maidenhead, Windsor) plus the wider Thames Valley (Oxfordshire, Buckinghamshire, parts of Surrey) within the UK regional broadband landscape.

Superfast Berkshire programme. Per Slough Borough Council, the Superfast Berkshire project aims to improve broadband speeds and coverage for businesses and residents across the wider Berkshire area.
CityFibre's wider Berkshire investment. Per ISPreview, CityFibre has built networks across the Thames Valley including Slough plus other Berkshire locations. toob's CityFibre partnership covers Berkshire including Slough as part of toob's latest roll out.
Berkshire location guides. Berkshire BroadbandSwitch.uk location guides include Reading (Berkshire neighbour), plus Crawley and South Hampshire (wider South East England regional coverage).
Heathrow Airport adjacency context. Slough's proximity to Heathrow Airport (London's largest airport) drives substantial commercial and commuter broadband demand, with the Slough Trading Estate and surrounding business parks hosting many UK and global corporate headquarters.
Eton and Windsor adjacency. SL4 covers Old Windsor and Eton with Eton College and Windsor Castle as iconic landmarks; broadband demand reflects the mixed residential and tourism context.
UK FTTP context. Slough's approximately 89.14 percent FTTP coverage per Switchity is well above UK national averages and reflects the cumulative impact of Openreach FTTP rollout, CityFibre's £24m primary build, plus the substantial altnet sector.

Slough's wider broadband regional position in 2026

Slough occupies a distinctive position in the UK regional broadband landscape: per Switchity, Slough ranks among the better-connected towns in Berkshire with over 96 percent gigabit availability putting it well ahead of national averages. Per Fibre Compare, Slough residents can boast that they live in one of the UK's best places for full-fibre digital connectivity with a 96 percent chance of being able to get gigabit speeds, way above the national average. The combination of substantial Openreach FTTP rollout (approximately 89 percent of premises), extensive Virgin Media coverage at approximately 77.44 percent of premises with Project Mustang Nexfibre infill bringing Gig2 2 Gbps to upgraded postcodes, CityFibre's £24m primary-build network covering approximately 80 percent of local premises per ISPreview supporting up to 2.5 Gbps with capability for 10 Gbps symmetric in the future, plus the unusually strong altnet sector (toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, OFNL) gives Slough households genuine multi-network choice. Combined with Slough's Thames Valley commercial corridor position plus the Heathrow Airport adjacency, Slough's broadband landscape demonstrates the cumulative impact of substantial commercial investment.

11. Slough Trading Estate, working professionals, and Slough business sector

Slough hosts the Slough Trading Estate (the largest single-site industrial estate in Europe under single ownership and home to many UK and global corporate headquarters), substantial commuter populations heading into central London, plus the diverse multi-cultural commercial sector spanning Heathrow Airport-related businesses, professional services, and retail. Together with short-tenancy households, these residents often have specific broadband needs distinct from established homeowner households: shorter contract preferences, lower setup hassle, plug-and-play options, value-focused entry-level packages, plus genuine working-from-home symmetric upload requirements.

Three 5G home broadband at approximately £16 per month for 150 Mbps. One of the cheapest plug-and-play options across Slough; no engineer visit needed; setup typically same-day; transferable between addresses. Ideal for Heathrow-area workers and short-tenancy professionals.
4th Utility on CityFibre with 30-day contracts from approximately £23 per month per Fibre Compare. Particularly attractive for short-tenancy households across approximately 70 percent of Slough.
toob on CityFibre at 900 Mbps symmetric. Per toob, fixed-price symmetric speeds with the toobpromise across Slough as part of toob's Berkshire rollout via CityFibre. Particularly attractive for working-from-home households needing reliable upload.
Hyperoptic 1-month rolling options. Hyperoptic's contract flexibility is distinctive among UK fixed broadband providers; particularly relevant for short-let buildings in central Slough where Hyperoptic operates in MDU buildings per ISPreview.
Hyperoptic Fair Fibre at £12 per month for 50 Mbps for qualifying households on means-tested benefits. Free setup; no annual price rises during the social tariff period.
BT Home Essentials at £15 per month for 36 Mbps on Openreach for qualifying households on Universal Credit and similar benefits.
Vodafone Full Fibre 80 on Openreach or CityFibre at approximately £22 per month. Competitive value with mobile bundling for households on Vodafone mobile.
For working from home with video calls, cloud syncing, content creation: Vodafone Pro II 2.2 Gbps on CityFibre as the fastest widely available provider in Slough per Best Broadband Deals; CityFibre retail brands offering symmetric speeds; 4th Utility's symmetric speeds across every tier with multi-gig 2.3 Gbps; toob's fixed-price symmetric 900 Mbps; Hyperoptic's symmetric upload across all packages; Lit Fibre's symmetric speeds without mid-contract rises.

Slough business broadband context

For Slough businesses across the Slough Trading Estate (the largest single-site industrial estate in Europe under single ownership), Heathrow Airport-related businesses, the Thames Valley commercial corridor, plus the wider Slough business sector:

Business broadband options. See the BroadbandSwitch.uk business broadband UK 2026 guide for SME, professional services, retail, and hospitality broadband options including SLA-backed reliability, static IP, 4G backup, and multi-site connectivity.
Multi-site businesses. Vodafone Business, BT Business, TalkTalk Business, Virgin Media Business, plus altnet business propositions through Vodafone Pro and CityFibre business retail brands (CityFibre's £487m+ productivity and innovation impact projection per Hatch consultancy report cited by CityFibre).
Static IP options. See the BroadbandSwitch.uk static IP business broadband guide for businesses needing dedicated IP addresses, particularly relevant for Slough Trading Estate corporate headquarters.
4G backup for high-availability working. See the BroadbandSwitch.uk business broadband with 4G backup guide.
Card machines and EPOS dependency. See the BroadbandSwitch.uk broadband for card machines and EPOS guide for retail and hospitality businesses across Slough's commercial sector.

12. Switching Slough broadband in 2026

Switching broadband providers in Slough is straightforward in 2026 thanks to the One Touch Switch process which launched 12 September 2024. This section documents the practical Slough switching considerations.

One Touch Switch process. Most UK ISPs participate including BT, EE, Plusnet, Sky, NOW Broadband, Vodafone, TalkTalk, Three Broadband, Virgin Media O2, plus most major altnets (CityFibre retail brands via Vodafone, Sky, TalkTalk, Zen, 4th Utility, Lit Fibre, Cuckoo, toob, Giganet, plus Hyperoptic). Per Switchity, thanks to Ofcom's One Touch Switch, changing providers in Slough requires just a single request: simply sign up with your new supplier and they will manage the cancellation of your old contract automatically.
Switching downtime. Same-network transitions (for example Sky to BT both on Openreach) typically 1-2 hours of switch downtime; cross-network switches (for example Openreach to CityFibre or Virgin Media to a CityFibre retail brand) typically have effectively zero downtime as the new line is provisioned in parallel and activated when ready, with the old line then ceased.
14-day cooling-off period. UK consumer regulation requires 14-day cooling-off for distance contracts.
Mid-contract switching considerations. Exit fees during contract term affect switching economics; verify exit fee terms before switching. Per Switchity, check your early termination fee first as some new providers will pay it for you, or try haggling with your current provider's retention team. Voluntary Code of Practice on Broadband Speeds gives termination right if speeds consistently fall below the Guaranteed Minimum Speed estimate after a 30-day fix window.
Engineer visit considerations. Some technology changes require engineer visits including FTTC to FTTP migration and Openreach to altnet transitions. Most major UK ISPs schedule engineer visits within 1-2 weeks of order; some altnets schedule longer.
Mid-contract rises. Major UK ISPs apply £3-£4 per month April 2026 mid-contract rises; per Fibre Compare, Vodafone Full Fibre 80 increases to £27 on 1 April 2026 (from £22) and Vodafone Full Fibre 500 increases to £31 on 1 April 2026 (from £29). Most altnets including Hyperoptic, Lit Fibre (no mid-contract price hikes per Fibre Compare), plus Zen Internet (Contract Price Promise), toob (toobpromise), and 4th Utility offer fixed pricing or no mid-contract rises during the contract term.

Practical Slough switching tips

For most Slough households switching in 2026:

Check postcode availability across all Slough networks first. Openreach FTTP (the largest Slough FTTP network at approximately 89 percent of premises), Virgin Media plus Nexfibre (extensive 77.44 percent coverage), CityFibre wholesale (with the £24m primary build complete covering approximately 80 percent of local premises per ISPreview), plus toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, and OFNL to surface the genuine option set.
Calculate total contract cost. Include introductory pricing multiplied by introductory months plus standard pricing multiplied by remaining contract months plus April 2026 mid-contract rises (£3-£4 per month for major UK ISPs; altnets typically without rises).
Verify Guaranteed Minimum Speed. Address-specific GMS estimate at sign-up reveals realistic speed expectations.
Plan switching timing around current contract expiry. Switching at contract end avoids exit fees in most cases.
Use One Touch Switch. Initiate through new provider; new provider handles notification of old provider.
Leverage Slough's strong network competition. Slough's combination of approximately 89 percent Openreach FTTP plus extensive 77.44 percent Virgin Media plus approximately 80 percent CityFibre coverage plus the unusually strong altnet sector (toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, OFNL) creates genuine pricing competition; comparing across networks frequently reveals significant savings versus staying with an existing provider.

13. Five questions to ask before choosing

Before signing a Slough broadband contract in 2026, work through these five questions to confirm the package matches genuine household needs.

What speed do I actually need? Light usage households typically comfortable with 30-75 Mbps (Three 5G home broadband £16/mo; BT Home Essentials £15/mo for qualifying households). Standard households (multi-device, regular streaming, working from home) typically comfortable with 100-300 Mbps (Vodafone Full Fibre 80 from approximately £22/mo; Virgin Media M125 cable £27/mo; 4th Utility on CityFibre from ~£23/mo). Heavy households benefit from 500+ Mbps (BT Full Fibre 500 ~£40/mo; Plusnet Full Fibre 500 ~£33/mo; toob 900 Mbps symmetric on CityFibre; Lit Fibre on CityFibre at up to 1 Gbps symmetric). Multi-gigabit (1+ Gbps) makes sense for content creation, multiple working-from-home users with heavy uploads, technology professionals (Vodafone Pro II 2.2 Gbps on CityFibre as the fastest widely available provider in Slough per Best Broadband Deals; Sky Gigafast 5,000 Mbps £80/mo on CityFibre per Switchity; EE Full Fibre 1.6 Gbps £47.99/mo). Most Slough households find 100-300 Mbps comfortable. See speed and needs hub for detailed framework.
Which networks reach my exact SL postcode? Coverage genuinely varies street-by-street within Slough. Most SL postcodes have multi-network choice with approximately 18 providers per typical SL postcode through Openreach FTTP, Virgin Media plus Nexfibre (extensive 77.44 percent coverage), CityFibre wholesale (with the £24m primary build complete covering approximately 80 percent of local premises per ISPreview), plus toob, 4th Utility, Lit Fibre, Hyperoptic, Trooli, and OFNL. Always run a postcode check before signing. CityFibre has not reached Chalvey per Switchity, and Virgin Media coverage becomes more limited there.
What's the total contract cost over the term? Calculate introductory pricing multiplied by introductory months plus standard pricing multiplied by remaining contract months plus April 2026 mid-contract rises (£3-£4 per month for major UK ISPs; altnets typically without rises). Per Fibre Compare, Vodafone Full Fibre 80 increases to £27 on 1 April 2026 and Full Fibre 500 increases to £31. The cheapest introductory monthly price doesn't always have the cheapest total contract cost.
Do I need symmetric upload? Working from home with video calls, cloud syncing, content creation, live streaming, or hosting all benefit from symmetric upload (upload speed equal to download). Vodafone Pro II 2.2 Gbps on CityFibre as the fastest widely available provider in Slough per Best Broadband Deals offers symmetric speeds; CityFibre retail brands at higher tiers offer symmetric speeds; toob on CityFibre offers fixed-price symmetric 900 Mbps with the toobpromise; 4th Utility offers symmetric speeds across every tier with multi-gig 2.3 Gbps; Lit Fibre on CityFibre offers symmetric speeds with no mid-contract price hikes per Fibre Compare; Hyperoptic offers symmetric upload at every tier. Major UK ISPs on Openreach typically asymmetric upload at lower tiers; Virgin Media's cable network is asymmetric (download faster than upload), with Nexfibre XGS-PON offering symmetric speeds at higher tiers.
What customer service quality and consumer protection matter to me? Where customer service quality is a primary consideration, Zen Internet's UK customer service satisfaction leadership with Which? 84 percent customer satisfaction and PC Pro 22-year award streak plus Contract Price Promise is a meaningful differentiator; Hyperoptic's top-five Ofcom customer satisfaction position with approximately 4 complaints per 100,000 customers; Hyperoptic's minimum speed guarantee at advertised speeds; toob's toobpromise offering absolute fixed price for contract term; Lit Fibre's no mid-contract price hikes per Fibre Compare. All providers participate in the Voluntary Code of Practice on Broadband Speeds, the Automatic Compensation scheme with updated April 2026 rates, and the Telecoms Consumer Charter introduced February 2026.

Frequently asked questions about Slough broadband

What broadband speeds and coverage are available in Slough in 2026?

Slough has approximately 89.14 percent FTTP coverage and approximately 77.44 percent Virgin Media cable coverage with approximately 96 percent gigabit-capable coverage per Switchity (62,586 premises analysis). Per Fibre Compare, Slough residents enjoy 96 percent gigabit availability putting the town among the UK's best places for full-fibre digital connectivity, way above the national average. Approximately 18 different providers serve a typical Slough SL postcode (Switchity SL3 7EQ analysis). Headline speeds available include FTTC (35-80 Mbps), FTTP (typically 100 Mbps to 1.6 Gbps with provider variations), Virgin Media cable (up to 1.1 Gbps Gig1 widely; 2 Gbps Gig2 in upgraded postcodes per Best Broadband Deals), CityFibre (up to 5,000 Mbps via Sky Gigafast at £80/month per Switchity, with CityFibre's network supporting up to 2.5 Gbps and capable of 10 Gbps symmetric in the future per CityFibre). CityFibre's £24m Slough primary build completed January 2024 per ISPreview with the network 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises) and approximately 500km of dense full fibre infrastructure deployed. Average download speeds have risen from approximately 87 Mbps to approximately 299 Mbps over the past four years per Fibre Compare. All Slough households benefit from One Touch Switch since 12 September 2024, the Voluntary Code of Practice on Broadband Speeds, the Automatic Compensation scheme with updated April 2026 rates, and the Telecoms Consumer Charter introduced February 2026.

What is the best broadband in Slough in 2026?

The best Slough broadband in 2026 depends on what's available at your address and your specific needs. Per Best Broadband Deals, Vodafone is currently the fastest widely available provider in Slough offering speeds of up to 2.2 Gbps via the CityFibre network; Virgin Media's Gig2 service reaches up to 2 Gbps in upgraded postcodes; EE offers up to 1.6 Gbps over Openreach Full Fibre. For value at typical speeds, Three 5G home broadband at approximately £16 per month for 150 Mbps is one of the cheapest plug-and-play options (no engineer visit, transferable between addresses); Vodafone Full Fibre 80 on Openreach or CityFibre at approximately £22 per month is competitive value for fixed broadband; 4th Utility on CityFibre from approximately £23 per month with 30-day contract options per Fibre Compare; Plusnet Full Fibre 74 from approximately £24 per month; Virgin Media M125 cable at approximately £27 per month with Slough's extensive 77.44 percent Virgin Media coverage; toob on CityFibre at 900 Mbps symmetric with the toobpromise. For premium speeds, Vodafone Pro II at up to 2.2 Gbps on CityFibre as the fastest widely available provider per Best Broadband Deals; Sky Gigafast at 5,000 Mbps £80/mo on CityFibre per Switchity; EE Full Fibre 1.6 Gbps at £47.99 per month on Openreach. For social tariffs, BT Home Essentials at £15 per month for 36 Mbps; Hyperoptic Fair Fibre at £12/mo for 50 Mbps in connected MDU buildings. Always run a postcode check.

What does CityFibre's £24m Slough rollout offer households?

Per ISPreview (January 2024), CityFibre completed its £24m project to deploy a 10 Gbps capable Fibre-to-the-Premises (FTTP) network across Slough. The network is 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises) per ISPreview, with approximately 500km of dense full fibre infrastructure (more than two and a half times the length of the M25). The build was supported by civil engineering firm VolkerSmart Technologies and originally announced in October 2020. Per CityFibre, the network supports download and upload speeds of up to 2.5 Gbps and is capable of supporting symmetrical speeds of up to 10 Gbps in the future. CityFibre's strong Slough retail brand line-up includes Vodafone Pro II at up to 2.2 Gbps as the fastest widely available provider per Best Broadband Deals (typically £60-£70/mo); Sky Gigafast 5,000 Mbps £80/mo per Switchity; Vodafone Pro Broadband as the launch partner per CityFibre; TalkTalk, Giganet, Zen Internet, iDNET as additional live ISPs per CityFibre; 4th Utility from £23/mo with 30-day contract options per Fibre Compare; toob 900 Mbps symmetric with the toobpromise per toob; Cuckoo; Lit Fibre with symmetric speeds and no mid-contract price hikes per Fibre Compare. Per CityFibre and Hatch consultancy report, Slough stands to experience over £487m in productivity and innovation gains and £107m from a widened workforce over a 15-year period.

What other altnets are active in Slough beyond CityFibre?

Beyond CityFibre (the dominant Slough altnet through the £24m primary-build network covering approximately 80 percent of local premises per ISPreview), Slough has an unusually strong altnet sector per Best Broadband Deals. toob has partnered with CityFibre to bring toob's 900 Mbps service across Slough as part of toob's Berkshire roll out per toob; toob offers symmetric 900 Mbps with the toobpromise (fixed price for contract term). 4th Utility on CityFibre is currently available to about 70 percent of Slough per Fibre Compare with 30-day contracts from £23/month and symmetric speeds across every tier including a multi-gig 2.3 Gbps tier. Lit Fibre on CityFibre is available to about 70 percent of Slough per Fibre Compare with full fibre speeds up to 1 Gbps (planned 2.5 Gbps upgrade) all symmetrical with no mid-contract price hikes. Hyperoptic operates as a UK-wide altnet specialising in MDU (multi-dwelling unit) buildings and is present in a few MDUs in Slough per ISPreview, with Hyperoptic Fair Fibre social tariff at £12/mo for 50 Mbps. Trooli and OFNL operate in parts of Slough per Best Broadband Deals. All UK altnets participate in OTS, the Voluntary Code of Practice on Broadband Speeds, the Automatic Compensation scheme, and the Telecoms Consumer Charter.

What's the fastest broadband currently available in Slough?

Several Slough options compete at the top of the speed tier in 2026. Per Best Broadband Deals, Vodafone is currently the fastest widely available provider in Slough offering speeds of up to 2.2 Gbps via the CityFibre network in selected areas (the Vodafone Pro II package, typically £60-£70 per month with the Vodafone Pro Wi-Fi router and mesh extender). Per Switchity, Sky offers a 5,000 Mbps service at £80/month over the CityFibre network making it one of the fastest UK residential broadband packages. Virgin Media's Gig2 at 2 Gbps reaches upgraded postcodes per Best Broadband Deals (Gig2 typically costs around £55-£65 per month). EE's Full Fibre 1.6 Gbps at £47.99 per month on Openreach is widely available across Slough per Best Broadband Deals and offers strong value at this tier. 4th Utility offers a multi-gig 2.3 Gbps tier on CityFibre with symmetric speeds where coverage reaches. Lit Fibre on CityFibre offers symmetric 1 Gbps with planned 2.5 Gbps upgrade per Fibre Compare. toob offers 900 Mbps symmetric on CityFibre with the toobpromise. CityFibre's network supports download and upload speeds of up to 2.5 Gbps and is capable of supporting symmetrical speeds of up to 10 Gbps in the future per CityFibre. For households needing the absolute fastest option, postcode checking reveals which premium-tier packages are live at the specific address.

Which Slough SL postcodes have the best broadband coverage?

Coverage genuinely varies postcode-by-postcode within the Slough SL area. Per Fibre Compare: SL1 (main town, Burnham) sees virtually everywhere accessing superfast and full-fibre broadband with widespread options for ultrafast connections via Openreach, CityFibre, and Virgin Media; SL2 (Farnham Common, Hedgerley) offers similarly strong broadband infrastructure; SL3 (Datchet, Fulmer) has high FTTP availability ensuring ultrafast speeds are common; SL4 (Old Windsor, Eton) has well-established full-fibre Openreach networks complementing superfast coverage and localised cable services. Per Switchity's neighbourhood analysis: Cippenham and Burnham have comprehensive coverage from Openreach FTTP, CityFibre, and Virgin Media giving residents the widest choice; the town centre and Chalvey benefit from strong full fibre availability though CityFibre has not reached Chalvey and Virgin Media coverage becomes more limited there; Langley and Langley Park are well served by Openreach and CityFibre but Virgin Media coverage is sparse in eastern areas; Dorney and Eton Wick have more limited options at the rural fringes. Adjacent SL5 (Sunningdale, Ascot) and SL6 (Maidenhead, Bray, Cookham) extend the broader Slough broadband area. Always run a postcode check before signing.

Are there UK broadband social tariffs available in Slough?

Yes. UK households on Universal Credit, Pension Credit, Income Support, Income-based Jobseeker's Allowance, Income-related Employment and Support Allowance, and similar benefits typically qualify for social tariffs at £12-£20 per month. Major Slough social tariff options include BT Home Essentials at £15/mo for 36 Mbps and £20/mo for 67 Mbps both on Openreach; Sky Broadband Basics at £20/mo for 36 Mbps; Vodafone Pro Voucher Scheme; Virgin Media Essential Broadband and Essential Broadband Plus; Now Broadband Basics; Hyperoptic Fair Fibre at £12/mo for 50 Mbps in Hyperoptic-connected MDU buildings (limited Slough availability per ISPreview, with Hyperoptic present in a few MDUs). All Slough social tariffs are exempt from mid-contract price rises. Eligibility verification typically happens through the Department for Work and Pensions or similar government databases. See the BroadbandSwitch.uk social tariffs UK 2026 guide for comprehensive coverage.

How do I switch broadband in Slough in 2026?

Switching broadband providers in Slough is straightforward in 2026 thanks to the One Touch Switch process which launched 12 September 2024. Per Switchity, thanks to Ofcom's One Touch Switch, changing providers in Slough requires just a single request: simply sign up with your new supplier and they will manage the cancellation of your old contract automatically. Most UK ISPs participate including BT, EE, Plusnet, Sky, NOW Broadband, Vodafone, TalkTalk, Three Broadband, Virgin Media O2, plus most major altnets (CityFibre retail brands via Vodafone, Sky, TalkTalk, Zen, 4th Utility, Lit Fibre, Cuckoo, toob, Giganet, plus Hyperoptic). Same-network transitions (for example Sky to BT both on Openreach) typically 1-2 hours of switch downtime; cross-network switches (for example Openreach to CityFibre or Virgin Media to a CityFibre retail brand) typically have effectively zero downtime as the new line is provisioned in parallel and activated when ready, with the old line then ceased. 14-day cooling-off period under UK consumer regulation for distance contracts allows reconsideration shortly after sign-up. Mid-contract switching incurs exit fees in most cases (proportional to remaining months); Voluntary Code of Practice on Broadband Speeds gives termination right if speeds consistently fall below the Guaranteed Minimum Speed estimate after a 30-day fix window. Practical Slough switching tips: check postcode availability across all networks first; calculate total contract cost including April 2026 mid-contract rises (£3-£4 per month for major UK ISPs; altnets typically without rises including toob's toobpromise, Lit Fibre's no-rises guarantee, and Zen's Contract Price Promise); leverage Slough's strong network competition.

Authoritative UK sources informing this Slough broadband guide

Switchity: Broadband deals Slough covering 89.14 percent FTTP, 77.44 percent Virgin Media coverage, ~96 percent gigabit-capable coverage; SL3 7EQ postcode analysis with 18 providers; neighbourhood patterns covering Cippenham, Burnham, town centre, Chalvey, Langley, Langley Park, Dorney, Eton Wick; Sky 5,000 Mbps £80/month over CityFibre. Available at switchity.co.uk.
Best Broadband Deals: Best Broadband Deals in Slough (March 2026) covering Vodafone Pro II 2.2 Gbps via CityFibre as fastest widely available; Virgin Media Gig2 2 Gbps in upgraded postcodes; EE 1.6 Gbps over Openreach Full Fibre; CityFibre coverage across most of Slough; tens of thousands of homes; toob, Hyperoptic, 4th Utility, Trooli, OFNL altnets operating in Slough. Available at bestbroadbanddeals.co.uk.
Fibre Compare: Broadband Deals in Slough covering 96 percent gigabit availability; SL1 (main town, Burnham), SL2 (Farnham Common, Hedgerley), SL3 (Datchet, Fulmer), SL4 (Old Windsor, Eton) postcode patterns; download speed growth from 87 Mbps to 299 Mbps over four years; 4th Utility 30-day contracts from £23/mo via CityFibre at approximately 70 percent of Slough; Lit Fibre symmetric speeds up to 1 Gbps with planned 2.5 Gbps upgrade and no mid-contract price hikes; Vodafone Full Fibre 80 rising to £27 on 1 April 2026, Vodafone Full Fibre 500 rising to £31 on 1 April 2026. Available at fibrecompare.com.
ISPreview UK: CityFibre UK Completes Full Fibre Broadband Rollout in Slough (January 2024) covering the £24m investment, approximately 42,000 homes 'Ready for Service' (about 80 percent of local premises), approximately 500km of dense full fibre infrastructure (more than two and a half times the length of the M25), VolkerSmart Technologies as build partner; Hyperoptic in a few MDUs; CityFibre Presentation Talks Wholesale, Take-up and Future UK Broadband Plans (March 2026) covering the wider 4.7 million UK premises footprint and 848,000 customers. Available at ispreview.co.uk.
CityFibre: CityFibre kick starts Slough's Full Fibre future and CityFibre's primary-build in Slough is now complete covering Vodafone as launch partner, TalkTalk, Giganet, Zen as additional ISPs, network supporting up to 2.5 Gbps and capable of 10 Gbps symmetric in the future, £487m+ productivity and innovation gains and £107m widened workforce impact per Hatch consultancy report. Available at cityfibre.com.
toob: toob has arrived in Slough covering toob's CityFibre partnership across Berkshire bringing 900 Mbps symmetric service to Slough; toob has been delivering full-fibre broadband since 2019 supplying over 125,000 homes across the UK. Available at toob.co.uk.
Slough Borough Council: Broadband in Berkshire covering the Superfast Berkshire project for businesses and residents. Available at slough.gov.uk.
Broadband Analyst: Openreach FTTP rollout context including 25 million UK premises target by December 2026, ~38 percent take-up rising above 50 percent in mature areas. Available at broadbandanalyst.co.uk.
Ofcom Voluntary Code of Practice on Broadband Speeds: Address-specific Guaranteed Minimum Speed at sign-up. Available at ofcom.org.uk.
BroadbandSwitch.uk best UK broadband deals (May 2026): broadbandswitch.uk/best-broadband-deals-uk-may-2026.html.
BroadbandSwitch.uk compare-by-postcode hub: broadbandswitch.uk/compare-broadband-by-postcode.html.
BroadbandSwitch.uk speed and needs hub: broadbandswitch.uk/speed-and-needs-hub.html.
BroadbandSwitch.uk switching hub: broadbandswitch.uk/switching-hub.html.
BroadbandSwitch.uk methodology and trust hub: broadbandswitch.uk/methodology-and-trust-hub.html.
BroadbandSwitch.uk affiliate disclosure: broadbandswitch.uk/affiliate-disclosure.html.
BroadbandSwitch.uk editorial policy: broadbandswitch.uk/editorial-policy.html.

Best UK broadband deals (May 2026) Compare by postcode

How we put this Slough broadband guide together

This Slough broadband guide documents the genuine 2026 broadband landscape for the SL postcode area covering Slough town in Berkshire (population approximately 165,000). Verified facts include Slough having approximately 89.14 percent FTTP coverage and approximately 77.44 percent Virgin Media cable coverage with approximately 96 percent gigabit-capable coverage per Switchity (62,586 premises analysis); approximately 18 different providers serving a typical Slough SL3 7EQ postcode (Switchity); CityFibre's £24m Slough primary build completed January 2024 per ISPreview with the network 'Ready for Service' across almost 42,000 homes (about 80 percent of local premises) and approximately 500km of dense full fibre infrastructure deployed (more than two and a half times the length of the M25); CityFibre supporting up to 2.5 Gbps with capability for 10 Gbps symmetric in the future per CityFibre; Vodafone as launch partner per CityFibre with TalkTalk, Giganet, and Zen as additional live ISPs; Vodafone Pro II at up to 2.2 Gbps via CityFibre as the fastest widely available provider in Slough per Best Broadband Deals; Sky 5,000 Mbps service at £80/month over CityFibre per Switchity; Virgin Media Gig1 (1.1 Gbps) covering much of Slough plus Gig2 (2 Gbps) in upgraded postcodes per Best Broadband Deals; EE up to 1.6 Gbps over Openreach Full Fibre per Best Broadband Deals; toob 900 Mbps symmetric via CityFibre with the toobpromise per toob; 4th Utility approximately 70 percent of Slough via CityFibre from £23/month with 30-day contracts and symmetric speeds across every tier per Fibre Compare; Lit Fibre approximately 70 percent of Slough via CityFibre with symmetric speeds up to 1 Gbps and planned 2.5 Gbps upgrade and no mid-contract price hikes per Fibre Compare; Hyperoptic in a few MDUs per ISPreview with Fair Fibre social tariff at £12/mo for 50 Mbps; Trooli and OFNL operating in parts of Slough per Best Broadband Deals; Switchity's neighbourhood analysis covering Cippenham and Burnham (comprehensive multi-network coverage), town centre and Chalvey (strong full fibre though CityFibre not reached Chalvey and Virgin Media more limited), Langley and Langley Park (well served by Openreach and CityFibre with Virgin Media sparse in eastern areas), Dorney and Eton Wick (more limited rural fringe options); Fibre Compare's SL1 (main town, Burnham), SL2 (Farnham Common, Hedgerley), SL3 (Datchet, Fulmer), SL4 (Old Windsor, Eton) postcode patterns; download speed growth from approximately 87 Mbps to approximately 299 Mbps over the past four years per Fibre Compare; Vodafone Full Fibre 80 rising to £27 on 1 April 2026 (from £22) and Vodafone Full Fibre 500 rising to £31 on 1 April 2026 (from £29) per Fibre Compare; Three 5G home broadband at £16/month for 150 Mbps; CityFibre being the third-largest UK full fibre operator with approximately 4.7 million UK premises and 4.5 million ready for service per ISPreview March 2026; CityFibre's 848,000 customers per CityFibre disclosures; Hatch consultancy report cited by CityFibre showing Slough set to experience over £487m in productivity and innovation gains and £107m from a widened workforce over a 15-year period plus enabling 5G rollout alone could drive up to £1bn in positive economic impact; Openreach's £15bn UK investment with target to reach 25 million UK premises by December 2026 (and 30 million by 2030); Openreach FTTP at approximately 89 percent of Slough premises being well past the 75 percent stop-sell threshold for several Slough exchanges; Virgin Media's extensive Slough coverage with Project Mustang Nexfibre XGS-PON infill; the major UK ISP April 2026 mid-contract rises with most altnets typically without rises; the Voluntary Code of Practice on Broadband Speeds; the Automatic Compensation scheme with updated April 2026 rates; the Telecoms Consumer Charter introduced February 2026; the One Touch Switch process launched 12 September 2024; the 14-day cooling-off period under UK consumer regulation; the social tariffs at £12-£20 per month for qualifying households; the Slough Trading Estate (the largest single-site industrial estate in Europe under single ownership and home to many UK and global corporate headquarters); the Heathrow Airport adjacency context; the Eton College and Windsor Castle adjacency in SL4; the Superfast Berkshire programme per Slough Borough Council; the named credentialled editorial team comprising Dr Alex J. Martin-Smith (head of editorial, founder, holding CMgr MBA LLM DBA credentials reflecting management qualifications, legal training, and doctoral-level research) and Adrian James (broadband editor with editorial background combined with sustained focus on UK telecoms, regulatory frameworks, and consumer journalism) operating under documented two-stage editorial workflow where Adrian writes and Alex reviews; and the structural editorial-commercial separation documented in the affiliate disclosure with comprehensive UK altnet inclusion regardless of affiliate relationships.

Editorial: Written by Adrian James, broadband editor. Reviewed by Dr Alex J. Martin-Smith, head of editorial. Last updated 7 May 2026; next review within 90 days. Corrections welcome via our corrections process.

How we earn: BroadbandSwitch.uk is independent. We sometimes earn affiliate fees from broadband switching deals; this never affects which providers we cover or how we describe them. See our affiliate disclosure and editorial policy.

References

Switchity. (2026). Broadband deals Slough. Switchity. https://switchity.co.uk/broadband-areas/slough/
ISPreview UK. (2024, January). Cityfibre UK Completes Full Fibre Broadband Rollout in Slough. ISPreview. https://www.ispreview.co.uk/index.php/2024/01/cityfibre-uk-completes-full-fibre-broadband-rollout-in-slough.html
Best Broadband Deals. (2026, March). Best Broadband Deals in Slough. Best Broadband Deals. https://bestbroadbanddeals.co.uk/broadband/check-my-area/slough/