NETWORK GUIDE · WHOLESALE MATRIX · JUNE 2026
Who Owns the Fibre? The UK Wholesale Network Matrix
Most UK broadband brands do not own the cables they sell. This guide maps every major provider to the physical network it actually runs on, so you can see who really delivers your connection, why it shapes your speed, price and choice, and how 2026's consolidation is redrawing the map.
Written by Dr Alex J. Martin-Smith · Reviewed by Adrian James · Published 11 June 2026 · Footprints use thinkbroadband's independently mapped counts, April to June 2026 · Next review within 90 days · ~9 minute read
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The quick answer
Most UK broadband brands do not own the cables they sell. They rent space on a wholesale network. BT, EE, Sky, TalkTalk, Vodafone, Plusnet, NOW and Zen all ride Openreach. Sky, TalkTalk, Vodafone and Zen also sell on CityFibre. Virgin Media uses its own cable plus the nexfibre network, while altnets such as Hyperoptic and Community Fibre largely run fibre they built themselves.
There are two very different things behind the word "provider". The retailer is the brand you pay and that answers the phone. The wholesale network is the company that physically built the cable in your street. One network carries dozens of retailers, which is why the same speed can cost wildly different amounts depending on whose pipes it uses, and it shapes your real speed, your choice and how easily you can switch.
The UK wholesale network matrix
| Wholesale network | Technology | Premises passed | Retail brands that ride it |
|---|---|---|---|
| Openreach (BT Group) | FTTP and FTTC; XGS-PON in trial | 22.5m | BT, EE, Sky, TalkTalk, Vodafone, Plusnet, NOW, Zen, John Lewis and hundreds more |
| Virgin Media O2 (own) | Cable (DOCSIS 3.1) and XGS-PON | 18.8m | Virgin Media, giffgaff |
| CityFibre | Full fibre (XGS-PON) | 4.37m | Sky, TalkTalk, Vodafone, Zen, Cuckoo |
| Netomnia | XGS-PON and first UK 50G PON | 3.1m | YouFibre (own brand), B2B partners |
| nexfibre | Full fibre (XGS-PON) | 2.6m | Virgin Media, giffgaff |
| Community Fibre | Full fibre (XGS-PON) | 1.3m | Community Fibre (own), Vodafone |
| Hyperoptic | Own full fibre | 825k | Hyperoptic (own brand) |
| Gigaclear | Own full fibre (rural) | 618k | Gigaclear (own) and small resellers |
Premises figures use thinkbroadband's independently mapped "ready for service" counts (April to June 2026), the most conservative orderable benchmark. Operators' own press figures are often higher because they include premises built but not yet orderable. Openreach's own end-March 2026 footprint claim, for comparison, was 23 million. Brand-by-brand plans and pricing live in our provider guides.
How far each network actually reaches
Openreach is in a league of its own on scale, but the challengers are growing fast, and in many towns you now have three or four full-fibre networks competing for your custom. This is the single biggest reason broadband has become cheaper in real terms.
Why your network matters more than your brand
Two homes can buy "500 Mbit/s broadband" from the same retailer and get a very different experience, because one sits on full fibre and the other on part-fibre or cable. The network sets the ceiling; the brand just sells access to it (the full technology rundown: what is FTTP?). Three practical consequences:
- Upload speed. Altnet full fibre is often symmetric, so your upload matches your download. Cable and part-fibre uploads are capped far lower, which matters for video calls, cloud backups and creators, as the FTTP versus Virgin cable head-to-head shows in detail.
- Price competition. Where two or more networks overlap, retail prices fall. A street with Openreach plus an altnet almost always beats a single-network street on value.
- Switching friction. Moving between retailers on the same network is usually seamless under One Touch Switch. Moving between networks, say Virgin cable to an Openreach line, can need a new installation.
And if a network shows at your neighbour's address but not yours, that gap has seven specific causes and fixes, mapped in why can't I get full fibre when next door can?
Consolidation is reshaping the map
The UK built a lot of competing fibre very quickly, and 2026 is the year the networks start to merge. The headline event is nexfibre's proposed acquisition of Netomnia, which would create a challenger of real scale alongside Openreach and Virgin Media O2.
If it clears, the combined nexfibre and Netomnia footprint is expected to reach around 8 million premises by the end of 2027. CityFibre has objected, citing roughly 80% network overlap concentrated in the North West and the risk of a market dominated by two large players. For now the deal is at an early pre-investigation stage, so nothing has changed for customers yet.
The jargon, in plain English
| Term | What it means for you |
|---|---|
| FTTP | Fibre to the premises. A single optical fibre runs all the way into your home. Fastest and most reliable. |
| FTTC | Fibre to the cabinet. Fibre to the street box, then copper to your door, so speed falls with distance. |
| DOCSIS | The cable standard Virgin Media uses. Fast downloads, but uploads are capped by tier. |
| XGS-PON | The modern full-fibre standard most altnets use. Supports symmetric multi-gigabit speeds. |
| 50G PON | Next-generation fibre. Netomnia ran the UK's first commercial deployment in 2025. |
For retail market share and consolidation, see UK broadband market share 2026 and UK broadband price index 2026.
Questions people ask
Which providers use the Openreach network?
Most of the big names: BT, EE, Sky, TalkTalk, Vodafone, Plusnet, NOW, Zen and John Lewis Broadband all sell services on Openreach lines, alongside hundreds of smaller retailers. Several of those brands, including Sky, TalkTalk, Vodafone and Zen, also sell on CityFibre where it reaches.
Does Virgin Media use Openreach?
No. Virgin Media runs on its own cable network (DOCSIS 3.1) and on the nexfibre full fibre network, which is also used by giffgaff. That separate infrastructure is why moving between Virgin and an Openreach-based provider can need a new installation rather than a seamless switch.
What is the difference between a provider and a network?
The provider (retailer) is the brand you pay and that answers the phone; the wholesale network is the company that physically built and runs the cable in your street. One network carries dozens of retail brands, and the network, not the brand, sets your technology ceiling for speed and upload.
What is an altnet?
An alternative network: a fibre builder outside the two incumbents, Openreach and Virgin Media O2. CityFibre, Netomnia, nexfibre, Community Fibre, Hyperoptic and Gigaclear are the largest, and together the altnets have built fibre past millions of UK premises, often with symmetric speeds and keen pricing.
Is nexfibre buying Netomnia?
A merger deal was agreed in February 2026 and is at an early pre-investigation stage with the CMA as of June 2026. If it clears, the combined footprint is expected to reach around 8 million premises by the end of 2027; CityFibre has objected, citing roughly 80% network overlap. Nothing changes for customers yet.
About this guide
This guide is part of the BroadbandSwitch.uk 2026 Guide Library, published by BroadbandSwitch.uk, the consumer arm of the SearchSwitchSave network. Network footprint figures use thinkbroadband's independently mapped data as the conservative benchmark, with operator reporting cited alongside. Our approach to evidence and corrections is documented in the methodology and trust hub, and every published correction appears in the corrections log.
Take it with you: download the free 5-page PDF guide, including the full matrix, the reach chart and full sources.
Citing this guide: BroadbandSwitch.uk. (2026, June 11). Who owns the fibre? The UK wholesale network matrix. SearchSwitchSave. https://broadbandswitch.uk/guides/uk-wholesale-network-matrix/
Sources
- Adtran. (2025, May 22). Netomnia and Adtran deploy UK's first commercial 50G PON service. https://www.adtran.com/en/newsroom/press-releases/20250522-netomnia-and-adtran-deploy-uks-first-commercial-50g-pon-service
- BT Group plc. (2026, May 20). Results for the full year to 31 March 2026. https://newsroom.bt.com/
- Competition and Markets Authority. (2026). nexfibre / Substantial merger inquiry. https://www.gov.uk/cma-cases/nexfibre-slash-substantial-merger-inquiry
- Ferguson, A. (2026, April 14). Exclusive April 2026 update on Openreach full-fibre roll-out. https://www.thinkbroadband.com/news/exclusive-april-2026-update-on-openreach-full-fibre-roll-out
- Independent Networks Cooperative Association. (2026, March). State of the altnets 2026. https://inca.coop/state-of-the-altnets-2026/
- ISPreview UK. (2026, February 18). Netomnia agree UK broadband merger deal with owners of Virgin Media O2. https://www.ispreview.co.uk/index.php/2026/02/netomnia-agree-uk-broadband-merger-deal-with-owners-of-virgin-media-o2.html
- ISPreview UK. (2026, May). Community Fibre resume UK FTTP broadband build, targets 2 million plus premises. https://www.ispreview.co.uk/index.php/2026/05/community-fibre-resume-uk-fttp-broadband-build-targets-2-million-premises.html
- ISPreview UK. (2026, June). Rural full fibre broadband ISP Gigaclear publish annual UK accounts. https://www.ispreview.co.uk/index.php/2026/06/rural-full-fibre-broadband-isp-gigaclear-publish-annual-uk-accounts.html
- Ofcom. (2026). Connected Nations update: Spring 2026. https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/connected-nations-update-spring-2026
- Point Topic. (2026). The geography of fibre competition. https://www.point-topic.com/post/the-geography-of-fibre-competition-why-local-overlap-matters-for-cma-approval-of-nexfibre-netomnia
- thinkbroadband. (2026). nexfibre and the next chapter in UK fibre. https://www.thinkbroadband.com/news/nexfibre-and-the-next-chapter-in-uk-fibre
- Virgin Media O2. (2026, February 18). Q4 and full-year 2025 results. https://news.virginmediao2.co.uk/
This guide is general consumer information. Footprint figures are thinkbroadband's ready-for-service counts, April to June 2026, with operator claims often higher; brand-network relationships and the nexfibre-Netomnia transaction status are as published in mid-2026 and may change.