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CityFibre (operating)

CityFibre (operating) (est. 2015) is a UK altnet delivering full fibre broadband, offering an alternative to the traditional Openreach network.

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About CityFibre (operating)

This profile is built from our broadband market dataset and the sources linked on this page. We do not repeat unchecked marketing claims; numbers and dates match fields on file or linked evidence.

CityFibre is the UK's third-largest full fibre infrastructure provider with over 4.1 million premises covered (Q2 2025) and expanding rapidly to 8+ million. Operating a wholesale-only model, CityFibre's XGS-PON network supports retail ISPs including TalkTalk, Vodafone, Sky, Zen Internet, Giganet, Cuckoo and many more. Backed by Antin Infrastructure Partners, Goldman Sachs Asset Management, and Mubadala, CityFibre raised £4.9 billion in 2022 and is a leading BDUK Project Gigabit partner.

Key details

Year founded2015
ISPA member Listed member View ISPA members directory →
ADR schemeN/A
Parent companyCityFibre Holdings Limited
Legal name CityFibre Limited Companies House 09759465 →

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What stands out

  • UK's 3rd-largest full fibre infrastructure (4.1m+ premises)
  • Wholesale multi-ISP model supporting TalkTalk, Vodafone, Sky, Zen
  • XGS-PON 10Gbps capable
  • Major investor-backed

Recognition

  • Connected Britain Awards
  • ISPA Wholesale Network of the Year

Technologies on file

These labels come from our directory data for this provider. Short explanations below describe the technology terms in general; they are not a statement about availability at your address.

  • FTTP wholesale Full fibre to your door. Fastest and most reliable.

Coverage

UK - 80+ towns and cities nationwide (excl. London core and Hull)

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If something goes wrong

Here is where CityFibre (operating) sits within the UK consumer protection framework.

Regulator
Ofcom. Sets the General Conditions that CityFibre (operating) must follow.
Complaints
N/A.
Industry code
Operates under the ISPA Code of Practice.
Security
Cyber Essentials: Yes (NCSC Cyber Essentials certified)

Questions and answers

Straight answers from our directory fields for CityFibre (operating). If you need live pricing or availability, use the postcode tool or the provider link above.

Where can I verify CityFibre (operating)'s Companies House registration?
Companies House lists CityFibre Limited under company number 09759465. Open the official record using the Companies House link on this page.
What coverage note is on file for CityFibre (operating)?
Our dataset records: UK - 80+ towns and cities nationwide (excl. London core and Hull)
Is CityFibre (operating) in the BroadbandSwitch postcode comparison tool?
No. This provider is not currently among those we return in the postcode comparison tool. You can still compare other providers we list.
What does verification status mean on this profile?
This profile's verification status in our directory is recorded as: verified. That reflects our internal checks against the sources linked on this page, not a government endorsement.
Does this directory flag CityFibre (operating) as Ofcom-registered?
Yes. We record this provider as Ofcom-registered (General Conditions of entitlement). For complaints or disputes, follow the dispute route and Ofcom guidance that apply to your situation.
Which dispute resolution scheme does this directory list for CityFibre (operating)?
N/A.
Does this directory record ISPA Code of Practice adherence?
Yes. The ISPA Code of Practice field is set to yes in our dataset for this provider.
What is the BroadbandSwitch verification score?
It is an internal score from 1 to 10 based on how thoroughly we have checked Companies House, regulator and trade-body fields, and independent review data where available. It is not a measure of customer satisfaction.