UK ISP profile
CityFibre
CityFibre is the UK's largest independent wholesale full-fibre network and does not sell broadband directly to consumers. Households buy via retail ISP partners on its Wholesale XGS-PON FTTP in over 80 UK towns and cities; the platform reported approximately 730,000 customer connections via partner ISPs at Q3 2025 (Quick facts table).
CityFibre is the UK's largest independent wholesale full-fibre network, supplying ISP partners including Vodafone, TalkTalk, Sky, Zen and Three Broadband across 80+ UK towns and cities.
What changed: Added answer capsule, key-facts block, question-led headings, network and switching sections, cross-links to compares and cities, and attributed Quick facts callout for AI citation, 3 June 2026.
Provider directory
For coverage, type, employee estimates and a BroadbandSwitch.uk link for this provider, see the UK provider directory table (613 providers).
Key facts
- Retail model: Wholesale only; consumers order via partner ISPs, not directly from CityFibre (About CityFibre section; Quick facts table).
- Network: Wholesale XGS-PON FTTP (Quick facts table).
- Speed range: Wholesale; retail tariffs depend on partner ISP (typically 100 Mbps to 2.5 Gbps) (Quick facts table).
- Headline price from: Wholesale; retail price set by ISP partner (Quick facts table).
- Major areas: Over 80 UK towns and cities; major ISP partners include Vodafone (anchor), Sky (live July 2025), TalkTalk, Zen Internet, Three Broadband, Cuckoo, Giganet and others (Quick facts table).
What are CityFibre's headline numbers?
| Parent group | CityFibre Holdings Limited (Goldman Sachs, Antin, Mubadala) |
|---|---|
| Founded | 2011 |
| HQ | London |
| UK customers | Wholesale platform; approximately 730,000 customer connections via partner ISPs at Q3 2025 |
| Network | Wholesale XGS-PON FTTP |
| Major areas | Over 80 UK towns and cities; major ISP partners include Vodafone (anchor), Sky (live July 2025), TalkTalk, Zen Internet, Three Broadband, Cuckoo, Giganet and others |
| Speed range | Wholesale; retail tariffs depend on partner ISP (typically 100 Mbps to 2.5 Gbps) |
| Headline price from | Wholesale; retail price set by ISP partner |
| Affiliate programme | Via retail ISP partners (TalkTalk, Vodafone, Zen, Sky etc) |
| Indicative CPA | POA via retail ISP affiliate teams |
| Last updated | 3 June 2026 |
What network does CityFibre use?
CityFibre uses Wholesale XGS-PON FTTP (Quick facts table). Major service areas listed on this profile: Over 80 UK towns and cities; major ISP partners include Vodafone (anchor), Sky (live July 2025), TalkTalk, Zen Internet, Three Broadband, Cuckoo, Giganet and others.
Who is CityFibre?
CityFibre is the UK's largest independent wholesale full-fibre network operator, with build commitments covering more than 8 million UK premises and live coverage in 80+ towns and cities. Major retail partners include Vodafone (anchor tenant), TalkTalk, Sky, Zen Internet, and Three Broadband. CityFibre does not sell directly to consumers; instead it provides the wholesale infrastructure on which retail ISPs run consumer services, typically at gigabit and multi-gigabit speeds. For consumers, CityFibre availability means more meaningful broadband competition and, typically, lower headline prices than Openreach FTTP in the same area.
What speeds does CityFibre offer?
- Wholesale XGS-PON full fibre
- Anchor tenancy with Vodafone
- Multi-ISP open access platform
- 80+ towns and cities live
- Build target over 8 million UK premises
Is CityFibre any good?
Major retail partners include Vodafone (anchor tenant), TalkTalk, Sky, Zen Internet, and Three Broadband. CityFibre does not sell directly to consumers; instead it provides the wholesale infrastructure on which retail ISPs run consumer services, typically at gigabit and multi-gigabit speeds. For consumers, CityFibre availability means more meaningful broadband competition and, typically, lower headline prices than Openreach FTTP in the same area. (About CityFibre section).
What partnerships and tenancy options apply to CityFibre?
CityFibre wholesale ISPs include Vodafone (anchor), TalkTalk, Sky, Zen Internet, Three Broadband and others. INCA member. Backed by Goldman Sachs, Antin Infrastructure Partners and Mubadala.
Acquiring CityFibre-intent traffic through the FBRE broadband network is one of the most efficient routes for ISPs and altnets that compete in CityFibre's footprint. Our network reach is verified at 12,000,000+ impressions and 730,000+ network clicks in the 12 months to 24 May 2026 (rolling average of 2,000+ clicks per day, rising fast), with network authority up to DR 74 on BroadbandSwitch.uk. See ISP advertising for tenancy tiers from £99 per month.
How do I switch to CityFibre?
Residential moves to CityFibre at an eligible address typically follow Ofcom One Touch Switch rules, with the gaining provider coordinating the transfer. Check CityFibre availability at your postcode before ordering; network technology and top speed vary by address (Quick facts table).
How does FBRE reach CityFibre switchers?
- Place a tenancy on the FBRE network, single site from £99 per month.
- Target sites with high CityFibre comparison intent (curated list on request).
- Optional comparison engine build via the FBRE build studio, from £7,950.
- Optional research collaboration via our research hub.
Where is CityFibre covered in our research?
FBRE comparison pages featuring CityFibre:
CityFibre is named as an operator on these city pages (sample):
- Broadband in Aberdeen
- Broadband in Bradford
- Broadband in Bristol
- Broadband in Cambridge
- Broadband in Coventry
- Broadband in Doncaster
- Broadband in Dundee
- Broadband in Edinburgh
See also UK broadband by city for the full city index.
Where does this CityFibre profile data come from?
This profile is compiled from public regulatory filings, the operator's published press releases, Ofcom Connected Nations data, and Ahrefs metrics. Figures marked POA or data pending reflect commercially confidential or not-yet-published data. See our methodology for full sourcing notes.