UK ISP profile
CityFibre
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.
Quick facts
| 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 | May 2026 |
About 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.
Key services
- 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
Partnerships and tenancy
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 to 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.
Data and methodology
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.