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Who is CityFibre?
CityFibre is a UK-based digital infrastructure provider that designs, builds, owns, and operates wholesale full-fibre networks for broadband and Ethernet connectivity.
- Nationwide full-fibre network build and operation for residential, business, and public sector connectivity (network infrastructure).
- Wholesale access services for Internet Service Providers (ISP) and channel partners (connectivity services).
- Enterprise and carrier-grade Ethernet and dark fibre offerings for high-capacity connectivity (WAN and metro networking).
- Fibre network solutions to support 5G and mobile network operator backhaul requirements (mobile backhaul).
- Infrastructure services enabling smart city, Internet of Things (IoT), and digital public services use cases (smart infrastructure enablement).
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More About CityFibre
CityFibre is a digital infrastructure company focused on the deployment and operation of full-fibre networks across the United Kingdom, providing wholesale connectivity services rather than retail broadband to end users.
The company builds and owns fibre-to-the-premises (FTTP) and fibre-to-the-home (FTTH) infrastructure, targeting homes, businesses, and public sector sites, and makes this capacity available to ISP (ISPs), communications providers, and channel partners that package and sell services to consumers and enterprises.
From an enterprise and institutional perspective, CityFibre’s networks provide high-bandwidth, low-latency links suitable for site-to-site connectivity, internet access, and data centre interconnect over Ethernet (enterprise networking) and dark fibre (optical networking), with architectures based on Passive Optical Network (PON) or point-to-point fibre models depending on location and use case.
These services support use in corporate Wide Area Network (WAN) designs, local government and education networks, healthcare connectivity, and other multi-site environments that require predictable bandwidth and symmetric upload and download performance, integrated by service providers or system integrators into wider Software-Defined Wide Area Network (SD-WAN), cloud connectivity, and security architectures.
CityFibre’s infrastructure is also used for mobile backhaul (mobile networking), providing fibre connectivity between mobile network operator cell sites, aggregation points, and core network locations, which supports dense 4G and 5G deployments that depend on scalable transport capacity and consistent latency characteristics.
The company positions its footprint as an alternative wholesale fibre platform in the UK market, with coverage concentrated in a growing number of cities and towns, and its open-access model allows multiple ISPs and communications providers to deliver broadband and Ethernet services over the same underlying network.
Technically, CityFibre’s offerings align with standard fibre access and transport technologies, including GPON or XGS-PON for FTTP access (broadband access), carrier Ethernet services over fibre for business connectivity (carrier Ethernet), and dark fibre routes for organisations that operate their own optical equipment and require bespoke routing or capacity planning.
In marketplace and directory terms, CityFibre fits into categories such as wholesale fibre network operator, full-fibre broadband infrastructure provider, enterprise and carrier Ethernet provider, dark fibre provider, and mobile backhaul infrastructure provider, serving ISPs, carriers, enterprises, and public sector bodies that require underlying physical and layer-2 connectivity rather than managed application-layer services.
Our description of CityFibre. Updated December 2025.
