Broadband ISP Technology

The graphs on this introductory page are regularly updated and should give you some indication as to the status of national broadband performance, access, uptake and availability in the United Kingdom.

At present home internet access is primarily delivered over fixed lines and through a variety of different technologies, which are explained in the above categories. Ofcom (telecoms regulator) splits these services into two camps based on their performance:

Broadband Speed Definitions (Ofcom)

Decent Broadband
Services that supply actual internet download speeds of at least 10Mbps (1Mbps uploads), which is generally delivered using ADSL technology over existing copper telephone lines.

Superfast Broadband
Services that supply download speeds of at least 30Mbps (Ofcom and EU definition), which are most commonly provided through fibre optic and or coaxial cables in the form of Hybrid Fibre / Fibre-to-the-Cabinet (FTTC), Fibre-to-the-Premises (FTTP / FTTH) or cable (DOCSIS). It's worth noting that most government (BDUK Phase 1 + 2) supported broadband schemes define superfast as 24Mbps+, while later phases adopt the 30Mbps+ definition.

Ultrafast Broadband
Services that supply headline download speeds of at least 300Mbps (Ofcom's definition), which are most commonly provided through pure fibre optic cables (FTTP) or in the form of advanced hybrid fibre solutions (G.fast, XG.Fast, DOCSIS). NOTE: The EU, BT and most others define the starting point as 100Mbps+.

Gigabit Broadband
Services that can supply headline download speeds of up to or beyond 1Gbps (Gigabits per second) or 1000Mbps+ (Megabits per second) if you prefer. Usually supplied via "full fibre" (FTTP) networks but DOCSIS 3.1 (cable) can also deliver it and so can future 5G mobile connections.

As of June 2025 around 99.3% of the country could access a "decent broadband" (10Mbps+) connection and 98.32% can recieve a "superfast" connection (30Mbps+), while "gigabit-capable" (1Gbps+) networks are on 87.84% and pure "full fibre" networks are a little behind on 78.06%.

Fixed Broadband Network Availability H1 - 2025

NOTE 1: It's very important to remember that Government / political coverage targets, like the previous "85%" for gigabit by 2025, reflect a national average, which can of course be better or worse for some areas (e.g. some counties may achieve higher coverage, while others could be well below that).

NOTE 2: The 10Mbps USO figure above looks at fixed broadband services, but doesn't factor the impact of 4G or 5G based mobile broadband, if that were included then the gap left to fill would be much smaller (example).

We should add that Openreach's (BT) open fixed line telecoms network, which is used by most of the main ISPs, except Virgin Media and many smaller alternative network providers, dominates most of country's national infrastructure and reaches nearly 100% of the population (with ADSL and FTTC). By comparison Virgin Media's closed cable network covers around 55-60% of the country and is primarily focused on urban areas, but they are expanding this via Nexfibre.

Meanwhile Satellite services can reach close to 100% of the population but they are costly and quite restrictive, although SpaceX's Starlink platform is a big improvement. By contrast there are a number of fixed wireless networks (FWA) too, but these are predominantly niche and only cover specific areas. Finally, 4G based Mobile Broadband services are available to most people and can be reasonably affordable (Ofcom found that between 88-89% of the UK's landmass can access a 4G network if you look across all operators).

Data Sources (Graphs and Statistics):
* Market Share by Technology (Ofcom Data Tables Q4-2024)
* Broadband Coverage (TBB H1 2025 Data)

* Superfast Broadband Coverage (TBB H1 2025 Data)
* Superfast Broadband Lines (Ofcom Data Tables Q4-2024)
* Total Broadband Lines (Ofcom Data Tables Q4-2024)
* Fixed Line Broadband Speeds (Ofcom 2023 Speeds Report)

Useful Articles:
* The UK Best Broadband ISPs for 2025
* The Definition of UK Superfast Next Generation Broadband