What Is FTTC Broadband? Fibre to the Cabinet Explained (2026)

FTTC stands for fibre to the cabinet. Fibre optic cable runs from the exchange to your local green street cabinet, but the final connection to your home uses existing copper telephone wire. This limits speeds to around 80 Mbps download and 20 Mbps upload. FTTC remains widely available across 96% of UK premises through the Openreach network.

How FTTC Broadband Works

FTTC broadband splits the connection into two parts. High-speed fibre optic cable carries data from the telephone exchange to a green street cabinet, typically located within a few hundred metres of your home. From the cabinet, the existing copper telephone line completes the journey to your property. This copper section is the bottleneck, as signal quality degrades over distance. Homes within 200 metres of the cabinet may achieve close to the maximum 80 Mbps download speed, while those 1.5 km away may see speeds drop below 30 Mbps. Openreach upgraded the majority of its cabinets under the BDUK programme, and FTTC is now available to around 96% of UK premises. BT sells FTTC as its Superfast Fibre package, typically advertising average speeds of 36 Mbps or 67 Mbps depending on the tier. Upload speeds cap at 20 Mbps on the fastest FTTC plans, which can be limiting for video conferencing and large file uploads.

FTTC Speeds and Performance

The maximum theoretical download speed on FTTC is 80 Mbps using VDSL2 technology, though actual performance depends heavily on line length and quality. Ofcom's 2025 UK Home Broadband Performance report found the average FTTC download speed was 50.4 Mbps during peak evening hours. Sky Broadband offers its Superfast package with average speeds of 59 Mbps on FTTC, while Plusnet advertises 66 Mbps average on its Fast plan. For households with moderate internet use, streaming one or two 4K devices requires around 50 Mbps, putting FTTC within comfortable range. However, homes with five or more active users during peak times may notice slowdowns. Latency on FTTC typically ranges from 12 to 20 ms, which is acceptable for online gaming. The key limitation is upload speed, which caps at 20 Mbps, making FTTC less suitable for content creators, remote workers uploading large files, or households running cloud backup services.

FTTC Availability and Providers

FTTC is the most widely available superfast broadband technology in the UK, covering approximately 96% of premises through the Openreach network. Most major providers resell Openreach FTTC, including TalkTalk, which offers budget FTTC packages from around £24 per month with average speeds of 67 Mbps. EE bundles FTTC broadband with mobile data backup, automatically switching to 4G if the fixed line drops out. Vodafone provides FTTC plans from approximately £25 per month with a price-lock guarantee, meaning no mid-contract price rises during the 24-month term. In areas served by KCOM in Hull, FTTC is delivered over their own independent network rather than Openreach. While FTTC coverage is extensive, Openreach is gradually shifting investment towards FTTP, and some cabinets will eventually be decommissioned as full fibre replaces them. The PSTN switch-off in January 2027 does not immediately affect FTTC, but long-term copper retirement is planned.

Should You Upgrade from FTTC to FTTP?

If FTTP is available at your address, upgrading from FTTC makes sense for most households. FTTP delivers symmetrical speeds, meaning uploads match downloads, which is a significant improvement over FTTC's 20 Mbps upload cap. Cuckoo offers straightforward FTTP packages with no mid-contract price rises from £27 per month for 36 Mbps, scaling to full gigabit. The price gap between FTTC and entry-level FTTP has narrowed considerably, often just £3–5 per month more. Shell Energy sells FTTP plans starting at 36 Mbps from approximately £25 per month, making full fibre competitive with FTTC on cost. Reliability improves substantially with FTTP, as Ofcom data confirms 12% fewer annual faults compared to copper-based services. For future-proofing, FTTP supports multi-gigabit speeds as technology evolves, while FTTC has reached its physical limit at 80 Mbps. If you work from home or have multiple users streaming simultaneously, the upgrade delivers noticeable performance gains.

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Frequently Asked Questions

Is FTTC classed as fibre broadband?

Yes. Ofcom allows providers to market FTTC as fibre broadband because the connection uses fibre optic cable for the exchange-to-cabinet section. However, it is not full fibre, as copper wire covers the final stretch to your home. Advertising rules require providers to distinguish FTTC from FTTP clearly.

Why is my FTTC speed slower than advertised?

FTTC speeds depend on the distance between your home and the street cabinet. Longer copper lines suffer more signal degradation. If your home is over 1 km from the cabinet, speeds typically drop below 40 Mbps. Internal wiring quality and electrical interference from neighbouring appliances also affect performance.

Will FTTC be switched off?

There is no fixed date to switch off FTTC nationally, but Openreach plans to retire the copper network progressively as FTTP coverage expands. The PSTN switch-off in January 2027 affects traditional phone lines but does not immediately disable FTTC broadband. Long-term, copper retirement is expected by the early 2030s.

Related Guides

What Is FTTP Broadband? · What Is ADSL Broadband? · Types of Broadband UK · Broadband Speeds Explained

Methodology & Sources

Information in this guide is sourced from Ofcom market reports, Openreach coverage data, ISPreview.co.uk, provider websites and independent broadband research from Point Topic and Thinkbroadband. Prices and availability are checked monthly. Speed data reflects advertised average speeds from provider Key Facts documents.