How to Check Broadband Speed at Your Address (2026)

To check broadband speed at your address, enter your postcode into a provider’s availability checker or use Ofcom’s coverage tool. This shows estimated download and upload speeds plus which technologies (FTTP, FTTC, cable) are available. Providers must also supply Key Facts documents showing guaranteed minimum speeds before you sign up.

Using Postcode Checkers

Every major UK broadband provider offers a free postcode checker on their website. BT’s checker shows Openreach FTTP and FTTC availability along with estimated speeds for each tier. Sky’s tool displays similar information since both use the Openreach network. Virgin Media’s checker tells you whether their cable network (HFC/DOCSIS 3.1) reaches your property, covering around 52% of UK homes. For a cross-provider view, Ofcom’s coverage checker at checker.ofcom.org.uk shows all available technologies at your postcode including FTTP, FTTC, cable and fixed wireless. Thinkbroadband’s local speed tool shows real-world speeds reported by users in your area, which is more accurate than estimated figures. Always check multiple providers because alt-net operators like Hyperoptic, Community Fibre and Gigaclear serve specific areas that mainstream checkers might not display. Your postcode could have access to networks beyond Openreach.

Understanding Estimated vs Actual Speeds

Providers advertise speeds based on what at least 50% of customers achieve at peak time (8pm–10pm), as required by Ofcom’s advertising code since 2019. This means the headline speed is a median, not a maximum. Your actual speed depends on factors including distance from the exchange or cabinet for FTTC connections, internal wiring quality, Wi-Fi interference and how many devices are connected. FTTP speeds are more predictable because there is no copper segment — a BT Full Fibre 300 customer typically gets 280–310 Mbps. FTTC speeds vary more widely; a Vodafone Superfast 2 plan advertised at 63 Mbps might deliver 40–70 Mbps depending on your line length. Run a wired speed test using Ookla Speedtest or Fast.com to see your actual throughput, and test at different times of day to understand peak versus off-peak performance at your specific address.

Key Facts Speed Guarantees

Since March 2022, all UK broadband providers must give you a Key Facts document before you sign a contract. This includes a guaranteed minimum download speed specific to your line. If your speed consistently falls below this minimum after 30 days, you have the right to exit your contract without paying early termination fees. Sky guarantees a minimum of 55 Mbps on its Superfast plan (advertised at 59 Mbps average). BT Superfast guarantees 35 Mbps on its 67 Mbps average plan. Virgin Media provides line-specific minimums that depend on your local network configuration. To trigger the speed guarantee, report persistent slow speeds to your provider. They have 30 days to resolve the issue. If they cannot bring your speed up to the guaranteed minimum, you can leave penalty-free. Keep records of your speed tests as evidence - at least three tests over separate days at different times.

What to Do If Your Speed Is Lower

If your speed test results consistently fall below your provider’s Key Facts minimum, start by troubleshooting at home. Connect via Ethernet to rule out Wi-Fi issues, restart your router and check for firmware updates. BT’s Smart Hub and Sky’s Q Hub both have diagnostic tools in their apps. If speeds remain low, report the issue to your provider — they must investigate within 14 days. Under Ofcom’s Voluntary Code of Practice on broadband speeds, providers should offer solutions like a router upgrade, engineer visit or reduced bill. If the problem persists beyond 30 days with no resolution, you can leave without early termination charges. The automatic compensation scheme means you may also be owed £6.10 per day if a fault takes more than two working days to fix. If your provider will not resolve the issue, escalate to their complaints team and then to Ombudsman Services or CISAS after eight weeks.

Compare Broadband Deals at Your Address

Enter your postcode to see which providers and speeds are available at your home. Compare deals, speeds and prices to find the best broadband for your address.

Frequently Asked Questions

How do I check broadband speed at my address?

Enter your postcode into a provider’s availability checker or use Ofcom’s coverage tool at checker.ofcom.org.uk. This shows which technologies and speeds are available. For real-world speed data from nearby users, try Thinkbroadband’s local speed tool.

What is a Key Facts speed guarantee?

A Key Facts document is a legally required summary showing your guaranteed minimum speed before you sign a contract. If your actual speed consistently falls below this minimum after 30 days and your provider cannot fix it, you can leave your contract penalty-free.

Why is my broadband slower than advertised?

Advertised speeds represent what 50% of customers achieve at peak time. Your speed may be lower due to distance from the cabinet (FTTC), Wi-Fi interference, old internal wiring or the number of devices connected. Test on a wired Ethernet connection for the most accurate reading.

Can I leave my contract if speed is too low?

Yes. If your speed consistently falls below the guaranteed minimum in your Key Facts document and your provider cannot resolve the issue within 30 days, you have the right to exit your contract without paying early termination fees under Ofcom rules.

Related Guides

Broadband Speed Test Guide · Average Broadband Speed in the UK · What Is FTTP Broadband? · Why Is My Broadband Slow?

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.