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speed test
A BT broadband speed test shows whether you get the speed you pay for: BT sells 7 speeds, from 36 Mbps to 900 Mbps, checked 28 October 2026. If a wired result stays below BT's guaranteed minimum and isn't fixed within 30 days, you can leave without an exit fee.
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BT publishes a guaranteed minimum speed for every package. If your line is below it, you're entitled to an investigation and a way out of your contract if BT can't fix it. We'll measure your line, compare it to what BT promised and tell you what to do next.
What speed should your BT line show?
BT sells 7 speeds today, from 36 Mbps to 900 Mbps. Of those, 4 are full fibre, with fibre all the way into your home and 3 are on copper for the last stretch, up to 74 Mbps.
| Package | Line | Download | Upload | Advertised from | Over 2 years |
|---|---|---|---|---|---|
| Fibre Essential | Part fibre | 36 Mbps | 9 Mbps | £24.99/mo | £29.32/mo |
| Fibre 1 | Part fibre | 50 Mbps | 9 Mbps | £24.99/mo | £29.32/mo |
| Fibre 2 | Part fibre | 74 Mbps | 18 Mbps | £24.99/mo | £29.32/mo |
| Full Fibre 150 | Full fibre | 150 Mbps | 27 Mbps | £23.99/mo | £28.32/mo |
| Full Fibre 300 | Full fibre | 300 Mbps | 27 Mbps | £25.99/mo | £30.32/mo |
| Full Fibre 500 | Full fibre | 500 Mbps | 49 Mbps | £27.99/mo | £32.32/mo |
| Full Fibre 900 | Full fibre | 900 Mbps | 110 Mbps | £32.99/mo | £37.32/mo |
"Over 2 years" is the average monthly cost across 24 months once any intro offer ends and the rises written into the contract apply. Part fibre runs fibre to the street cabinet and copper to your home. From BT's live deals, updated every day.
Getting a fair result
Run the test on a laptop plugged into the router with a cable. Over wifi you'll often see less than the line is giving you.
Every BT package goes up £4 a month in March 2027 and again in March 2028, so the starting price isn't what you'll pay for the whole contract.
If it’s still slow
BT has signed Ofcom's broadband speed code. That means BT gave you a minimum guaranteed speed when you joined. If your wired speed stays below it and BT can't fix it within 30 days, you can leave without an exit fee.
BT sells over Openreach's network, so if the line itself needs an engineer, BT books an Openreach one for you. Source
Questions
BT speed questions
What speed should I get on BT?
BT sells 7 speeds today, from 36 Mbps to 900 Mbps. Of those, 4 are full fibre, with fibre all the way into your home and 3 are on copper for the last stretch, up to 74 Mbps. Check which package you're on, then compare it with a wired test. The table on this page shows the speed each package is sold at.
Why is my BT broadband slow?
Run the test on a laptop plugged into the router with a cable. Over wifi you'll often see less than the line is giving you. If the wired result is fine, the line is doing its job and the slowdown is in your home: the router's position, other devices or an old wifi standard. If the wired result is low too, switch the router off at the wall for 30 seconds, test again, then report it.
What can I do if BT can't fix my speed?
BT has signed Ofcom's broadband speed code. That means BT gave you a minimum guaranteed speed when you joined. If your wired speed stays below it and BT can't fix it within 30 days, you can leave without an exit fee. BT sells over Openreach's network, so if the line itself needs an engineer, BT books an Openreach one for you.
Will my BT price go up?
Every BT package goes up £4 a month in March 2027 and again in March 2028, so the starting price isn't what you'll pay for the whole contract.
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