rights · Telecoms

When broadband speed promises are missed

Ofcom codes and contract terms shape refunds and exits for speed problems.

If your broadband speed is consistently slower than what you were promised, you may have the right to get the problem fixed or leave your contract without penalty. Ofcom's voluntary speed codes and the Consumer Rights Act give you tools to challenge your provider. This guide explains how to test, document, and escalate broadband speed complaints effectively.

What you need to know

Understanding speed estimates and guarantees

When you signed up, your provider should have given you an estimated speed range and a minimum guaranteed download speed. The estimated range is typical for your line; the minimum guaranteed speed is the floor below which the provider must take action. Check your contract or welcome pack for these figures.

Ofcom voluntary broadband speed codes

How to test properly

Wi-Fi speed tests are unreliable for complaint purposes. Always test using a wired Ethernet cable plugged directly into the router. Run tests at different times of day over several days. Use your provider's recommended speed checker or an independent one. Save screenshots of all results with timestamps.

The 30-day fix-or-exit rule

Under Ofcom's speed codes, if your speed persistently falls below the minimum guaranteed level, your provider must try to fix it within 30 days. If they cannot, you may be entitled to exit the contract without paying early termination charges. Check whether your provider has signed up to the code.

Ofcom voluntary broadband speed codes

Automatic compensation

Providers that participate in Ofcom's automatic compensation scheme must pay compensation for delayed repairs beyond 2 working days. If your speed problem requires a repair and it takes longer than 2 working days, check whether automatic compensation should have been applied to your account.

Ofcom automatic compensation scheme

Step-by-step

  1. 1

    Find your speed guarantee

    Check your contract, welcome email, or online account for the minimum guaranteed download speed and the estimated speed range you were given at sign-up.

    Tip: If you cannot find it, ask your provider to confirm in writing what speed was guaranteed.

  2. 2

    Run proper speed tests

    Connect a device directly to the router using an Ethernet cable. Run speed tests at different times over at least 3 days. Use your provider's recommended checker and an independent one. Screenshot every result.

    Tip: Test during peak hours (7-11pm) as well as off-peak to show the pattern.

  3. 3

    Log the fault with your provider

    Contact your provider with your speed test evidence. Ask them to investigate the line and raise a fault. Get a fault reference number. Note that internal wiring issues may be your responsibility — the guarantee typically applies to the connection into your home.

    Tip: Ask specifically whether the fault is with their network or your internal wiring.

  4. 4

    Give them 30 days to fix it

    Under speed codes, the provider has 30 days to resolve persistent speed faults. Keep testing during this period and save results.

    Tip: Continue documenting even after reporting — you need evidence of the ongoing failure.

  5. 5

    Request contract exit or escalate

    If speeds are still below guarantee after 30 days, request penalty-free exit from your contract citing the speed codes. If they refuse, raise a formal complaint and escalate to ADR after 8 weeks or deadlock.

    Tip: Put the exit request in writing referencing Ofcom's speed codes specifically.

Eligibility

  • Provider signed up to speed codes

    Not all providers have signed up to Ofcom's voluntary broadband speed codes. Check the Ofcom website for a list of participating providers.

  • Speed below minimum guarantee

    The guarantee refers to the minimum guaranteed download speed in your contract, not the estimated or advertised speed.

  • Tested correctly

    You must test using a wired Ethernet connection. Wi-Fi speed results are not reliable enough for complaint purposes.

Key deadlines

  • Provider must fix speed fault

    30 days · from Date fault reported (under speed codes)

  • ADR escalation

    56 days · from Date of formal complaint

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Suggestions are for guidance only. Always verify with official sources.

Frequently asked questions

Does the guarantee cover Wi-Fi speed?
No. Speed guarantees refer to the connection delivered to your router, not Wi-Fi performance. You must test with a wired Ethernet connection. Wi-Fi performance is affected by your home environment and is your responsibility.
What if I was never given a speed estimate?
Providers that have signed up to the codes must give speed estimates at sign-up. If they did not, this is itself a potential complaint. Ask for the estimate now and challenge any discrepancy.
Can I leave my contract for slow broadband?
If the speed codes apply and the fault is not fixed within 30 days, you may be able to exit without early termination charges. If the codes do not apply, you may still have grounds under the Consumer Rights Act.
What about upload speeds?
Upload speed guarantees vary by provider. Check whether your contract includes an upload speed estimate or guarantee.
Is the automatic compensation scheme mandatory?
No, it is voluntary. Check whether your provider participates on the Ofcom website.
What if the problem is intermittent?
Log the times when speed drops occur. Intermittent faults can be harder to diagnose but are still valid complaints. The more data points you have, the stronger your case.
Can I use my own router?
You have the right to use your own router under Ofcom rules. However, the provider may only guarantee speeds using their equipment. For complaint purposes, test with their router first.
What if I am on a very old broadband technology?
Copper ADSL connections naturally deliver lower speeds. The guarantee should have been appropriate for your line type. If the guaranteed speed was reasonable for ADSL but you want faster, consider upgrading to FTTC or FTTP.

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