How to Complain About Your Broadband Provider

To complain about your broadband provider, raise the issue with the provider first, give them a fair chance to fix it, and if it stays unresolved after six weeks (or you receive a deadlock letter), take it free of charge to an independent Alternative Dispute Resolution (ADR) scheme. As of 8 April 2026, Ofcom cut the wait before you can escalate from eight weeks to six, so you can now reach an ombudsman sooner.

Most broadband faults, billing errors and slow speeds are resolved by the provider once a formal complaint is logged. When they are not, you have a clear legal route, and in some cases automatic compensation that the provider must pay without you having to ask.

• Step 1: complain formally to your provider and note the complaint reference.
• Step 2: if it is unresolved after six weeks, or you get a deadlock letter sooner, escalate free to the Communications Ombudsman or CISAS.
• Step 3: claim automatic compensation for total loss of service, missed appointments or delayed activation where your provider is signed up to the scheme.

Last updated: June 2026

Written by the Free Price Compare editorial team | Reviewed June 2026

What is the broadband complaint route, step by step?

The complaint route for broadband starts with your provider and ends, if needed, with a free independent adjudicator. Every UK provider serving households and small businesses must run a complaints procedure that meets Ofcom’s minimum standards and must belong to one of two approved ADR schemes. According to Ofcom, a provider’s complaints code of practice must give you a phone number, a postal address and an email address or webform for making a complaint.

Work through these stages in order, keeping a written record at each one:

• Contact customer services first. Explain the problem clearly, with dates, speed tests or screenshots, and ask what they will do and by when.
• Make a formal complaint. If the first contact does not fix it, ask to log a formal complaint and request a complaint reference number. Details are on the back of your bill or on the provider’s website.
• Ask for a deadlock letter if you are stuck. A deadlock letter (also called a final response) lets you go straight to ADR without waiting.
• Escalate to an ADR scheme. If six weeks pass from your formal complaint with no resolution, you can register the dispute with the relevant ombudsman free of charge.

Always note the date you first complained and the reference number. The six-week clock runs from the date you first formally notified the provider, so that date matters if you later escalate. [STAT NEEDED: Ofcom, Ofgem, ABI, FCA or ONS]

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What changed in April 2026: the new 6-week ADR rule

The April 2026 change means you can take an unresolved broadband complaint to an independent ADR scheme after six weeks, reduced from the previous eight-week wait, from 8 April 2026. Ofcom confirmed the change following its review of ADR in the telecoms sector, stating the shorter timeframe helps consumers get complaints resolved more quickly. The rule covers residential customers, small businesses and small not-for-profits.

The new six-week window applies to complaints first raised on or after 8 April 2026. If you complained before that date, the old eight-week wait still applies unless your provider issues a deadlock letter. Because the earliest a six-week wait can complete is six weeks after 8 April 2026, the first practical date a customer could escalate under the new rule, without a deadlock letter, is 20 May 2026.

Many older online guides still quote the eight-week figure. The current rule is six weeks, and a deadlock letter still lets you escalate immediately regardless of how long has passed.

What is a deadlock letter and how do you get one?

A deadlock letter is a written statement from your provider confirming it cannot resolve your complaint, which lets you take the dispute to an ADR scheme straight away without waiting the six weeks. It is sometimes called a final response. The deadlock letter is your shortcut past the waiting period.

You request one by telling your provider, in writing, that you want a deadlock letter so you can escalate to the ombudsman. Providers must issue one when a complaint reaches an impasse. If they refuse or delay, you can still escalate once the six-week period has passed from your original formal complaint, so you are not blocked either way. [STAT NEEDED: Ofcom, Ofgem, ABI, FCA or ONS]

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Which ADR scheme does your provider use?

Ofcom approves two ADR schemes for telecoms: the Communications Ombudsman and the Communication and Internet Services Adjudication Scheme (CISAS). Both are independent, both are free to use, and every broadband provider must belong to one of them. ADR schemes make an impartial assessment of the dispute based on evidence from you and the provider, then reach a binding decision.

Your provider must tell you which scheme it belongs to, and you can also check using Ofcom’s ADR checker. The Communications Ombudsman, now part of the Trust Alliance Group, has resolved over 1.3 million disputes with more than 1,000 telecoms providers signed up, according to the scheme. You do not pay anything to use either body, and you do not need a solicitor.

To complain about a specific provider such as Virgin Media, Sky, BT or TalkTalk, check which of the two schemes that provider belongs to, then register your dispute with that scheme once you are eligible.

Can you claim compensation for outages and missed appointments?

Yes. Ofcom’s Automatic Compensation Scheme pays fixed daily amounts for total loss of service, missed engineer appointments and delayed activation, and the provider must pay it as a bill credit without you having to ask, if your provider is signed up. The rates rise each year on 1 April in line with CPI from the previous 31 October.

Figures are indicative and may change.

The scheme covers all residential fixed broadband and landline products with providers that have signed up. Ofcom estimates the scheme covers around 91% of broadband customers, through providers including BT, EE, Plusnet, Sky, NOW, TalkTalk, Virgin Media, Vodafone, Utility Warehouse, Hyperoptic and Zen. Check the latest Ofcom list before relying on cover, as the scheme is voluntary.

You will not receive compensation where the fault is caused by your own equipment or activity inside your home, where you breach your contract or cause the failure, or where you prevent it being fixed (for example by asking for a later appointment). No payment is due for a missed appointment if the provider gave at least 24 hours’ notice of the change. If your broadband and landline lose service at the same time, you get one payment, not two.

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How do you complain about slow broadband speeds?

Slow broadband is a valid complaint when your provider consistently delivers below the minimum guaranteed speed it gave you at sign-up. Under Ofcom’s voluntary code of practice, signed-up providers must give you a minimum guaranteed download speed when you order, and if your actual speed falls below it and they cannot fix it within around 30 days, you have the right to leave without an exit fee.

Before you complain, run wired speed tests at different times directly from your router, not over Wi-Fi, and keep a record. Wi-Fi distance, old routers and household congestion can all reduce speeds, so testing on a cabled connection shows whether the fault is the line or your home setup. If the line is underperforming against the guaranteed figure, raise a formal complaint and quote the minimum speed in your contract. Our guide on when you can complain about broadband speed sets out the thresholds in detail.

It also helps to know what realistic speeds your package should deliver, so you can judge whether the line is underperforming.

What does Ofcom do and not do?

Ofcom regulates the telecoms market and logs complaints to spot patterns, but it does not resolve individual broadband disputes. Parliament has not given Ofcom the power to settle one customer’s complaint, so it points you towards the ADR schemes for that. Reporting your problem to Ofcom still matters, because the regulator may investigate a provider if its monitoring data reveals a wider issue.

Ofcom publishes quarterly complaint figures per 100,000 customers. For Q4 2025, published in 2026, the broadband industry average was around 7 complaints per 100,000, with the most complained-about providers above that average and the least complained-about around 5 per 100,000. If you want to gauge a provider before signing up, these figures and our guide on assessing broadband providers are a sensible starting point.

You can reach Ofcom’s Consumer Contact Team on 0300 123 3333. If you need free, independent advice on your rights at any stage, Citizens Advice can also help.

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Can a provider block you from switching over arrears?

One Touch Switch is the system under which you arrange a broadband move with your new provider only, and they handle ending the old contract for you. A provider should not be able to indefinitely block a switch, but unpaid bills or genuine account arrears can cause complications and may need settling first. [STAT NEEDED: Ofcom, Ofgem, ABI, FCA or ONS]

If you believe a provider is wrongly preventing you from leaving, raise it as a formal complaint and ask for a deadlock letter, then escalate to ADR if it is not resolved. Where the dispute is over arrears or a charge you believe is wrong, set out clearly in writing what you dispute and why, and keep all correspondence. Switching during an active dispute is harder, so it is worth resolving the complaint and any outstanding balance in parallel rather than assuming a move will clear it.

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• Assessing Broadband Providers: Choosing the Best

Information correct as of 28 June 2026. Prices, tariffs, policy details and providers change frequently, so please check the latest details before making a decision. This article is for general information only and does not constitute financial advice. Free Price Compare is authorised and regulated by the Financial Conduct Authority (FCA).