Broadband Complaints and Ombudsman: Your UK Rights

Start a broadband complaint with the provider and state clearly that you want it logged as a formal complaint. Give the account number, what went wrong, when it happened, the evidence you hold and the remedy you want. If the dispute remains unresolved for six weeks, or the provider sends a deadlock or final-response letter sooner, take it free to the provider's Ofcom-approved alternative dispute resolution scheme.

Ofcom's ADR guidance, updated 6 August 2026, names two approved schemes: Communications Ombudsman and the Communications and Internet Services Adjudication Scheme, usually called CISAS. Your provider's membership decides which one handles the case. Ofcom regulates the sector and records reports, but it does not decide an individual claim for a refund, repair or compensation.

Broadband complaint escalation timeline

How to complain about a broadband provider

Find the complaints code on the provider's website or bill. Ofcom requires phone and broadband companies to publish an accessible code with a phone number, postal address and an email address or webform, as well as investigation steps and expected timeframes. A fault report to technical support may not start the complaint clock, so use the words formal complaint and record the date.

Describe one clear sequence rather than forwarding an unexplained bundle of messages. State the service involved, the address, the date the problem began, every failed promise or appointment, the financial effect and what would settle the matter. A useful remedy might be a corrected bill, refund, account credit, repair, penalty-free cancellation, apology or compensation for evidenced loss and inconvenience.

Build a complaint case file

• Identity: account holder's name, service address, account number and safe contact details.
• Timeline: dates and times of outages, orders, engineer visits, calls, chats and promised resolutions.
• Contract evidence: order confirmation, pre-contract information, minimum guaranteed speed, bills and cancellation terms.
• Technical evidence: router status, provider fault references and repeatable wired speed tests where speed is disputed.
• Financial evidence: incorrect charges, receipts and a calculation linking each requested refund or cost to the failure.
• Requested outcome: a specific action and amount, explaining how each part would put the problem right.

Citizens Advice recommends saving webchats and keeping letters, bills and proof of postage. Do not assume that opening a dispute makes all payments optional. Pay undisputed charges and ask the provider how it will mark the disputed amount, because late-payment or debt action can continue if the case is not upheld.

When can you contact the broadband ombudsman?

For a complaint first raised on or after 8 April 2026, the normal ADR wait is six weeks from the date the provider first received it. A deadlock letter lets you apply sooner. The previous threshold was eight weeks, so a complaint first raised before 8 April 2026 remains subject to that older transition rule unless the provider issued deadlock.

A deadlock letter, sometimes called a final response, confirms that the provider cannot agree a resolution or has no further proposal. Ask for it in writing when the provider says its offer is final. Ofcom says an ADR application must be made less than 12 months after receiving a deadlock letter, but applying promptly is safer because scheme rules, evidence retention and any separate court limitation period still matter.

CISAS or Communications Ombudsman: which scheme handles your provider?

Use only the ADR scheme to which the provider belongs. The membership below is the major-provider list published by Ofcom and verified on 23 August 2026. Smaller brands and business divisions may use a different scheme, and membership can change, so check the provider's complaints code or Ofcom's current list before applying.

Both services are independent of the provider and free for eligible residential customers. Ofcom also includes small businesses with up to 10 employees and not-for-profit organisations where up to 10 people work, excluding volunteers. Scheme scope still applies, so check eligibility if the dispute concerns data protection, personal injury, alleged crime, property damage or a provider's commercial decision not to serve an address.

What can broadband ADR do?

ADR examines the documents from both sides and can direct a provider to take practical action, correct or credit an account, refund charges, apologise or pay a financial award. Communications Ombudsman and CISAS each publish a maximum financial remedy of £10,000, but that is a ceiling rather than a typical award or promise. The result turns on the contract, law, relevant codes, evidence and what is fair in the individual case.

Ask for a remedy you can justify. Separate direct financial loss from inconvenience, show the calculation and avoid treating the scheme maximum as a target. Communications Ombudsman says the provider has 28 days to implement an accepted decision. CISAS says a provider normally has 20 working days after the customer accepts its decision. Confirm the deadline in the decision you actually receive.

You can generally reject an ADR decision and consider another route, including court, but legal costs and risk are different. If you accept, the provider is bound by the decision and you should not expect to accept only the favourable parts while challenging the award. Obtain independent legal advice before court action, especially where the claimed loss is substantial or a limitation deadline may apply.

Broadband complaint compensation is not one single scheme

Ofcom's voluntary Automatic Compensation Scheme can pay eligible residential customers of participating providers without an ADR ruling. At rates verified on 23 August 2026, delayed repair after a total loss of service earns £10.34 per qualifying calendar day, a missed appointment earns £32.31, and a delayed new-service start earns £6.46 per qualifying calendar day.

Automatic compensation has provider, event and exclusion rules. It does not replace a formal complaint where the payment is missing, the provider disputes eligibility or the loss falls outside the code. Include the expected automatic payment in the complaint, identify the qualifying dates and explain separately any further remedy requested. This prevents an ADR application from mixing a fixed code payment with an unsupported general compensation figure.

Does Ofcom deal with individual broadband complaints?

Ofcom does not resolve an individual broadband dispute or order a provider to refund one customer. It sets and enforces sector rules, approves ADR schemes and uses consumer reports to identify wider patterns. Report a regulatory concern to Ofcom where appropriate, but keep the provider complaint and ADR case moving because an Ofcom report is not a substitute for either. For the dated national picture, see our UK broadband customer satisfaction research, which keeps survey scores and complaints per 100,000 subscribers in separate columns.

Consumers needing help with rights or disputed bills can contact Citizens Advice in England and Wales, Advice Direct Scotland in Scotland, or Consumerline in Northern Ireland. If the relationship with the provider is no longer workable after the dispute is closed, check your contract and use our UK broadband switching guide. Compare services for the exact address through our broadband comparison rather than cancelling first and risking avoidable downtime or exit charges.

What to do today

1. Write down the problem, dates, evidence, financial effect and exact remedy.
2. Submit it through the provider's formal complaints route and save the reference.
3. Set a calendar reminder for six weeks from the original complaint date.
4. Request a deadlock letter sooner if the provider confirms it has no further offer.
5. Verify the provider's scheme, then submit one organised evidence file to CISAS or Communications Ombudsman.

If the dispute concerns an exit fee or a rise in the contract price, read the broadband contract end rights guide and our guide to leaving after a broadband price rise. Those pages explain the contract questions to settle before asking the provider or ADR scheme for penalty-free cancellation.