British Gas Complaints Customer Service Guide

British Gas complaints customer service starts with the supplier’s own team, and if your problem is not fixed within eight weeks you can escalate free to the Energy Ombudsman, whose decision is legally binding. British Gas scored 2.61 out of 5 in the Citizens Advice supplier star rating for January to March 2026, the lowest of the largest suppliers, so knowing the correct route and keeping a written record matters.

Most complaints are billing, smart meter or account issues that can be logged by phone, in writing or online. This page explains how to make a formal complaint, how long British Gas has to respond, when and how to go to the Energy Ombudsman, and what compensation you can claim under Ofgem’s Guaranteed Standards. Free Price Compare sources this information from Ofgem, Citizens Advice and the Energy Ombudsman.

Last updated: August 2026

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

How do I make a formal complaint to British Gas?

Making a formal complaint to British Gas means putting your problem in writing and asking for it to be logged as an official complaint, rather than a general query, so it enters the supplier’s complaints process with a reference number. You can complain by phone, through the online help and support pages, via live chat, or by post to the Complaints Management Team, PO Box 226, Rotherham, S98 1PB. Always state clearly that you are raising a formal complaint, describe what went wrong, say what outcome you want, and ask for a written acknowledgement. A dated paper trail is the single most useful thing you can build, because the Energy Ombudsman decides cases on documented evidence.

Under Ofgem’s complaint-handling standards, every energy supplier must have a published complaints procedure and must record complaints from the point you raise them. Ask for your complaint reference at the first contact and quote it every time afterwards.

• Put the complaint in writing where you can, so there is a timestamped record.
• State the facts, the dates, and the resolution you are asking for.
• Request a written acknowledgement and a complaint reference number.
• Keep copies of every bill, email, letter and chat transcript.

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What is the British Gas complaints phone number?

The British Gas complaints phone number for energy accounts is the customer service line published on the British Gas contact and complaints pages, which is open long hours including weekends. Phone numbers change from time to time, so check the current number directly on the British Gas website before you call, and note the exact number you used along with the date and time. When you get through, ask the adviser to log the call as a formal complaint and to give you a reference number. Note the adviser’s name and confirm what they have agreed to do and by when.

Phone contact is fastest for urgent issues such as a loss of supply, a suspected gas leak or a vulnerable household with no heating. For anything involving money, billing disputes or a broken promise, follow up the call in writing so there is a record the Energy Ombudsman can later review.

Is there a British Gas complaints email address?

British Gas handles most written complaints through its online help and support forms and live chat rather than a single public complaints inbox, and email addresses circulated on forums are not always current. The reliable written routes are the online complaint form, live chat and postal address published on the British Gas site, all of which create a documented record. If you are given a specific email address by a British Gas adviser during your complaint, use that and keep copies of everything you send and receive.

Whichever written channel you use, the key is evidence. Ask for written confirmation of what has been agreed, keep the thread intact, and never rely on a verbal promise made only over the phone. If you are unsure your complaint has been logged, the free Citizens Advice consumer service can advise you on the correct process.

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How long does British Gas take to resolve a complaint?

British Gas, like every energy supplier, has up to eight weeks to resolve your complaint under Ofgem’s rules before you gain the right to escalate to the Energy Ombudsman. Many complaints are settled far sooner, but the eight-week point is the legal trigger: if the complaint is still open, or you receive a “deadlock” letter saying British Gas can do no more, you can take it to the Ombudsman for free. According to Ofgem, suppliers and network operators must try to fix any problem you have reported within eight weeks.

British Gas reported a high volume of complaints in the first quarter of 2026, according to its own published performance data. Complaint volumes on that scale mean it pays to keep chasing with your reference number and to note every date, because the eight-week clock starts from when you first raised the issue.

How do I escalate to the Energy Ombudsman?

Escalating to the Energy Ombudsman is free, and you can do it once your complaint has gone unresolved for eight weeks or you have received a deadlock letter from British Gas. The Energy Ombudsman is an independent, impartial service that reviews the evidence from both sides and issues a decision that British Gas must legally comply with. To escalate, contact the Energy Ombudsman directly, supply your complaint reference, a clear timeline, and copies of your evidence, and explain the outcome you want. Redress can include fixing the problem, a written explanation or a payment.

British Gas received 7,474 Ombudsman complaints in the first quarter of 2026, 637 more than the previous quarter, according to its published performance report. Industry-wide, complaints escalated to the Energy Ombudsman fell 14% to 80,256 in 2025, according to Energy Ombudsman annual data. If you are vulnerable or need extra help, the Extra Help Unit can support your case. Our energy supplier complaints guide for E.ON Next follows the same escalation route, since these Ofgem rules apply to every supplier.

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Can I get compensation from British Gas for poor service?

Compensation from British Gas is available in two main ways: fixed automatic payments under Ofgem’s Guaranteed Standards of Service, and discretionary redress ordered by the Energy Ombudsman for wider poor service. Guaranteed Standards cover specific failures such as missing a booked appointment, being slow to reconnect a supply or failing to action a request on time, and pay a set amount per failure. Check the current Guaranteed Standards amounts on the Ofgem website, as the figures are reviewed periodically.

For broader problems, such as months of inaccurate billing, repeated errors or distress caused by poor handling, the Energy Ombudsman can order British Gas to pay compensation on top of fixing the issue. To claim, document the impact: dates of missed appointments, time spent chasing, and any financial loss. If a British Gas engineer misses an appointment, ask specifically whether a Guaranteed Standards payment is due. Where poor service is driven by a billing dispute, you can also read our gas and electricity billing FAQs for how estimated and catch-up bills work.

How does British Gas customer service compare with other suppliers?

British Gas customer service ranked below the industry median in early 2026, scoring 2.61 out of 5 in the Citizens Advice supplier star rating for January to March 2026, against a median of 3.26 for that quarter, according to Citizens Advice published in June 2026. The rating measures accurate and regular billing, working smart meters, call wait times and effective, timely handling of complaints, including those escalated to Citizens Advice, the Extra Help Unit and the Energy Ombudsman. Among the largest suppliers, E.ON Next, Octopus Energy and Ovo Energy performed better than British Gas in that quarter.

A below-median score does not mean every household has a bad experience, but it does mean service is a fair reason to look at your options. Comparing suppliers on service and price together is straightforward with a whole-of-market comparison, and if you decide to move, check for any exit fees first using our British Gas exit fees and switching guide. You can also weigh service and cost side by side in our British Gas versus E.ON Next comparison.

Will switching supplier fix a service problem or cut my bill?

Switching supplier will not resolve an existing complaint or refund a debt already in dispute, but it can move you to a supplier with a better service record and often a cheaper tariff. Any open complaint stays with British Gas and, if unresolved, can still go to the Energy Ombudsman even after you have switched, so keep your evidence. From 1 July to 30 September 2026, the Ofgem price cap rose by 13% to around £1,862 a year for a typical direct debit household at the 2023 benchmark, announced on 27 May 2026. The cap limits unit rates and the standing charge for typical use, not your total bill, which varies with how much energy you use.

A fixed tariff can shield you from cap movements, and around 40% of accounts (about 22 million) were on fixed deals and unaffected by the July increase, according to Ofgem. If you are on a standard variable tariff and want more certainty, compare fixed deals before you commit, and check whether support such as the Warm Home Discount applies to your household.

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• E.ON Next Complaints: Customer Service & Resolution Guide
• British Gas Exit Fees & Switching Guide: Avoid Extra Charges
• British Gas vs EDF Energy – Who Is Better?
• British Gas vs OVO Energy Which Supplier Is Better?
• British Gas Energy Tariffs 2025: Best Fixed & Variable Deals

Information correct as of 7 August 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).