British Gas Bill Dispute: What to Check Before You Complain
This supplier-specific page is for users who already know the supplier and the billing problem. It is not affiliated with British Gas; it simply points you to the right checks and complaint wording.
Use together
Start with the issue, not the brand
The same billing rules usually apply across suppliers. What changes is the account history, evidence and contact path. Keep your complaint factual and narrow.
British Gas Bill Dispute: checks to make
Find the bill or payment change
Save the full bill, email or payment notice.
Identify the exact billing issue
Reading, rate, balance, direct debit, back bill or complaint handling.
Attach evidence
Meter photo, account balance, forecast, bill PDF or supplier messages.
Ask for one remedy
Corrected bill, refund, balance correction, direct debit review or written explanation.
British Gas complaint wording starter
Account number: [account number]
I am writing about [one specific issue] on my account.
The evidence I am relying on is: [bill / reading / balance / forecast / supplier message].
Please review this issue and provide: [corrected bill / breakdown / refund / direct debit review / written explanation].
If you reject the request, please explain your reasoning in writing and confirm the complaint reference.
The rules are the same for every supplier
This is worth saying before anything else, because people assume their supplier is uniquely difficult and it changes how they complain. Every licensed supplier in Great Britain operates under the same Ofgem standard licence conditions. That means, whoever you are with:
- The 12-month back-billing rule applies, under condition 21BA.
- Fixed direct debits must be set on the best and most current information available.
- A credit balance must be refunded on request unless it is fair and reasonable not to.
- There must be a published complaints procedure and a final-response route.
- After eight weeks, or on a deadlock letter, the Energy Ombudsman can take the case — free, and binding on the supplier.
What differs between suppliers is the contact route, how quickly they respond, and how much of the process is automated. None of that changes what you are entitled to ask for, and none of it changes the eight-week clock.
What is different about British Gas in practice
British Gas is the largest domestic supplier in Great Britain, which has one practical consequence for you: complaints are handled at scale, by process. That cuts both ways. A vague complaint gets a template reply faster than anywhere else. A specific, numbered complaint with a named remedy gets routed to someone who can act on it, also faster than anywhere else.
Scale also means your account may have moved between billing systems over the years, and long-standing accounts sometimes carry balances forward without a clear audit trail. If your dispute involves an amount carried over from an earlier period, ask for a statement of account covering the full period rather than just the current bill — the carried-forward figure is often where the actual problem is.
Narrowing a general bill dispute
“My bill is wrong” gets a general answer. Work out which of these it is first — each one has a different remedy and a different piece of evidence.
| The problem is | Evidence that settles it | Page |
|---|---|---|
| The reading | A dated meter photo | Wrong reading |
| An estimate | Your submission confirmations | Estimated vs actual |
| The rate or standing charge | The detailed charges page of the bill | Rates by region |
| The days billed | Your last four bills, dates lined up | Standing charges |
| Old charges carried over | A breakdown by supply period | Back billing |
| The monthly payment, not the bill | The forecast in kWh and your balance | Direct debit |
Once you can name it in one sentence with a number in it, use the complaint template. That is the whole difference between a complaint that moves and one that gets a template reply.
The message to send
Copy, fill in the brackets, send through the supplier's published complaints route
Send it to the complaints address published in the supplier's complaints procedure, not to general customer service. Use the word “complaint” and ask for the reference in your first message — that is what starts the eight-week clock.
Escalating with any supplier
| Stage | What to do | Why it matters |
|---|---|---|
| 1. Find the complaints route | Every supplier must publish its complaints procedure. Search “[supplier] complaints procedure” and use the address given there, not general customer service. | General service queues do not create a complaint record. Complaint routes do. |
| 2. Use the word “complaint” | And ask for the reference number in your first message. | Without it, day 0 of the eight weeks is disputable. |
| 3. Keep it in writing | Follow any phone call with an email summarising what was agreed. | Phone notes are the supplier's record. The Ombudsman reads documents. |
| 4. Ask for a final response at week four | If nothing is moving. A deadlock letter unlocks the Ombudsman early. | Can save a month. |
| 5. Refer at week eight | To the Energy Ombudsman. Free. Binding on the supplier. | This is the point at which suppliers start moving. |
This page is not affiliated with, endorsed by or connected to any energy supplier. Supplier names are used only to describe which company the guidance relates to. Contact routes change — always use the complaints details published on the supplier's own website.
Frequently asked questions
Is BillDecoded affiliated with British Gas?
No. This page is independent and informational. It does not represent British Gas.
Should I complain to the Ombudsman first?
Usually no. Start with the supplier complaint route unless you already have a deadlock/final-position letter or the required waiting period has passed.
What if the issue is actually a meter reading problem?
Use the wrong meter reading guide and template so the supplier receives the right evidence.
How do I make a formal complaint to British Gas?
Use the complaints route published in its complaints procedure rather than general customer service, use the word “complaint”, and ask for the reference number in your first message. That reference is what fixes day 0 of the eight-week clock.
My bill carries a balance forward that I do not recognise.
Ask for a statement of account covering the whole period rather than just the current bill, showing how the opening balance was arrived at. On long-standing accounts a carried-forward figure is frequently where the real problem sits.
What if British Gas does not resolve it?
At eight weeks from your formal complaint, or immediately on a deadlock letter, refer it to the Energy Ombudsman. It is free, its decisions bind the supplier once you accept them, and it can award up to £10,000 on a domestic complaint.