Check a billCheck the bill first. Challenge it with evidence second.
BillDecoded is a utility-led dispute-prep site for UK energy bills: calculate the numbers, identify the issue, gather evidence and send a clearer written request.
Start with the problem
Direct debit jumped
Check whether the monthly amount looks reasonable before accepting or disputing it.
Direct debit calculatorChallenge wordingWrong meter reading
Use photos, serial numbers and reading dates to ask for a corrected rebill.
Reading guideTemplateBack bill or old charges
Separate back billing from catch-up bills before complaining.
RulesComparisonRates and bill maths
Use the correct unit rate, standing charge, region and payment method.
Rate referencekWh calculatorSupplier-specific issue
Use supplier pilots only after choosing the right issue type.
British GasOctopusHow BillDecoded works
| Step | Goal | Useful page |
|---|---|---|
| 1. Diagnose | Identify the exact problem, not just “bill too high”. | /articles/ |
| 2. Calculate | Sense-check the number against readings, rates or forecast. | /calculator/ |
| 3. Gather evidence | Build a bill, reading and message timeline. | /checklist/ |
| 4. Send wording | Ask for a specific correction in writing. | /energy-bill-complaint-letter-template-uk/ |
| 5. Escalate cleanly | Use Ombudsman pages only when the supplier route is ready. | /energy-ombudsman-process-uk/ |
Evidence-led
Pages push users toward bill PDFs, meter photos, account balance data and written supplier responses.
Source-aware
Guides point back to official sources such as Ofgem, Energy Ombudsman and Citizens Advice where relevant.
Independent
BillDecoded is not affiliated with suppliers, the Ombudsman or regulators. It is informational, not legal advice.
Frequently asked questions
What should I check first on a high energy bill?
Start with readings, bill period, unit rate, standing charge and whether the bill is estimated or actual.
Can BillDecoded contact my supplier?
No. BillDecoded helps you prepare checks, calculations and wording. You send the complaint yourself.
Is this legal advice?
No. It is informational guidance for UK household energy bill checks and complaint prep.