Ombudsman pillar8-week ruleEvidence route

Energy Ombudsman Process in the UK

This is the hub for Ombudsman timing, investigation, decisions, finality, scope and remedies. Start here if your supplier complaint is unresolved or you have a deadlock/final-position letter.

Reviewed: 2026-05-08Focus: UK household energy billsType: Information, not legal advice

The short answer

You normally complain to your supplier first. If it is unresolved after the complaint period or you receive a deadlock/final-position letter, the Ombudsman can review eligible disputes. The strongest cases are narrow, evidence-led and clear about the remedy requested.

Choose your Ombudsman question

Can I escalate yet?

Check 8 weeks, deadlock and complaint readiness.

Deadlock letterTiming

What evidence matters?

Build a narrow evidence pack for the issue.

InvestigationChecklist

What happens after?

Understand outcome, review and remedy steps.

After decisionRemedy delay

Common Ombudsman paths

User problemStart withThen use
Supplier has not replied after complaintDeadlock / timing checkOmbudsman timing page
Wrong meter reading not correctedWrong reading evidenceInvestigation page
Back bill dispute unresolvedBack billing rulesComplaint template then Ombudsman
Decision received but unclear what nextAfter-decision pageFinality or disagreement page
Supplier accepted remedy but did not actRemedy follow-up pageSave proof of missing action

Frequently asked questions

When can I go to the Energy Ombudsman?

Usually after the supplier complaint period has passed or after a deadlock/final-position letter.

What does the Ombudsman need from me?

A clear issue, timeline, evidence and requested remedy.

What if I disagree with the decision?

Use the disagreement and final decision pages to separate review, rejection, finality and remedy issues.

Official sources used for this page

BillDecoded translates official process and billing information into practical checks. It is not affiliated with the Ombudsman, Ofgem, Citizens Advice, Which? or any supplier.