How to Make an Insurance Complaint: Step-by-Step Guide

July 14, 2026 3 min read

Most insurance complaints can be resolved through a formal process. If not, the Financial Ombudsman Service can help.

Common Reasons to Complain

IssueExample
Claim rejectedInsurer says you’re not covered
Low settlementOffer is much less than expected
Delayed claimLong wait with no explanation
Poor customer serviceRude staff, long hold times
Mis-sellingPolicy sold on incorrect information
Premium increaseUnexplained large increase at renewal
Non-disclosure claimInsurer says you didn’t disclose something

Step 1: Contact Your Insurer

MethodDetails
PhoneCall the claims or complaints department
EmailFormal record of your complaint
LetterWritten evidence if needed
Online formMany insurers have a dedicated complaints form

Be clear about what went wrong and what you want (apology, payment, explanation).

Step 2: Formal Complaint

ElementWhat to Include
Policy numberIdentify your policy
What happenedClear timeline of events
Why you’re unhappySpecific reasons
What you wantApology, reinstate claim, compensation
EvidencePolicy documents, emails, photos
DeadlineGive them 8 weeks to respond

Step 3: Insurer’s Final Response

Within 8 weeks, the insurer must send a final response or explain why they need more time.

OutcomeWhat It Means
Final response letterInsurer has made a decision
You acceptComplaint resolved
You rejectEscalate to Ombudsman

Step 4: Financial Ombudsman Service

DetailInformation
WhoFinancial Ombudsman Service (FOS)
CostFree to you
Time limitWithin 6 months of final response
DecisionCan force insurer to pay up to £430,000
Websitefinancial-ombudsman.org.uk

The Ombudsman is independent and free. Their decision is binding on the insurer but not on you.

What the Ombudsman Can Do

RemedyDescription
ApologyFormal apology
Claim paidReinstate or correct the claim payment
CompensationAdditional compensation for distress
Policy correctionChange the policy terms
Up to £430,000Maximum award (including compensation)

How Long It Takes

StageTypical Time
Insurer initial response2-4 weeks
Insurer final responseUp to 8 weeks
Ombudsman investigation3-9 months

Tips for a Successful Complaint

TipWhy
Keep recordsEmails, letters, call recordings
Be persistentFollow up regularly
Know your policyRead the wording before complaining
Be reasonableUnrealistic demands weaken your case
Get professional helpCitizens Advice can assist
Use social mediaPublic complaints sometimes get faster responses

Bottom Line

If your insurer treats you unfairly, follow the formal complaints process. Start with your insurer, give them 8 weeks, then escalate to the Financial Ombudsman Service (free, up to £430K award). Keep records of everything. Most complaints are resolved without reaching the Ombudsman. Don’t accept unfair treatment — you have rights.

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This content is for educational purposes only. Not financial advice. Do your own research before investing.