Insurance Dispute Letter: Free Template and What to Include

If you need to formally dispute your insurer's liability decision after a car accident, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong insurance dispute letter should include.

What this letter needs to cover

• Set out the facts of the accident clearly
• State why the liability decision is disputed and what evidence supports the writer's account
• Request a review of the decision and a written response
• Note right to escalate to the Financial Ombudsman Service
• Do NOT mention personal injury, compensation figures or injury claims

Why insurers sometimes get liability wrong

Insurers assess liability based on the evidence available to them at the time, which isn't always complete — witness statements, dashcam footage, or police reports sometimes arrive after an initial decision has already been made. A formal written dispute, especially one that references specific evidence the insurer may not have properly considered, can prompt a genuine reassessment.

What to include before you send it

• The claim reference number and the specific liability decision you're disputing
• Any evidence that supports your version of events — dashcam footage, witness details, photos, or the police report
• A clear, factual account of what you believe happened, focused on the specific point of disagreement
• A request for the decision to be reviewed and a reasonable deadline for a response

What to do if the dispute doesn't resolve things

If your insurer maintains their position and you remain unsatisfied, you can escalate the complaint through their formal internal complaints process, and ultimately to the Financial Ombudsman Service if it remains unresolved after that. Keep a clear timeline and copies of all correspondence throughout.

Frequently Asked Questions

Does this affect my no-claims discount while it's being disputed?
This can vary between insurers and depends on how liability is eventually determined, so it's worth asking your insurer directly how the dispute affects your policy in the meantime.

How long does an insurer have to respond to a dispute?
Insurers are expected to handle complaints within reasonable timescales set out in FCA rules, and must issue a final response or explain any delay within set timeframes — ask your insurer for their specific complaints timescale if it isn't stated already.

[Your Name]
[Your Address]
[Your Postcode]
[Your Phone Number]
[Your Email Address]
[Name of Insurance Company Claims Manager or Complaints Department]
[Insurance Company Name]
[Insurance Company Address]
[Insurance Company Postcode]
[Date]

Dear [Name of Contact, or "Customer Services Manager"],

Subject: Formal Dispute Regarding Claim Reference: [Claim Number]

I am writing to formally dispute your decision on my motor insurance claim following the road traffic accident on [Date of Accident, e.g. 12 September 2026] at [Location of Accident].

Your letter dated [Date of Letter] states that [briefly state their decision, e.g. you are holding me 50% at fault / you have rejected my claim for vehicle repairs]. I disagree with this decision because [clearly state why, e.g. the third-party vehicle pulled out of a side road directly into my path, leaving me no time to react].

To support my position, I have enclosed the following evidence:
• [e.g. Dashcam footage showing the incident]
• [e.g. Photographs of the road layout and vehicle damage]
• [e.g. The police reference number: [number]]
• [e.g. Contact details of two independent witnesses]

Please review this evidence and reconsider your decision. Under the Financial Conduct Authority (FCA) rules, you must handle claims fairly and promptly. If this is not resolved within 8 weeks, or I am unhappy with your final response, I may refer the matter to the Financial Ombudsman Service.

I look forward to hearing from you within 14 days.

Yours sincerely,

[Your Signature]
[Your Printed Name]