ClearComplaint
Start my letter
AI-assisted UK complaint letter builder

UK complaint letter generator

Create a structured complaint letter for a UK company. Add what happened, what evidence you have and what outcome you want, then preview the letter before unlocking the full editable version.

Start building my letter How it works

Useful for refunds, delays, billing disputes, faulty goods, poor service and ignored complaints.

Free to start Preview before payment Unlock full letter for £3.99 No subscription Edit before sending

Complaint letter builder

Build your complaint step by step

Add the company, issue, evidence and remedy. Your preview will show whether the complaint has enough detail before checkout.

Step 1 of 6

1. Who are you complaining about?

Start typing a company name and select a match if it appears. You can also use a custom company name.

How ClearComplaint helps

Create a clearer complaint letter

A strong complaint letter should make it easy for the company to understand the issue, identify your account or order, review the evidence and respond to the remedy you are asking for.

What your complaint letter should include

Your letter should explain who the complaint is about, what went wrong, when the key events happened, how you have already tried to resolve it and what you want the company to do next.

ClearComplaint turns those details into a formal structure so the complaint is less likely to read like a vague rant and more likely to look like a case the company can investigate.

What evidence should you add?

Useful evidence includes receipts, booking references, account numbers, screenshots, photographs, delivery updates, call notes, emails and any previous complaint reference. You do not need every item to start, but specific details improve the letter.

Airline complaintsFlight delays, cancellations and refund problemsView sector guide Retail complaintsFaulty goods, failed deliveries and returnsView sector guide Energy complaintsBills, meters, switching and account disputesView sector guide Complaint guidesPractical UK complaint writing guidanceBrowse guides

Questions before you start

Complaint letter generator FAQs

Is the complaint letter free to start?

Yes. You can start the builder and generate a protected preview before choosing whether to unlock the full editable letter.

Can I edit the complaint letter before sending it?

Yes. The unlocked letter is editable so you can correct details, adjust tone and add evidence or references before sending it to the company.

What should I include in a complaint letter?

Include the company name, what happened, dates, previous contact, evidence, relevant references and the outcome you want, such as refund, repair, replacement, apology or compensation.

Does ClearComplaint guarantee a response?

No. No service can guarantee a response or outcome. ClearComplaint helps you produce a clearer, better-structured complaint letter so the company can understand the issue and remedy requested.

Ready to turn the problem into a structured complaint?

Start with the company and issue. You can preview the complaint letter before paying to unlock the full editable version.

Start building my letter