Complaint Letter Generator
Generate a structured formal complaint letter in seconds. Fill in the details and we will produce a letter you can send, copy, or print.
Disclaimer
About this tool — how it works
This generator takes you through three steps: choosing a sector, entering your details (name, company name, an optional reference number, the date the issue happened, a description of the problem, the outcome you want, and an optional amount claimed), and then produces a finished letter. The letter follows a fixed structure — today’s date, a formal opening, your description of the issue, a statement of what you are seeking, a request for a response within 14 days, and a warning that you will escalate if you do not get one. For five consumer sectors (banking, retail, insurance, energy, and telecoms) it also cites the Consumer Rights Act 2015, and names the ombudsman relevant to your chosen sector in the closing paragraph.
Every part of the letter comes directly from the answers you type in and the sector you pick — the tool does not check the facts you describe, does not verify the amount you claim, and does not know whether the named ombudsman is actually the right one for your specific provider. It also does not send anything on your behalf; you copy, print, or paste the text yourself.
Treat the output as a structured first draft, not a finished legal document. Review it for accuracy, add any evidence you have, and adjust the wording to fit your situation before sending it. For complex or high-value disputes, get advice from Citizens Advice or a solicitor rather than relying on the template alone.
Frequently asked questions
How does the complaint letter generator build the letter?
In three steps: you choose a sector (banking, energy, telecoms, retail, NHS, council, insurance, or other), enter your name, the company name, an optional reference number, the date the issue occurred, a description of the problem, and the outcome you want. The tool then assembles these into a formal letter with a standard structure and today’s date.
Why does the letter mention the Consumer Rights Act 2015?
The generator automatically adds a line referencing the Consumer Rights Act 2015 — which requires services to be provided with reasonable care and skill — only when you select Banking, Retail, Insurance, Energy, or Telecoms as the sector. It does not appear for NHS, council, or other complaints, where different rules apply.
Does the letter name a specific ombudsman?
Yes. Based on the sector you choose, the closing paragraph names the ombudsman you could escalate to if you do not get a satisfactory response — for example the Financial Ombudsman Service for banking or insurance, the Energy Ombudsman, or the Local Government and Social Care Ombudsman for council complaints — and gives the company 14 days to respond before escalation.
Should I send the letter exactly as generated?
No. It is a structured starting draft built only from what you typed in — check the facts, dates, and figures are accurate, add any evidence references, and adjust the tone if needed before sending. It is not legal advice, and for complex disputes you should get help from Citizens Advice or a solicitor.