Formal Complaint to Trader Letter Template & Generator
How to send a formal complaint before escalating to Trading Standards — the essentials to get right, your rights, and instant free generation.
← All Letter Templates & Generators · Consumer Rights · Last updated 18 August 2026 · Written and reviewed by Matt Thompson, founder of UK Work Rights
This is free rights guidance, not legal advice. For advice specific to your situation, see our About page or contact Citizens Advice.
If you need to send a formal complaint before escalating to Trading Standards, 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 formal complaint to trader should include, plus a free tool to generate yours.
What this letter needs to cover
- Identify the goods or service
- Purchase date
- Price and reference number
- Describe the issue in detail with dates
- Reference the Consumer Rights Act 2015 requirements for satisfactory quality and reasonable care and skill
- Set out the remedy sought (refund
- Repair
- Replacement or compensation)
- Give 14 days to respond
- Warn of next steps including small claims court or trading standards
Why a formal complaint letter matters before Trading Standards
Trading Standards generally expect you to have given the trader a genuine opportunity to resolve the issue directly before they get involved — a clear, formal written complaint creates exactly that record. It also strengthens any later claim, since it shows a reasonable, documented attempt at resolution rather than an immediate escalation.
What to include before you send it
- What you bought, when, and from where, with any order or reference numbers
- A clear, factual description of the problem
- What outcome you're seeking — repair, replacement, refund, or compensation
- A reasonable deadline for a response, typically 14 days
Know which consumer right applies to your situation
Under the Consumer Rights Act 2015, goods must be of satisfactory quality, fit for purpose, and as described. Within the first 30 days, you're generally entitled to a full refund for faulty goods. After 30 days but within 6 months, the trader normally gets one opportunity to repair or replace before you're entitled to a refund or price reduction. Being specific about which stage applies to you strengthens your position considerably.
Frequently Asked Questions
What if the trader ignores my letter completely?
After a reasonable deadline has passed with no response, you can escalate to Trading Standards, or pursue the matter through the small claims court for lower-value disputes.
Does it matter if I paid by card or cash?
Your consumer rights against the retailer apply regardless of payment method, though paying by credit card can give you additional protection under Section 75 for purchases between £100 and £30,000.
Ready to write yours?
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