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Statutory demand vs letter before action: which should you send? (UK)

Updated 16 October 2026 · Sources: GOV.UK, legislation.gov.uk

When a business client won't pay, two formal documents come up again and again: the letter before action and the statutory demand. They are not interchangeable. One is the normal last step before a court claim. The other is an insolvency tool that should only be used when the debt is genuinely undisputed. This guide explains the difference in plain English. It is general information, not legal advice.

What is a letter before action?

A letter before action (sometimes called a letter before claim) tells the debtor that you will start court proceedings if they don't pay by a deadline. Courts expect you to send one before issuing a claim, under the Practice Direction on Pre-Action Conduct. If your customer is a sole trader or individual, the stricter Pre-Action Protocol for Debt Claims applies and you must give them 30 days to respond.

A good letter before action states the amount owed, the invoices, any statutory interest and compensation you're claiming, a clear payment deadline and that you'll issue a claim (for example through Money Claim Online) if it isn't paid.

What is a statutory demand?

A statutory demand is a formal demand under insolvency law. If a company owes you £750 or more and doesn't pay, secure or compound the debt within 21 days, you can use that as grounds to petition to wind the company up. For individuals (including sole traders) the bankruptcy petition threshold is £5,000. See GOV.UK: make and serve a statutory demand.

The key difference

• Purpose: a letter before action leads to a court claim for the money. A statutory demand leads towards winding-up or bankruptcy.
• Disputed debts: if the client genuinely disputes the invoice, a statutory demand is the wrong tool. Courts can set it aside and you may be ordered to pay costs.
• Tone: a letter before action is a normal commercial step. A statutory demand is a serious escalation that usually ends the relationship.
• Cost: a letter costs nothing to send. A winding-up petition involves court fees and a deposit.

Which should you send?

For most freelancers and small agencies, the sequence is: polite reminders, a firm final reminder with statutory interest, then a letter before action, then a small claim if needed. Reserve a statutory demand for clear, undisputed debts where you believe the client can pay but is choosing not to, and consider taking advice first.

Make the earlier steps work

Most invoices never need either document if the reminders are firm, on time and mention the client's legal liability for interest. That is exactly what LatePay automates, including a letter before action PDF when you need one.