A well-prepared letter before action—also called a letter of claim—sets out the dispute clearly and gives the other side a final opportunity to resolve it before court proceedings. This guide explains what to include, which pre-action steps to check, how to calculate a claim, and when it may be appropriate to start a small claim.
Overview
A letter before action is a formal notice that you intend to issue a civil claim if the dispute is not resolved. It is not the same as a court claim, and sending one does not guarantee that you will win. Its purpose is to identify the legal and factual basis of the dispute, state the remedy sought, and encourage proportionate settlement.
Before writing, identify which part of the UK applies. Civil procedure differs between England and Wales, Scotland, and Northern Ireland. The terminology, court process, time limits and pre-action requirements may also depend on the type of dispute. In England and Wales, a relevant pre-action protocol may apply, such as a protocol for debt claims, construction and engineering disputes, professional negligence, or housing disrepair. If no specific protocol applies, the general Practice Direction on Pre-Action Conduct and Protocols may be relevant.
Do not use a generic letter without checking the correct procedure. A protocol may require more information, a particular form of reply, or a reasonable period for the recipient to respond. A failure to follow the applicable process can affect case management and costs, even where the underlying complaint has merit.
Checklist by scenario
For an unpaid invoice or debt
- State who owes the money, the agreement or transaction involved, and when payment was due.
- Identify each invoice or item claimed, including the principal amount and any payments already received.
- Explain how the balance was calculated and attach or list supporting records.
- Check whether a specific debt pre-action protocol applies before sending the letter.
- State how and when the recipient can pay, and whether you will consider an instalment proposal.
For defective goods or poor services
- Describe what was ordered, the contract date, the price, and the promised or reasonable standard of performance.
- Give a short chronology of the defect or failure and your attempts to obtain a repair, replacement, refund or other remedy.
- Explain the loss claimed. Separate the price paid from additional, reasonably foreseeable losses and avoid including unsupported estimates.
- State whether you are seeking a refund, the cost of remedial work, damages, or another practical remedy.
- For consumer disputes, check whether a complaint, alternative dispute resolution or ombudsman route should be completed first.
For property, tenancy or repair disputes
- Identify the property, the parties, the tenancy or service agreement, and the person responsible for the alleged failure.
- List dates when the problem was reported, access was offered, inspections occurred and work was attempted.
- Describe the impact without exaggeration, such as damaged belongings, loss of use or the cost of alternative work.
- Check whether a housing disrepair or other specialist pre-action protocol applies.
- Consider whether urgent action is needed. A letter before action may not be suitable where there is an immediate safety, possession or injunction issue.
Reusable letter structure
Use a clear heading such as “Letter of Claim” or “Letter Before Action”. Include:
- Your name and contact details, the recipient’s correct legal name and address, and the date.
- A subject line identifying the contract, account, property or transaction.
- The legal basis in plain language—for example, breach of contract, failure to provide reasonable care and skill, or non-payment of an agreed debt.
- A concise chronology of the important facts.
- The remedy and a schedule showing the calculation of the amount claimed.
- Any interest claimed, identifying the legal or contractual basis and the period used. Do not assume interest is automatic.
- A list of key documents, with copies where appropriate and safe to disclose.
- A reasonable response deadline based on the applicable protocol or the complexity of the dispute.
- Settlement options, including a request for payment, a proposed repair, mediation or a written response to specific points.
- A calm warning that court proceedings may follow if the dispute is not resolved, while making clear that you will consider a proper response.
What to double-check
First, check the limitation period. The deadline for bringing a claim depends on the cause of action and the facts. Sending a letter does not necessarily stop time running. If the limitation date is approaching, obtain legal advice promptly rather than relying on correspondence.
Next, check the correct defendant. A trading name may not be the company’s legal name, and an individual business owner may have a different legal identity from a limited company. Use contract documents, invoices and official business records to verify the party.
Review every figure. Keep a simple schedule with the date, description, amount, evidence and calculation for each item. Remove amounts that are speculative, duplicated or unrelated. If you claim interest, record the rate, start date, end date and daily amount, but verify the legal basis before including it.
Preserve evidence in its original form. Save contracts, terms, photographs, reports, receipts, messages, call notes and delivery records. Keep a dated communication log. Avoid editing screenshots in a way that removes context, and do not make admissions or threats that could distract from the actual dispute.
Finally, check whether the dispute belongs in a different route. An ombudsman, internal complaints process, tribunal, tenancy scheme or specialist regulator may be more suitable than court. Alternative dispute resolution can sometimes resolve a dispute more quickly and may be expected under a relevant protocol.
Common mistakes
- Sending an ultimatum with no explanation: A demand is stronger when the facts, legal basis and calculation can be understood by someone who has not followed the dispute.
- Using the wrong deadline: Do not impose an arbitrary short deadline where a protocol requires a longer response period.
- Overstating the law: Refer to the relevant contractual term or legal principle accurately, and distinguish an argument from an established fact.
- Ignoring partial responsibility: If the other side has made an offer or accepts part of the complaint, address it and explain what remains disputed.
- Claiming costs automatically: The costs recoverable in a small claim are limited in many circumstances. Do not promise that all preparation or legal costs will be repaid.
- Starting proceedings immediately: Issuing a claim before completing required pre-action steps can lead to delay, criticism or other procedural consequences.
- Failing to record delivery: Send the letter using a method that provides a reliable record, retain the letter and attachments, and note when it was received if that can be established.
If no satisfactory response arrives after the correct deadline, compare the evidence with the legal test before issuing a claim. Check the current court process, forms, fees and procedural guidance rather than relying on an old template. A small claim may be appropriate for a straightforward money dispute, but complexity, value, urgency and the remedy sought all matter.
When to revisit
Return to this checklist whenever the amount claimed changes, a new document arrives, the recipient makes a settlement offer, or the response deadline passes. Update the schedule rather than sending inconsistent figures. Record whether an offer is accepted, rejected or made on a particular basis, and keep settlement communications separate from evidence intended for court where appropriate.
Recheck the applicable pre-action protocol, court forms, filing process, fees and limitation position immediately before starting proceedings. These procedural details can change, and this article is general information rather than advice on the facts of a particular dispute. If the claim is high-value, technically complex, close to a limitation deadline, or involves an urgent remedy, consider obtaining advice from a qualified legal professional.
Final action checklist: identify the correct defendant; confirm the legal basis; assemble the chronology and evidence; calculate the remedy and any properly supported interest; check the relevant protocol; send a complete letter; allow the correct response period; consider settlement; and only then decide whether issuing a claim is proportionate.
