Use cases
Recovering Unpaid Invoices in the UK
Last updated: June 2026
What can a UK business do when a client does not pay?
A late invoice is common and usually recoverable. The goal is to be firm, factual and consistent, and to build a clean record as you go. Start by confirming the basics: that the invoice was correct, sent to the right contact, and is genuinely overdue under your agreed payment terms. A short, professional reminder resolves many cases on its own.
If reminders are ignored, you escalate in steps. Each step raises the seriousness and leaves a documented trail, which matters if the matter later reaches a solicitor or the court. The point of a structured approach is to keep the debt well-evidenced and to give the debtor clear, repeated opportunities to pay before any formal action.
What is the UK escalation ladder?
For overdue business-to-business invoices, recovery typically follows a predictable ladder. Court is the last rung, not the first — it is slower and costlier than settling, and the earlier rungs resolve most cases.
| Step | What it is | Typical purpose |
|---|---|---|
| 1. Reminder | A polite then firm chase, in writing | Prompt payment and confirm the debt is acknowledged |
| 2. Letter Before Action | A formal written demand setting out the debt and a deadline | Signal you are serious and invite payment or a response before court |
| 3. Evidence pack | An organised bundle of the contract, invoices, delivery and chase history | Make the debt easy to review by you, a solicitor or the court |
| 4. Solicitor / court preparation | Taking advice or preparing a claim | Used only when earlier steps fail — court is a last resort |
For a company or other corporate debtor, a Letter Before Action follows the court's Practice Direction on Pre-Action Conduct, which expects parties to exchange information and try to resolve matters before issuing a claim (commonly allowing at least 14 days to respond). The Pre-Action Protocol for Debt Claims, with its longer 30-day reply window, applies only where the debtor is an individual or a sole trader — not a limited company.
How does WolfX structure recovery?
WolfX is software that helps UK B2B businesses prepare evidence-backed invoice-recovery workflows. It helps you generate a Letter Before Action and a Court Readiness Pack, and gives you an Evidence Vault to store and reference the records behind a debt. The aim is to keep each case consistent and well-documented so it is ready for internal, solicitor, compliance or pre-action review.
You stay in control of every decision. WolfX organises the overdue-invoice evidence and produces the documents; you choose when to send, whether to take advice, and whether to escalate. A Court Readiness Pack is a structured bundle to help you and your adviser review a claim — it is not a court filing and not an official or certified court document.
What evidence strengthens your position?
A debt is far easier to pursue when the supporting record is complete and consistent. Pulling these together early — rather than scrambling at the court stage — is the single biggest practical improvement most businesses can make.
| Evidence | Why it matters |
|---|---|
| The contract or agreed terms | Establishes the obligation to pay and the payment terms |
| The invoice(s) | Shows the amount, the due date and what was charged for |
| Proof of delivery or work done | Confirms the goods or services were provided |
| Communications and chase history | Demonstrates the debt was acknowledged and pursued reasonably |
| Any partial payments or promises | Records the debtor's conduct and any admissions |
Can you charge interest and compensation?
For qualifying commercial debts between businesses, UK law generally allows you to claim statutory interest plus a fixed compensation sum once payment is overdue, subject to your contract terms and the facts. Setting this out clearly in a reminder or Letter Before Action makes the position transparent and is often enough to prompt payment. This is general information, not legal advice — check your contract and your circumstances, or take advice.
What is WolfX not?
WolfX is software, not a law firm, court or regulated debt collector, and it does not provide legal advice. It does not guarantee recovery. It does not file court claims for you, does not collect debtor payments directly, and does not send physical post. It helps you organise evidence and prepare documents so you, your solicitor or your compliance team can make informed decisions.
WolfX is software for evidence-backed invoice recovery workflows. WolfX is not a law firm, debt collection agency, court, or payment processor. This site provides general information, not legal advice.
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Frequently asked questions
What can a UK business do if a client ignores an invoice?
Work through an escalation ladder: send a firm written reminder, then a Letter Before Action setting out the debt and a deadline, and gather the supporting evidence (contract, invoices, delivery, chase history). Most disputes settle before court, which is a last resort.
When should I escalate?
Escalate when reminders are ignored or the debtor stops engaging. The next step is usually a Letter Before Action. For a company debtor, the court's Practice Direction on Pre-Action Conduct typically expects at least 14 days to respond; the 30-day Pre-Action Protocol for Debt Claims applies only to individuals and sole traders.
Can I charge interest on a late invoice?
For qualifying B2B commercial debts, UK law generally allows statutory interest plus a fixed compensation sum once payment is overdue, subject to your contract and the facts. This is general information, not legal advice — check your circumstances.
Turn an overdue invoice into an evidence-backed recovery case.