This is one of the most common problems UK freelancers face, and it's also one of the most misunderstood. Many freelancers assume that without a signed contract, they have no legal standing.
That's wrong.
Under English and Welsh law, you don't need a written contract to have a legally binding agreement. Verbal agreements, email chains, and even implied contracts are enforceable. Here's exactly where you stand and what to do about it.
In the UK, a contract exists when four elements are present:
There are only a handful of contract types that must be in writing under UK law (property sales, guarantees, hire purchase agreements). Freelance service agreements are not one of them.
You discussed the work, agreed a price, and shook hands (literally or figuratively). This is the most straightforward non-written contract.
The challenge: Proving what was specifically agreed. This is where supporting evidence matters (more on this below).
Any exchange of emails, WhatsApp messages, Slack messages, or DMs where work and payment were discussed can constitute a written contract — even if nobody called it that.
The advantage: This is actually strong evidence because there's a written record with timestamps.
Even if you never discussed a price at all, you're still entitled to reasonable payment for work performed and accepted. This legal principle is called quantum meruit — Latin for "as much as is deserved."
Without a written contract, evidence becomes everything. The good news: you probably have more evidence than you think.
| Evidence Type | Where to Find It | How Strong Is It? |
|---|---|---|
| Email threads discussing the project | Your email inbox | ⭐⭐⭐⭐⭐ Very strong |
| WhatsApp/text messages about the work | Phone, WhatsApp Web export | ⭐⭐⭐⭐⭐ Very strong |
| Slack/Teams messages | Chat history, screenshots | ⭐⭐⭐⭐ Strong |
| The delivered work files (with metadata) | Your computer, shared drives | ⭐⭐⭐⭐ Strong |
| Previous invoices for similar work with this client | Your accounting records | ⭐⭐⭐⭐ Strong (establishes precedent) |
| Meeting notes | Your notebook, shared docs | ⭐⭐⭐ Moderate |
| Calendar invites for project meetings | Google Calendar, Outlook | ⭐⭐⭐ Moderate (proves engagement) |
| Witness testimony (colleague who was present) | Ask them to provide a statement | ⭐⭐⭐ Moderate |
| Partial payment already made | Bank statements | ⭐⭐⭐⭐⭐ Very strong (proves agreement to pay) |
| Time tracking records | Toggl, Clockify, timesheets | ⭐⭐⭐ Moderate (proves work done) |
Before you contact the client, collect everything:
If you haven't already invoiced, send a proper invoice now. Even without a prior agreement on price, invoice for your standard rate or industry-standard rate. Include:
If the invoice goes unpaid, send a formal demand letter. Here's a template:
This is the formal last step before court proceedings. It's a legal requirement under the Pre-Action Protocol for Debt Claims. The letter must:
For claims up to £10,000 in England and Wales, you can use the Small Claims Court. The process is straightforward and you don't need a solicitor.
| Claim Amount | Court Fee |
|---|---|
| Up to £300 | £35 |
| £300.01 – £500 | £50 |
| £500.01 – £1,000 | £70 |
| £1,000.01 – £1,500 | £80 |
| £1,500.01 – £3,000 | £115 |
| £3,000.01 – £5,000 | £205 |
| £5,000.01 – £10,000 | £455 |
You can file online at gov.uk/make-court-claim-for-money. The fee is added to your claim — if you win, the client pays it.
For a detailed walkthrough of the Small Claims Court process, see our complete guide to suing for unpaid invoices.
The Late Payment of Commercial Debts (Interest) Act 1998 applies to ALL commercial transactions in the UK — written contract or not. This is your most powerful tool.
Under this legislation, you can charge:
| What You Can Charge | Amount |
|---|---|
| Statutory interest | 8% + Bank of England base rate (currently 4.5%) = 12.5% per year |
| Fixed compensation (debt under £1,000) | £40 |
| Fixed compensation (£1,000 – £9,999) | £70 |
| Fixed compensation (£10,000+) | £100 |
| Reasonable debt recovery costs | Actual costs incurred |
For the full breakdown of your late payment rights, see our guide to statutory interest on late invoices.
Doesn't matter. Under quantum meruit, you're entitled to a reasonable rate for work performed and accepted. The court will assess what's reasonable based on your previous rates, industry standards, and the scope of work.
If they accepted the work, used it, or didn't raise issues at the time of delivery, this argument is weak. They had a duty to raise concerns promptly. Using the work and then refusing to pay is not a legitimate defence.
Commercial arrangements between businesses carry a presumption of being legally binding. If you're a freelancer and they're a business client, the court presumes this was a commercial transaction, not a gift.
Completely wrong. As explained above, verbal and implied contracts are fully enforceable under UK law. The Small Claims Court handles these cases routinely.
"Pay when paid" clauses are void under the Late Payment of Commercial Debts Act. A client's own cash flow problems are not your problem. You're entitled to payment within a reasonable time (typically 30 days).
The best outcome is never being in this situation. Here's how to protect yourself going forward:
Even a simple one-page agreement is better than nothing. It should cover:
See our full guide: How to Write a Freelance Contract in the UK
A 50% deposit before starting work is standard and reasonable. It proves the client is serious and ensures you're not working for free if they disappear. See our freelancer deposit policy guide.
Send your invoice the day you deliver the work — not a week later. Delayed invoicing signals that payment isn't urgent. For guidance on professional invoicing: Self-Employed Invoicing Guide UK
A quick Companies House check can reveal if a business has CCJs, overdue accounts, or financial difficulties. Free and takes 5 minutes. See our guide: How to Credit Check Clients
For projects over £1,000, split the payment into milestones. Deliver in stages, get paid in stages. Never have more than a few days of unpaid work outstanding. Guide: Freelance Milestone Payments
Our Contract Template Pack (£15) includes ready-to-use UK freelance contracts, scope of work templates, and payment terms clauses — everything you need to protect yourself from day one.
Already dealing with a non-paying client? The Getting-Paid Toolkit (£19) includes payment demand letter templates, a step-by-step recovery guide, and email sequences for every stage of the collection process.
Disclaimer: This guide provides general information about UK law and is not legal advice. For complex disputes or high-value claims, consider consulting a solicitor.