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how to draft a sub-contractor agreement uk

How to Draft a Sub-Contractor Agreement in the UK

If you need to know how to draft a sub-contractor agreement in the UK, you are in the right place. A sub-contractor agreement is a legally binding contract between a main contractor and a sub-contractor, setting out the scope of work, payment terms, liability, and how the relationship ends. Getting this wrong is expensive. Without a written agreement, you are exposed to disputes over deliverables, IR35 misclassification risk, and no clear route to recourse if work is substandard. UK law does not require sub-contractor agreements to follow a specific template, but they must reflect the actual working relationship to hold up. This guide walks you through every clause you need, what UK-specific legal considerations apply — including employment status, HMRC rules, and data protection under UK GDPR — and where Atornee can help you generate a solid first draft without paying solicitor rates for a standard document.

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Why this matters

Most UK founders and project managers reach for a generic template when they need to bring in a sub-contractor. The problem is that generic templates rarely reflect the actual work, the payment structure, or the liability split that matters for your specific project. You end up with a document that looks professional but leaves you exposed. Disputes over who owns the deliverables, what happens if the sub-contractor misses a deadline, or whether HMRC would view the arrangement as disguised employment are all common and costly. This page exists to help you draft something that actually protects you.

The Atornee approach

Atornee is not a law firm and does not give legal advice. What it does is generate a structured, UK-specific sub-contractor agreement based on your inputs — scope, payment terms, IP ownership, termination conditions — in minutes. You get a document you can read, understand, and edit before sending to a solicitor for a quick review if the contract value warrants it. That is faster and cheaper than starting from scratch with a solicitor, and more reliable than a free template that has not been updated since 2018. Atornee is built for UK businesses, so the defaults reflect UK law, not US or generic international standards.

What you get

A clause-by-clause breakdown of what every UK sub-contractor agreement must include, written in plain English.
Specific guidance on employment status and IR35 risk so your agreement reflects a genuine contractor relationship.
IP and confidentiality clause guidance so you own the work product and protect sensitive information.
Payment, invoicing, and late payment terms aligned with the Late Payment of Commercial Debts (Interest) Act 1998.
A practical checklist you can use before signing, whether you drafted the document or received one from the other side.

Before you sign checklist

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1. Define the scope of work precisely — list deliverables, milestones, and what is explicitly out of scope before you open any template.
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2. Confirm the employment status position — review HMRC's Check Employment Status for Tax (CEST) tool to ensure the arrangement is genuinely self-employed.
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3. Decide who owns the IP — work created by a sub-contractor belongs to them by default under UK copyright law unless your agreement says otherwise.
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4. Set payment terms clearly — specify amounts, invoice schedule, payment method, and what happens if payment is late.
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5. Include a termination clause — cover both parties' rights to end the agreement, notice periods, and what happens to work in progress.
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6. Add a confidentiality clause if the sub-contractor will access sensitive business information, client data, or proprietary processes.
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7. Check whether UK GDPR applies — if the sub-contractor processes personal data on your behalf, you need a Data Processing Agreement or equivalent clause.

FAQ

Does a sub-contractor agreement need to be in writing in the UK?

No, UK law does not require it to be written. Verbal contracts are technically enforceable. But proving what was agreed without a written document is extremely difficult and expensive. Always get it in writing.

What is the difference between a sub-contractor agreement and an employment contract?

An employment contract creates an employer-employee relationship with statutory rights attached — holiday pay, sick pay, unfair dismissal protection. A sub-contractor agreement is a commercial contract between two businesses or a business and a self-employed individual. The distinction matters for tax, National Insurance, and IR35. The label you put on the document is not what HMRC looks at — the actual working arrangement is.

Who owns the work a sub-contractor produces?

Under the Copyright, Designs and Patents Act 1988, the default position is that the creator owns the copyright unless they are an employee. A sub-contractor is not an employee, so without an explicit IP assignment clause in your agreement, they own what they create. Always include an IP assignment clause if you need to own the deliverables.

Can I use a free template for a sub-contractor agreement?

You can, but check when it was last updated, whether it is UK-specific, and whether it covers your actual situation. Many free templates miss IR35 considerations, UK GDPR data clauses, and the Late Payment of Commercial Debts Act. A template is a starting point, not a finished document.

Do I need a solicitor to draft a sub-contractor agreement?

For a straightforward, low-value engagement, probably not — a well-structured template or AI-generated draft you have reviewed carefully is usually sufficient. For high-value contracts, complex IP arrangements, or anything where the risk of dispute is significant, having a solicitor review the final document is worth the cost.

What happens if there is no termination clause in the agreement?

Without a termination clause, ending the arrangement can become legally messy. Common law implies a reasonable notice period, but what is reasonable is open to interpretation and dispute. Always include explicit termination rights, notice periods, and provisions for work in progress and outstanding payments.

Related Atornee Guides

Cheap Contract Solicitor Alternative (UK)

Compare broader contract workflow options if you need more than a sub-contractor agreement.

Cheap Solicitor for NDA (UK)

Pair with a standalone NDA if confidentiality needs to be in place before work begins.

Atornee Use Cases

See how UK founders and project managers use Atornee across different contract types.

External References

GOV.UK Business and Self-employed

Official UK government guidance on business operations, including self-employment and contractor rules.

UK Legislation

Primary statutory reference for UK contract law, including the Late Payment of Commercial Debts Act and Copyright, Designs and Patents Act 1988.

ICO Guidance for Organisations

UK data protection authority guidance — essential if your sub-contractor will handle personal data under UK GDPR.

Trust & Verification Policy

Authored By

A

Atornee Editorial Team

UK Contract Research

Reviewed By

C

Compliance Review Desk

UK Business Legal Content QA

Last reviewed on 3/4/2026

"This content is based on analysis of common sub-contractor agreement disputes, HMRC employment status guidance, and UK contract law as it applies to small and medium-sized businesses. It reflects the practical drafting questions UK founders and project managers ask most frequently."

References & Sources