Atornee
Get Started Free
Generate Letter of Intent Now

Lawyer reviewed templates

how to draft a letter of intent uk

How to Draft a Letter of Intent in the UK

If you need to know how to draft a letter of intent in the UK, you are probably at an early stage of a deal — an acquisition, a partnership, a property transaction, or a supplier arrangement — and you want something in writing before the full contract is ready. A letter of intent (LOI) sets out the key commercial terms both parties have agreed in principle. It signals commitment without necessarily creating a binding contract, though that distinction matters enormously and depends on how you word it. Get it wrong and you could accidentally bind yourself to terms you did not intend to commit to, or worse, give the other side grounds to walk away cleanly while you have already spent money on due diligence. This guide walks through what a UK letter of intent must include, what makes certain clauses binding versus non-binding, and where the legal risk actually sits. It is written for founders and business owners who want to move quickly without creating problems for themselves later.

Generate Letter of Intent Now
Instant Access
Lawyer Reviewed

Why this matters

Most founders drafting a letter of intent for the first time do not realise that some clauses inside an LOI can be legally binding even when the document as a whole is described as non-binding. Confidentiality obligations, exclusivity periods, and break fee provisions are routinely enforceable under English law regardless of what the header says. The result is that a document you treated as a handshake in writing can become a contractual commitment you did not intend to make. On the other side, a poorly drafted LOI can fail to protect you during the negotiation period, leaving you exposed if the other party walks away after you have spent time and money on due diligence.

The Atornee approach

Atornee lets you generate a structured letter of intent built around UK commercial practice, not a generic international template. You answer a short set of questions about your deal — the parties, the subject matter, which clauses you want binding, and whether you need exclusivity or confidentiality baked in — and Atornee produces a draft you can review, edit, and send. It is not a substitute for a solicitor on a complex M&A transaction, and we will tell you that plainly. But for straightforward commercial arrangements where you need a credible, well-structured LOI quickly, it removes the blank-page problem and the risk of missing something obvious.

What you get

A UK-specific LOI structure that clearly separates binding from non-binding clauses, reducing the risk of accidental contractual commitment.
Plain-English guidance on which provisions — exclusivity, confidentiality, break fees — are typically made binding and why.
A drafting checklist covering the core commercial terms your LOI should capture before you enter full contract negotiations.
Honest flags on when your deal is complex enough that you should involve a solicitor before sending anything to the other side.

Before you sign checklist

1
1. Confirm the purpose of your LOI — are you recording heads of terms for an acquisition, a joint venture, a property deal, or a commercial partnership? The structure differs.
2
2. List the key commercial terms already agreed verbally: price, timeline, conditions, and any exclusivity period.
3
3. Decide which clauses must be binding immediately — typically confidentiality and exclusivity — and which should remain subject to contract.
4
4. Identify whether your deal involves personal data, IP transfer, or regulated activities, as these require specific clause treatment under UK law.
5
5. Draft the LOI using a UK-specific template, then review every clause against your intended binding or non-binding status before sending.
6
6. Have both parties sign and date the document, and keep a copy in your deal records alongside any related NDA.
7
7. If the deal value is significant or the terms are complex, instruct a solicitor to review the LOI before it is exchanged.

FAQ

Is a letter of intent legally binding in the UK?

It depends on how it is drafted. An LOI can be entirely non-binding, entirely binding, or — most commonly — a mix of both. Under English law, courts look at the language used and the intention of the parties. Clauses that impose clear obligations, such as confidentiality or exclusivity, are often enforceable even when the rest of the document is expressed as subject to contract. Never assume the whole document is non-binding just because the title says so.

What is the difference between a letter of intent and heads of terms?

In UK practice the terms are often used interchangeably, but heads of terms tends to be used in property and M&A transactions, while letter of intent is more common in commercial and supplier contexts. Both serve the same function: recording agreed commercial terms before a full contract is drafted. The legal effect depends on the wording, not the label.

What should a letter of intent include?

At minimum: the identity of both parties, the subject matter of the proposed deal, the key commercial terms agreed so far, a clear statement of which clauses are binding and which are not, any exclusivity or lock-out period, confidentiality obligations, a governing law clause (English law for most UK deals), and an expiry date. Missing the expiry date is a common mistake that leaves the LOI open-ended.

Can I use a letter of intent instead of a contract?

No. An LOI is a pre-contractual document. It is not a substitute for a properly drafted contract. Its purpose is to record agreed terms and create a framework for negotiation, not to govern the full commercial relationship. Once your LOI is signed, you should move promptly to drafting the underlying contract.

Do I need a solicitor to draft a letter of intent?

Not always. For straightforward commercial arrangements with modest deal values, a well-structured template reviewed carefully by both sides is often sufficient. You should involve a solicitor if the deal value is material, if the LOI includes binding exclusivity or break fee provisions, if the transaction is regulated, or if there is any ambiguity about what has been agreed. When in doubt, the cost of a solicitor review is small relative to the cost of a dispute.

What makes an exclusivity clause in an LOI enforceable?

Under English law, an exclusivity or lock-out clause is enforceable if it is clear, time-limited, and supported by consideration. A clause that simply says the parties will negotiate exclusively is unlikely to be enforceable on its own. It needs a defined period, a clear scope of what exclusivity covers, and ideally some form of consideration — even if that is the mutual commitment to negotiate in good faith within that window.

Related Atornee Guides

Cheap Contract Solicitor Alternative (UK)

Useful if you want to understand the broader contract workflow after your LOI is signed.

Cheap Solicitor for NDA (UK)

If your LOI does not include a confidentiality clause, you may need a standalone NDA alongside it.

Atornee Use Cases

See how founders and operators use Atornee across different deal and document types.

External References

GOV.UK Business and Self-employed

Official UK guidance on business operations and commercial dealings.

UK Legislation

Primary statutory reference for English contract law, including the Contracts (Rights of Third Parties) Act 1999 and related legislation relevant to LOI enforceability.

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 UK commercial practice around pre-contractual documents, including common drafting errors identified across LOI, heads of terms, and NDA workflows. It reflects the practical questions UK founders ask when preparing for deal negotiations."

References & Sources