A Letter of Intent (LOI) is a pre-contractual document used in England and Wales to record the principal terms upon which two or more parties propose to enter into a definitive agreement. It is a cornerstone of English commercial practice, used across virtually every sector to set out the framework for negotiations while clearly distinguishing between binding and non-binding commitments. Unlike a binding contract, a properly drafted Letter of Intent does not commit the parties to completing the proposed transaction; rather, it records their mutual understanding and intention to negotiate in good faith towards a definitive agreement.

Under English contract law, the enforceability of a Letter of Intent depends on the intention of the parties as objectively assessed from the language of the document and the surrounding circumstances. The Supreme Court in RTS Flexible Systems Ltd v Molkerei Alois Müller GmbH [2010] UKSC 14 confirmed that a court will examine all relevant evidence to determine whether the parties intended to create legal relations. The use of the phrase 'subject to contract' creates a strong presumption that the parties did not intend to be bound, but this presumption can be rebutted if the parties' conduct is inconsistent with a lack of binding obligation.

In English commercial practice, it is standard to structure a Letter of Intent so that certain provisions — typically confidentiality, exclusivity (no-shop), costs, and governing law — are expressly stated to be legally binding, while the remaining commercial terms are expressed as non-binding statements of intent. This hybrid approach provides the parties with the protection they need during negotiations without creating an inadvertent binding commitment to complete the transaction.

Our UK Letter of Intent template is drafted in accordance with English contract law and is suitable for a wide range of commercial transactions, including business acquisitions, joint ventures, property transactions, supply agreements, and investment proposals. It is governed by the laws of England and Wales, with exclusive jurisdiction conferred on the courts of England and Wales.

A Letter of Intent is appropriate in a wide range of commercial scenarios in England and Wales where the parties wish to record the principal terms of a proposed transaction before committing to a formal agreement. It serves as a roadmap for negotiations, providing clarity on the key commercial terms that the parties have agreed in principle while preserving each party's right to withdraw if the transaction does not proceed.

The most common situations in which a UK Letter of Intent is used include: negotiations for the acquisition of a business or company, where the buyer and seller wish to agree on the purchase price, deal structure, and key conditions before incurring the cost of detailed due diligence and legal documentation; joint venture discussions, where two or more parties are exploring a collaborative business arrangement; property transactions, particularly in commercial real estate, where the parties wish to agree on heads of terms before instructing solicitors to prepare the formal contract; major supply or service contracts, where the parties wish to confirm the commercial terms before committing to a long-form agreement; and investment rounds, where an investor wishes to indicate its intention to invest on certain terms, subject to due diligence and documentation.

A Letter of Intent is also used in the context of public procurement and construction projects, where a party may wish to authorise preliminary work to commence before the formal contract is in place. In the construction context, the Court of Appeal in British Steel Corporation v Cleveland Bridge and Engineering Co Ltd [1984] 1 All ER 504 considered the enforceability of a letter of intent that authorised work to begin, and held that the contractor was entitled to a reasonable payment on a quantum meruit basis for work done pursuant to the letter, even though no formal contract was ever concluded.

It is important to use a Letter of Intent whenever there is a material risk that the proposed transaction may not proceed, as it protects both parties by ensuring that binding obligations (such as confidentiality and exclusivity) are in place from the outset, while non-binding provisions preserve the parties' freedom to negotiate and, if necessary, withdraw.

A well-drafted Letter of Intent for use in England and Wales should contain several critical elements that distinguish it from both a binding contract and a mere expression of interest.

The 'subject to contract' designation is the most important structural feature of a UK Letter of Intent. This phrase, which has a well-established meaning in English law dating back to Winn v Bull (1877) 7 Ch D 29, indicates that the parties do not intend to be legally bound by the commercial terms until a formal written agreement is executed. The template should prominently display this designation and reinforce it with express language in the body of the document.

The clear separation of binding and non-binding provisions is essential. Under English contract law, it is perfectly possible — and indeed standard commercial practice — for certain provisions of a Letter of Intent to be legally binding while others are not. The binding provisions typically include confidentiality (to protect information exchanged during negotiations), exclusivity or no-shop clauses (to prevent one or both parties from negotiating with third parties during the exclusivity period), costs (to clarify who bears the expenses of the negotiation process), and governing law and jurisdiction (to ensure that any disputes are resolved in the correct forum). All other commercial terms should be expressly stated to be non-binding.

The exclusivity clause (also known as a 'lock-out' agreement) is a frequently used feature in UK Letters of Intent. Following Pitt v PHH Asset Management Ltd [1994] 1 WLR 327, English courts will enforce a negative obligation not to negotiate with third parties for a defined period, provided the clause is supported by adequate consideration and is sufficiently certain as to its terms. However, courts will not enforce a positive obligation to negotiate in good faith (Walford v Miles [1992] 2 AC 128).

The conditions precedent section lists the conditions that must be satisfied before the parties will enter into the Definitive Agreement. These typically include satisfactory completion of due diligence, board or shareholder approval, regulatory clearances, and third-party consents. This section should clearly state that if the conditions are not met, either party may withdraw without liability.

The expiry date provides certainty by specifying when the Letter of Intent will cease to have effect if the Definitive Agreement has not been executed. This prevents the letter from remaining in force indefinitely and provides a clear deadline for the completion of negotiations.

The governing law and jurisdiction clause should specify England and Wales as the governing law and confer exclusive jurisdiction on the courts of England and Wales for any disputes arising out of the binding provisions.