Execution Clauses in UK Commercial Contracts: Drafting Tips

If you’ve ever been ready to sign a contract, only to get stuck on the “how do we actually sign this?” part, you’re not alone.

For small businesses, execution can feel like an admin detail. But in practice, it’s often the difference between a contract that’s enforceable and one that’s open to challenge (especially when there’s a dispute and everyone is suddenly looking closely at what was signed, by whom, and in what capacity).

That’s where execution clauses come in. A well-drafted execution clause (and matching signature blocks) helps you sign correctly, evidence authority, and reduce arguments later about whether the agreement ever became binding.

Below, we’ll break down what execution clauses are, when you need them, and how to draft them in a practical, UK-friendly way (noting that some rules can differ depending on whether you’re dealing with England and Wales, Scotland, or Northern Ireland).

What Are Execution Clauses (And Why Do They Matter)?

In plain English, execution clauses are the parts of a contract that set out:

• how the agreement must be signed (eg under hand, as a deed, electronically, in counterparts);
• who can sign (eg directors, authorised signatories, individuals); and
• what formalities apply (eg witnesses, attestation wording, and any company execution requirements that apply).

You’ll usually see execution clauses near the end of a contract, alongside the signature blocks. Sometimes they’re a short paragraph. Other times they’re a more detailed “Execution” or “Signing” section.

They matter because if execution is done incorrectly, you can end up with issues like:

• uncertainty about whether a contract was formed (eg only one party signed, or acceptance was unclear);
• the “wrong” person signed (eg someone without authority);
• a deed that isn’t valid as a deed because the required formalities weren’t followed; or
• delays and disputes when a counterparty insists the contract isn’t binding because execution wasn’t in the right form.

Even if the commercial terms are perfect, messy execution can weaken your position when you need to enforce the contract.

When Do You Actually Need Execution Clauses?

Technically, many contracts can be valid with very minimal signing wording (and sometimes even without signatures, depending on how they were agreed). But for business-to-business agreements, having clear execution clauses is a smart move because it reduces ambiguity.

You’ll usually want a clear execution clause where:

• your contract is high value or long-term (you want certainty from day one);
• you’re dealing with a company group and need clarity on which entity is signing;
• signing will happen remotely (eg different locations, electronic signatures, signing in counterparts);
• someone may sign on behalf of someone else (eg delegated authority);
• you are executing a deed (more formal requirements apply, and the rules can differ across the UK); or
• you want a clean audit trail for investors, lenders, or due diligence later.

A common small business scenario is this: you’ve negotiated the deal yourself, but the other side wants “a director to sign”, or they insist on a witness, or they send you an agreement “to be executed as a deed”. If your contract doesn’t clearly handle those mechanics, you end up scrambling at the finish line.

Execution is also closely tied to the general legal signature requirements in the UK, so it’s worth getting the foundations right rather than relying on assumptions.

What Should A Good Execution Clause Cover?

There isn’t one universal format (it depends on what you’re signing, who the parties are, and which UK jurisdiction’s law governs the contract), but strong execution clauses commonly cover the points below.

1) “Under Hand” vs “As A Deed”

Most commercial contracts are signed under hand (ie as a standard contract). Some documents are intended to be signed as a deed, which is a more formal method of execution.

Whether something needs to be a deed depends on the transaction and the legal effect you’re trying to achieve. A deed often comes up where:

• there’s no “consideration” (eg a pure promise or guarantee);
• you need the longer limitation period that typically applies to deeds; or
• the document type commonly uses deeds in practice (eg certain property-related documents).

Deeds have extra formalities in England and Wales, and the rules can differ in Scotland and Northern Ireland. So, if your contract says it’s a deed, your execution clause needs to match the requirements that apply to the governing jurisdiction and the type of document. This is also why it’s important that the signature block and wording align with the intention (eg using “executed as a deed” where appropriate).

If you’re unsure about deed formalities, it’s worth reviewing practical guidance on Executed As A Deed before you commit to that structure.

2) Who Can Sign And What Authority They Need

Execution clauses often clarify that each signatory confirms they have authority to sign for the party they represent.

This matters most where the party is a company. For companies registered under the Companies Act 2006, there are specific ways a company can execute documents (for example, via two authorised signatories or a director in the presence of a witness, depending on the document and circumstances). Different rules can apply for LLPs, partnerships, overseas companies, and entities incorporated outside Great Britain.

In small businesses, signing authority is sometimes informal (eg “our ops manager signs supplier agreements”). That can work operationally, but if authority is ever challenged, it’s helpful if your contract and internal records clearly support who is signing and why they have authority.

It’s also common to document authority through board approval or internal governance steps, supported by Board Minutes where appropriate.

If your business regularly has staff sign agreements on behalf of directors (or the company), it’s worth tightening up signing authority so you don’t create accidental risk.

3) Witnessing Requirements

Witnessing comes up most often with deeds and certain company signing methods.

A good execution clause doesn’t just say “signed with a witness” - it makes it clear when witnessing is required and ensures the signature block includes:

• the witness’s signature;
• the witness’s name and address; and
• the correct attestation wording (eg “in the presence of”).

Small detail, big consequences: the witness should usually be independent (not a party to the contract). In many situations, the witness must be physically present when the signatory signs (including for many deeds), so avoid assuming remote witnessing is acceptable unless you’ve checked the specific rules that apply to the document and jurisdiction.

If you’re not sure who qualifies, Who Can Witness A Signature is a good reference point.

4) Counterparts (Signing In Separate Copies)

Signing “in counterparts” means each party can sign a separate identical copy, and together they form one agreement.

This is especially useful when:

• signing is remote;
• there are multiple signatories; or
• the contract needs to be finalised quickly without circulating one physical original.

Without a counterparts clause, you can still often manage execution practically, but including one reduces arguments about whether the parties signed “the same document”.

5) Electronic Signatures And Delivery

Most small businesses now sign agreements electronically. That’s normal, and many commercial contracts can be validly e-signed.

Still, your execution clause should match how you do business. For example, it may specify that:

• signatures may be applied electronically;
• a PDF copy is acceptable; and
• delivery by email constitutes delivery of the executed document.

Some documents are more sensitive (especially deeds and certain property-related documents), and the validity of e-signing can depend on the document type and the formalities that apply. If the deal is important, it’s worth getting tailored advice on the execution method.

How To Draft Execution Clauses For Common Business Scenarios

Execution clauses should be practical. The goal isn’t to add legal fluff - it’s to make it easy for the parties to sign correctly and hard for anyone to dispute later.

Below are common scenarios small businesses run into, and what your execution clause should address.

Scenario A: You’re Signing A Standard Services Agreement (Not A Deed)

If the agreement is a normal contract, the execution clause may be short, with signature blocks for each party.

Common drafting points:

• make sure each party’s correct legal name is used (especially if trading names are involved);
• include the signatory’s name and title (so it’s clear they’re signing for the business);
• consider adding a counterparts clause if signing remotely.

Many contracts in this category will also include core risk allocation provisions (for example, caps on liability). It’s worth making sure those clauses are consistent with the rest of the contract and commercially workable, including any limitation of liability clauses you rely on.

Scenario B: Your Company Needs A Director (Or Two People) To Sign

This is where businesses often get caught out: someone signs “for the company”, but later you find out the counterparty expected two directors, or one director plus a witness, or a company secretary (where applicable).

Your execution clause can reduce confusion by being explicit about how each company may execute.

While the exact drafting should be tailored, typical options for companies incorporated under the Companies Act 2006 include wording that allows execution by:

• two authorised signatories; or
• a director in the presence of a witness who attests the signature.

If you’re managing a lot of agreements, having a consistent internal approach to signing (and keeping records of approvals) will make operations smoother and reduce risk.

Scenario C: The Document Is “Executed As A Deed”

If you’re using a deed, your execution clause should clearly say it’s a deed and specify how it is to be executed.

This is not a box-ticking exercise. If you intend a deed but sign it like a standard contract (or your witnessing is wrong), you can create enforceability problems.

Practical tip: align three things carefully:

• the wording in the body of the document (does it clearly say it’s a deed?);
• the execution clause (does it set out deed execution mechanics for the relevant jurisdiction?); and
• the signature blocks (do they use deed wording and have witness fields where needed?).

For a deeper practical view, Executing Contracts And Deeds is a useful reference when you’re deciding the right method.

Scenario D: You’re Signing Remotely, Fast (Email PDFs, Multiple Parties)

When speed matters, execution clauses should support how deals are actually done.

Consider including:

• counterparts wording (so each party can sign separately);
• electronic signature wording (so nobody insists on wet ink at the last minute); and
• delivery wording (so emailing a signed PDF counts as delivery).

This is especially helpful if you work with overseas suppliers or clients, or if your team signs from different locations.

Common Mistakes With Execution Clauses (And How To Avoid Them)

Execution issues often pop up at the worst time: when a deal is about to close, or when a dispute has already started.

Here are some of the most common mistakes we see small businesses make with execution clauses, and the easy fixes.

Mistake 1: Using The Wrong Party Name (Or A Trading Name)

If the contract lists “ABC Plumbing” but your legal entity is “ABC Plumbing Ltd”, that mismatch can create confusion later about who is actually bound.

Fix: use the correct registered name and number for companies (and ensure the address and jurisdiction details are consistent). If you trade under a different name, you can reference it, but don’t replace the legal entity name with the trading name.

Mistake 2: Letting “Whoever Is Available” Sign

If the person signing doesn’t have authority (or the other side argues they didn’t), you may face enforceability disputes, or internal governance issues.

Fix: set clear internal signing rules and match them to the contract’s execution clause. If you need someone to sign on behalf of the director, document it properly and keep the authority trail tidy.

Mistake 3: Forgetting Witness Details (Or Witnessing Incorrectly)

A witness signature block that’s half-complete (no name/address), or witnessing done remotely without a proper basis, can cause real headaches for deeds.

Fix: make witnessing requirements clear, and make it easy for the witness to complete all details. If the document is important, don’t improvise execution.

Mistake 4: No Counterparts Clause For Multi-Party Deals

If multiple parties sign different PDFs, you want the contract to clearly state that those separate signed copies still form one agreement.

Fix: include a short counterparts clause and a clear delivery clause.

Mistake 5: Treating Execution As Separate From The “Real” Contract Terms

Execution is part of risk management. For example, if your contract includes a limitation of liability cap or requires a certain notice method, you want the signature mechanics to be equally solid, so the agreement is actually enforceable as intended.

Fix: draft the execution clause as part of the contract’s overall structure, not as an afterthought.

Key Takeaways

• Execution clauses are the parts of a contract that explain how the agreement must be signed, by whom, and with what formalities (eg witnesses, counterparts, deeds).
• Getting execution right helps prevent disputes about whether a contract is binding, especially where a signatory’s authority is questioned.
• If a document is intended to be executed as a deed, the execution clause and signature blocks must follow the deed formalities that apply in the relevant UK jurisdiction, otherwise enforceability risks can arise.
• For remote signing, it’s usually sensible to include counterparts, electronic signature, and delivery wording so the agreement can be completed smoothly.
• Common execution mistakes include using the wrong party name, missing witness details, or having the wrong person sign - all of which are avoidable with clear drafting.
• If your contract is high value, long-term, or strategically important, it’s worth having a lawyer tailor the execution clause to your exact circumstances rather than relying on generic wording.

If you’d like help drafting or reviewing execution clauses (or making sure your contracts are signed correctly), you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.