Company Seal in the UK: Do You Need One and How to Use It

If you’ve come across the term “company seal” while setting up or running your company, you’re not alone. In the UK, the idea of stamping documents with a metal embosser feels old-school - and it is.

So, do small businesses actually need a UK company seal today? Short answer: usually not. But there are still situations where a seal is helpful (and sometimes expected) - especially if you trade internationally or execute formal deeds.

In this guide, we break down what a company seal is, when it’s used, how UK law treats it, and the practical steps to keep your documents legally watertight - with or without a seal.

What Is A UK Company Seal?

A UK company seal (also called a “common seal”) is a physical device that embosses your company’s name onto a document. Traditionally, applying the seal was how a company “executed” (formally signed) certain documents, particularly deeds.

In modern practice, most companies don’t use a physical seal at all. The Companies Act now allows documents to be validly executed by authorised signatories without a seal, which is simpler and faster for day‑to‑day business.

Still, you’ll see “company seal UK” or “company seals UK” referenced in older precedents or by overseas counterparties. Knowing how they work - and the alternatives - helps you avoid delays when a document needs to be signed and recognised across different jurisdictions.

Is A Company Seal Required Under UK Law?

No - a company seal is not required for UK companies. The Companies Act 2006 allows a company to execute documents without a seal by having them signed by authorised signatories. That change means you can run your business without ever ordering a seal.

In practical terms, this means:

• For contracts, a company can sign through an authorised individual (typically a director) in line with your internal signing rules.
• For deeds, the execution formalities are stricter, but you can still execute without a seal if you follow the correct signing process (more on this below).
• If you decide to use a seal, you must apply it in the way your Articles allow and record its use properly.

If you need a refresher on how formal signing works generally, it’s worth reviewing the core rules around executing contracts and deeds in England and Wales.

When Might A Company Seal Still Be Useful?

Even though a company seal isn’t compulsory in the UK, there are situations where keeping one on hand can save time and help smooth deals:

• International counterparties: Some overseas banks, registries or counterparties still expect to see a company seal on deeds, share transfers or corporate certificates.
• Property and banking documents: A few institutions’ internal policies prefer a seal on certain deeds or security documents, even where it’s not legally required.
• Share certificates and corporate records: A seal can add formality to certificates or board minutes if your Articles or internal policies contemplate it.
• Legacy precedents: If you’re dealing with older templates that specify sealing, it may be quicker to use a seal than renegotiate the execution wording.

The key is to treat a seal as optional equipment - helpful in edge cases - rather than your default approach to signing.

How To Execute Documents Without A Company Seal

Most small companies will execute documents without a seal. Here’s how to keep things compliant and efficient.

Contracts (Not Deeds)

Everyday commercial contracts can be signed by an authorised signatory on behalf of the company. Make sure the person signing has clear authority in your internal rules and on the face of the document. If you’re unsure who can sign what, brush up on signing authority and put simple approval rules in place.

It’s also common to be asked whether a contract is enforceable if someone forgot to sign the final version. That’s risky territory - see the guidance on unsigned contracts before you rely on a handshake or email trail.

Deeds (Higher Formality)

Deeds are used when the law or the parties want extra formality - for example, transferring property or granting a power where no consideration is paid. The signing rules are stricter than for ordinary contracts. If you’re weighing up whether your document should be a deed or an agreement, this overview of the difference between a deed and an agreement is a helpful starting point.

To execute a deed without a seal, UK companies typically sign either:

• by two authorised signatories (often two directors), or
• by a single director in the presence of a witness who attests the signature.

That last point raises a common question: who can witness? The witness needs to be independent, over 18 and physically present when the director signs. For more detail, check when witnessing deeds works - including practical tips on choosing a suitable witness.

Electronic Signatures And Remote Execution

Electronic signatures are widely accepted in the UK for most contracts and, in many cases, for deeds if the witnessing is done properly. If you’re executing remotely, follow the current best practice for electronic witnessing of documents to avoid validity challenges later.

If you opt to use a physical company seal on a deed, be aware that applying a seal normally requires a wet‑ink process and adherence to any attestation rules in your Articles.

Governance And Practical Steps For Using A Company Seal

If you decide a company seal makes sense for your business - whether for international transactions or formal corporate records - set clear governance from day one. This keeps your execution process clean and prevents disputes about authority.

1) Check Your Articles Of Association

Your Articles usually set out whether the company has a common seal and how it must be used. If you want to adopt, retire or change the rules around a seal, you may need to amend your Articles. This is a good time to review your broader governance too - if your template Articles are out of date, consider a tailored refresh via professionally drafted Articles of Association.

2) Authorise Who Can Use The Seal

Even if your Articles allow for a seal, you should pass a board resolution setting out who has custody of the seal, how it’s stored, when it may be used and who must be present when it’s affixed. If you want a head start on wording and board formalities, a simple Directors’ Resolution can help document those approvals clearly.

3) Keep A Seal Register

Maintain a short register with the date the seal is used, the document details, the people present and where the original document is kept. This audit trail is helpful if you ever need to prove proper execution or reconstruct a deal file.

4) Train Your Team On Execution Options

Make sure your leadership team and anyone who sends out contracts knows when to use ordinary signatures versus deeds and what the witnessing rules are. A quick internal guide pointing to your house rules and this practical note on executing contracts and deeds can prevent last‑minute signing panics.

5) Keep Deed Processes Tight

When using deeds, ensure the correct attestation wording appears beneath the signature blocks and that witnesses sign in the right place. If you’re not sure which format to use or whether your document needs to be a deed in the first place, get tailored advice early. Cutting corners with execution is a common source of disputes.

Common Pitfalls And Quick Fixes

• Out‑of‑date precedents: If a template insists on a seal, either apply your seal (if you have one) or update the execution clause to the modern, no‑seal method with the other side’s agreement.
• Unclear authority: Avoid “assumed” authority. Put simple, written signing rules in place so counterparties and staff know who can bind the company. If you’re unsure, refresh your understanding of signing authority.
• Witnessing mishaps: Don’t use related parties or colleagues as witnesses where independence is required. Cross‑check the rules on witness eligibility before you finalise.
• Electronic deeds done wrong: If you’re signing remotely, follow the steps for electronic witnessing - it’s not just a DocuSign click for deeds.

If this feels like a lot to remember, don’t stress - a short, tailored execution policy and updated Articles will cover most day‑to‑day scenarios for a small business.

Common Mistakes And FAQs About Company Seals

Do We Need A Company Seal In The UK?

No. Most companies execute documents without a seal. A seal is optional.

Is A Document Invalid If We Didn’t Use Our Seal?

Not if it was properly executed under the Companies Act signing rules. The presence of a seal isn’t what makes a document valid - proper execution does.

When Should We Consider Using A Seal?

Use a seal if a counterparty or foreign registry insists, or if your internal policy prefers sealing certain corporate certificates. Otherwise, modern signature blocks are usually fine.

What’s The Difference Between A Deed And An Agreement?

They serve different purposes and have different formalities and limitation periods. If you’re unsure which to use, start with the overview of the difference between a deed and an agreement and get advice on your specific deal.

Can We Sign Everything Electronically?

Most contracts, yes. Deeds can also be executed electronically if the witnessing is handled correctly. Follow current best practice for electronic witnessing and keep clean records.

What If Someone Signed Without Authority?

This is where internal rules and clear documentation matter. If you need to tighten your governance, update your Articles of Association and board approvals so counterparties can rely on signature blocks without question.

Key Takeaways

• A company seal UK is optional - not a legal requirement. Most small businesses can execute documents validly without using a physical seal.
• For deeds, follow higher formalities: two authorised signatories, or one director in the presence of an independent witness. Keep your attestation wording and witness process tight.
• Electronic signatures are widely acceptable. For deeds, follow best practice for electronic witnessing to avoid challenges.
• If you do keep a company seal, set governance: update your Articles of Association, assign custody, keep a seal register and document approvals with a clear Directors’ Resolution.
• Don’t let execution derail deals. Have a simple internal execution policy, ensure the right people have authority, and follow the rules for executing contracts and deeds.
• If you’re unsure whether your document should be a deed or an agreement, or whether you need a seal for a cross‑border transaction, get tailored advice early to prevent delays.

If you’d like help setting up execution rules, updating your Articles or deciding whether to adopt a company seal, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no‑obligations chat.