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Why a Solicitor Isn’t Enough: Understanding the Role of a Notary Public in International Law


Natalie Mills - June 8, 2026 - 0 comments

There is a common assumption that a lawyer can handle any legal scenario, regardless of where the paperwork is going. When people or business owners in the UK face a legal task, their first instinct is to call their family solicitor or their company’s commercial legal team. This works perfectly for everyday domestic matters. However, issues arise when paperwork crosses borders.

Discovering that a long-standing, trusted solicitor cannot execute international paperwork often happens at the last minute. This causes genuine frustration and unexpected delays. You might be a business owner trying to establish a new commercial branch overseas, or an individual trying to sell a villa in Spain.. In these instances, you’re likely to be told that a solicitor’s signature and stamp are insufficient.

Understanding why this limitation exists requires looking at how different legal roles are recognised across different countries. The reality is that international law demands a specific type of legal officer, known as notary public.

The Foundational Difference: Domestic Law vs. International Recognition

A solicitor is qualified and regulated to practice the domestic law of England and Wales. They advise clients, draft contracts, manage property transactions, and represent individuals in court. Their authority is bound by domestic geography.

In England and Wales, a notary is a qualified lawyer appointed by the Court of Faculties of the Archbishop of Canterbury. While a solicitor’s primary duty is to protect the specific interests of their client, a notary’s primary function is to act as an independent, public officer of the law. Their duty is to the inherent truth and accuracy of the transaction itself, rather than to one single party.

 It’s common to encounter professionals who hold both titles, working within firms that offer both legal and notary services. However, when these professionals act as a notary, they are operating under a completely separate legal jurisdiction.

A signature as a solicitor carries weight within the UK, but it’s their seal and signature as an appointed notary public that holds international recognition. Foreign governments, courts, and corporate registries trust the notary because of this strict independence and specialised global authority.

Why a Solicitor’s Witness Fails Overseas Contracting

When a foreign institution demands that a document be notarised, they are looking for a guarantee of what is known as legal capacity and authority.

If a standard solicitor witnesses a signature on a commercial contract or a power of attorney, they are usually confirming that they saw a person write their name on the paper,acting as an advocate for their client.

A notary public must perform a deeper set of checks before they can apply their official seal. When a notary authenticates a document for an international transaction, they are legally certifying several critical facts to the foreign recipient:

  • Identity Verification: The notary must confirm that the person signing is exactly who they claim to be, using official government identification.
  • Legal Capacity: The notary assesses whether the individual is mentally competent, acts voluntarily, and understands the legal consequences of the document they are signing.
  • Corporate Authority: If a document is signed on behalf of an international company, the notary must verify that the business is legally active and that the individual signing has the actual authority to bind the company to an agreement.

Because a notary public faces strict penalties for any inaccuracies, foreign authorities accept their seal as proof that the document is genuine and properly executed. A solicitor’s domestic stamp does not offer these specific international assurances.

The Multi-Layered Validation Process

Different countries require different levels of verification before a UK document can be used within their borders. This then progresses through three distinct levels, depending on the destination country:

1. Notarisation

The notary public reviews the paperwork, verifies identity and authority, and affixes their signature and unique registry seal. For some countries, this single step is sufficient.

2. The Apostille

Many documents require further legalisation by the UK Government. This is handled by the Foreign, Commonwealth & Development Office (FCDO). The FCDO checks the document and attaches an apostille certificate. The FCDO does not verify the content of your document, they verify the signature and seal of the notary public against their official records. 

3. Consular Legalisation

If you are sending paperwork to a nation that is not a member of the Hague Convention, an apostille is insufficient. The document must go through a third stage called consular legalisation. This requires submitting the notarised and apostilled paperwork to the embassy or consulate of the destination country. The consular staff will verify the FCDO’s apostille before adding their own final stamp of approval.

When International Law Requires a Notary

1) Corporate and Commercial Requirements

International companies often hit administrative difficulties when expanding or trading across borders. If a UK business wants to open a foreign bank account, establish an overseas subsidiary, or enter into a cross-border contract with an international partner, they must submit corporate paperwork.

Documents such as Certificates of Incorporation, Memorandums and Articles of Association, and Certificates of Good Standing must be formally authenticated. An international notary public verifies these documents directly with Companies House, confirming the company’s legal existence before certifying them for foreign registries.

2) Personal and Property Transactions

On a personal level, buying or selling property abroad is a primary reason people require a notary. If you are selling a property in another country and you aren’t able to travel to sign the final paperwork in person, you will need to execute a Power of Attorney (POA) to allow a local lawyer overseas to complete the sale on your behalf.

To make this POA valid under foreign law, it must be signed in the presence of a notary public who can certify your capacity to sell. The same rule applies to handling foreign wills, administering overseas estate probate, or submitting a certified UK degree certificate to secure a work permit in another country..

Saving Time and Expense in International Matters

The legal systems of different countries can be vastly different. Assuming a standard solicitor can handle international authentication usually results in documents being sent back, missed corporate deadlines, and wasted money.

Recognising that a notary public holds a separate, globally respected legal faculty allows individuals and businesses to prepare their paperwork correctly from the beginning. Whether you are dealing with an international commercial contract or a personal overseas property sale, ensuring your documents carry the correct seal is best the way to guarantee they will be accepted under international law.If you have documents that need to be prepared for use overseas, getting clear guidance early makes a significant difference. Contact the team at MSC Notaries by calling 0208 907 2699 or emailing info@mscnotaries.com to discuss your requirements at our Central London or Harrow offices.

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