Legalisation, Apostille & Notarisation: A Complete UK Guide

Guide

What Is Document Legalisation?

When a UK-issued document needs to be recognised by an authority in another country, that country’s officials cannot simply accept it at face value. Document legalisation is the process of authenticating the signatures, seals and stamps on a UK public document so that foreign authorities will treat it as legally valid.

You will typically need legalisation when applying for residency or citizenship abroad, getting married in a foreign country, purchasing overseas property, participating in foreign court proceedings, or enrolling at a foreign university.

The Apostille Convention

The Hague Apostille Convention (1961) simplified international document authentication. Before it existed, getting a UK document recognised abroad required authentication by the FCDO followed by counter-signing at the relevant embassy. The Convention replaced that chain with a single standardised certificate: the apostille.

As of 2025, there are 129 contracting parties to the Convention, including all EU member states, the United States, Canada, Australia, Japan, India, China, Brazil, and South Africa. If your document is destined for any major Western country or EU member, the apostille route almost certainly applies.

Apostille vs Full Legalisation

The apostille is sufficient only for countries that are parties to the Convention. For non-Hague countries (UAE, Saudi Arabia, Qatar, Kuwait, Egypt, Pakistan, Bangladesh, and others), you need full legalisation — a two-stage process where the FCDO authenticates your document, then the destination country’s embassy counter-signs it.

Full legalisation takes longer, costs more, and requires navigating each embassy’s individual requirements.

Where Does Certified Translation Fit In?

An apostille authenticates the document’s origin — it says nothing about content. If the destination country does not use English, you will also need a certified translation. The relationship between translation and legalisation is sequential:

Standard path (most common): Obtain your UK document → Apply to the FCDO for an apostille → Commission a certified translation of the apostilled document (including the apostille text itself).

Apostilled translation (when specifically required): Commission a certified translation → Have it notarised by a UK notary → Submit the notarised translation to the FCDO for apostille.

FCDO Apostille: Cost and Turnaround

Service	Fee	Turnaround
Standard (postal)	£45 + courier	Up to 15 working days
e-Apostille (digital PDFs)	£35	Up to 2 working days
Restricted Urgent	£100	Same day

Common Mistakes to Avoid

• Sending photocopies — the FCDO works with originals or certified copies only
• Wrong order — attaching a translation before submitting for apostille often causes rejection
• Assuming apostille covers all countries — always check Hague Convention membership first
• Forgetting notarisation — private documents (powers of attorney, translations) typically need notarisation before apostille
• Using non-professional translation — a family member’s translation will not be accepted by foreign authorities
• Leaving it too late — the full chain can take 6-8 weeks; plan well ahead