Skip to main content
Form

Application to register child under 18 as British Overseas citizen

Form to register a child under 18 as a British Overseas citizen: form MN3.

Updates to this page

From:
UK Visas and Immigration
Published:
1 December 2012
Last updated:
7 August 2026
Show all updates

  1. Updated the contact details in the guidance.

  2. The declaration has been updated.

  3. Updates made to the good character section in the guidance on registering a child under 18 as a British overseas citizen using form MN3 to reflect policy changes.

  4. Guidance updated to reflect OISC name change to IAA, update 'Citizenship-related queries' section and remove ‘Citizenship ban’ section.

  5. Updated form to replace references to Office of the Immigration Services Commissioner (OISC) with the Immigration Advice Authority (IAA).

  6. Updated the 'citizenship ban' section of the guidance. Added information on how long it takes to get a decision to the 'What you can expect from us' section of the guidance.

  7. Updated Section 4 - Referees and identity.

  8. Updated the guidance document.

  9. Accessible version of the guidance added.

  10. Updated to reflect changes introduced by the Illegal Migration Act 2023.

  11. It is taking longer than usual to process applications because of coronavirus (COVID-19). This will not affect the decision.

  12. Updated form published.

  13. First published.

Documents

Application for registration of a child under 18 as a British overseas citizen: form MN3

PDF, 890 KB, 20 pages

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email alternativeformats@homeoffice.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Guidance on registering a child under 18 as a British overseas citizen using form MN3 (accessible)

HTML

Guidance on registering a child under 18 as a British overseas citizen using form MN3

PDF, 308 KB, 25 pages

Details

Use this form to register a child under 18 as a British Overseas citizen. The child must meet strict requirements, which you can find in the MN3 form guidance.

We are aware this publication may have accessibility issues. We are reviewing it so that we can fix these. Read more about our accessible documents policy.

Sign up for emails or print this page

Related content