Guidance

Form B(OTA): guidance

Guidance on registering as a British citizen for Irish citizens and certain types of British national.

Documents

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Details

Guidance on registering for British citizenship using form B(OTA).

Use guide B1 if you鈥檙e a British Overseas Territories citizen.

Use guide B2 if you have lived in the UK for 5 years and you鈥檙e a:

  • British Overseas Territories citizen
  • British National (Overseas)
  • British Overseas citizen
  • British subject
  • British protected person

Use guide B3 if you鈥檙e an Irish citizen.

Updates to this page

Published 22 March 2019
Last updated 22 July 2025 show all updates
  1. The form B(OTA) guidance has been split into 3 guides, following the creation of a new route to citizenship for Irish citizens.

  2. Updated the section on good character.

  3. Updates to the guidance, including how to prove being free from immigration restrictions, evidence of identity, travel after submitting an application, citizenship ceremonies and returning BRPs.

  4. Updated the sections on how to prove being free from immigration restrictions, evidence of identity, travel after submitting an application, citizenship ceremonies, returning biometric residence permits and citizenship-related queries.

  5. Amended to reflect that a biometric residence permit can be used for 18 months from the date of expiry.

  6. Updated Form B(OTA): guidance to update the section on 'Citizenship ban' to reflect changes as a result of the Illegal Migration Act 2023.

  7. Document format and style updated. Outdated information removed or updated accordingly. References and links to fees updated.

  8. Guidance updated to reflect changes introduced by the Illegal Migration Act 2023 and revisions to the sections on good character, lawful residence and freedom from immigration time restrictions.

  9. The guidance has been amended to reflect the changes the Nationality and Borders Act 2022 has made to the requirements for British nationals registering as a British citizen based on a period of residence in the UK.

  10. Added accessible version of guide.

  11. First published.

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