Form
Application to register as a British citizen: form B(OS)
Form to apply to register as a British citizen if you have certain other types of British nationality.
Documents
Details
Use this form if you are a British Overseas citizen, British subject, British protected person, or British National (Overseas) and have no other citizenship or nationality. You should also read the guidance notes.
Published 1 June 2010
Last updated 4 December 2015 + show all updates
Last updated 4 December 2015 + show all updates
- Updated guidance.
- Revised guide with biometric details and where to send applications
- Updated guidance and form
- First published.