How do I register as a British citizen if I am a British national with no other nationality?
This section provides details of how to register as a British citizen by descent if you are:
- a British overseas citizen; or
- a British protected person; or
- a British subject
- a British National (Overseas) (from 13 January 2010).
Registrations should be made using application form B(OS). Before you send us your form, you should ensure that you have read the eligibility section.
Before you make your application for citizenship you should read guide B(OS) - registration as a British citizen. This guide provides full details of the requirements you need to meet and how to complete the application form. You will need to confirm on the application form that you have read and understood the guide.