So happy to hear after a BOTC campaign to amend British nationality law via the British Nationality and Borders Act 2022, the UK Home Office UKVI now has two new routes to registration for British Overseas Territories and British Citizenship for children (who are now adults):
You would have become a BOTC at birth if your mother had been married to your natural father and: You were born outside an OT before 1st July 2006 to a BOTC father; or
You were born inside an OT on or after 1st January 1983 and before 1st July 2006 to either a BOTC or settled father or
You could have become a British Overseas Territories citizen (BOTC) under existing registration provisions had your parents been married.
Application Guidance and Forms forms are available on the official UKVI Home Office website.