United Kingdom - Passport & Nationality - British Citizenship - Pre 49 Birth Colony
A person born in a former British Colony may have a potential claim to British nationality. If the candidate does not have the Right of Abode, then a claim to British Overseas Citizenship (known as a BOC) may exist.
A successful application will have to rely on both the applicant and the relevant parent not suffering from the Automatic Loss provisions that were enacted upon Independence of the former Colony. The list of British Colonies excludes those territories given wide powers of self-governance and control over Foreign Policy. So this excludes South Africa, Australia, New Zealand, Canada, India, Ceylon and Southern Rhodesia.