Registration as a British Citizen
How can I register as a British Citizen?
If you were born in the UK before the 1st January 1983, you were British by birth and you get the citizenship automatically.
If you do not qualify for British citizenship automatically, you may be eligible to apply for Registration as a British citizen, either by way of an entitlement or on a discretionary basis.
British nationality law explains situations where you can apply for registration as a British Citizen, depending on your circumstances. There are other requirements to be met alongside to be successful in this application.
However, Secretary of State has desecration to waive these requirements, depending your situations.