Provided your mother was not married to somebody else at the time of your birth and provided you have proof that (a) you were born in the UK and (b) that your father had ILR at the time of your birth (ideally his original passport from that time or other documentation stating that he had ILR before the day you were born), you can apply to register as a British citizen using
Form UKF (read the
guidance first).
Keep in mind that you only become a British citizen from the date of the registration certificate and that your British citizenship does not pass on to children who have already been born.
Dier wrote: ↑Sat May 02, 2020 1:13 pm
Wow... I’m so happy right now but before I get too excited does that mean I am entitled to register as a British Citizen even though my father is legally Married to another woman?
Your father's marital status is irrelevant. But if your mother were married at the time of your birth, then the man she was married to would be your legal father, irrespective of who your biological father was. Thence the question.
I am not a lawyer or immigration advisor. My statements/comments do not constitute legal advice. E&OE. Please do not PM me for advice.