I was born in Lagos, Nigeria January 1962. July 1962 my mother and I joined my father who had travelled to London for studies late 1961.
They were both Nigerian citizens. Both are now deceased.
I have a sister who will be 50 this December and 3 surviving brothers. One had passed away in an accident in 1983. All were born in the U.K.
I understand from some research I did in the mid-90s that I was entitled to claim British citizenship up until my 18th birthday in 1980.
My parents had filled out an application for a British Passport in May 1971, had it signed by our then G.P Dr. P Roy, but then had a dispute over who would be responsible for the 2 pounds sterling passport fee.
I still have the form! I also have the entrance clearance papers for my arrival with my mother in July 1962.
I attended schools in West London and later in Derbyshire in the 80s.
I am very comfortable with the British way of life and don't reckon I will have a problem with any settlement tests.
Don't know if any of this helps.