The Guide to London
and it's section on passports and visas in the UK
helps you acquaint yourself with citizenship. The forums also have several similar threads.
For your specific situation, I went to the UK Border Agency's page on "Who can apply for British citizenship and other forms of British nationality?" - http://www.ukba.homeoffice.gov.uk/briti ... igibility/
. This took me to the section "Children born abroad to parents who are British by descent and who have lived in the United Kingdom in the past" http://www.ukba.homeoffice.gov.uk/briti ... ornabroad/
"This page explains how a child born and living outside the United Kingdom whose parent is a British citizen by descent can meet the requirements to be registered as a British citizen.
A child will have an entitlement to be registered under section 3(2) of the British Nationality Act 1981 if:
they were born outside the United Kingdom; or
they were born after 21 May 2002 outside any of the British overseas territories; and
they were born to parents, one or both of whom are British citizens by descent; and
the parent who is British by descent was born to a parent (the child's grandparent) who was a British citizen otherwise than by descent (or would have been but for their death); and
the parent who is British by descent lived in the United Kingdom at any time before the child's birth for a continuous period of three years*; and
during the period they were living in the United Kingdom the parent was not absent for more than 270 days; and
the application is made before the child's 18th birthday."
It appears that you are 18? It seems that may be a problem. British nationality law is complicated, and you are advised to read the Guide NS or obtain professional advice (such as those registered with the Office of the Immigration Service Commissioner) on your claim before applying for a nationality status certificate using Form NS.
Does anyone else have advice or experience in this area?