My father was born in 1962 in England to two British parents. He married my (American) mother in 1991 and I was born in the states in 1994. My sister (born 1996) received her British passport earlier in the year, and I am capable of getting one as well, but I guess I'm confused about the relationship between having a British passport and being a citizen. If I get the passport, does that make me a citizen? Would I be able to work and live in the UK?