 If a person has a British mother and was born before 1984 then under section 2(1)(b) of the Immigration Act 1971 they are considered to have the same rights as a British citizen.The right-of-abode is conferred automatically on such persons and they are issued a certificate on their passport.Under exceptions in section 7 of the Immigration Act 1971, a long-term resident Irish or Commonwealth citizen in the UK is granted immunity from deportation, similar to British or other Commonwealth citizens who hold right-of-abode by virtue of a residency term of at least five years in the United Kingdom.