Act 2003. Furthermore, in spite of the fact that most of this Act has been repealed by the British Nationality Act 1981, the acquisition of new categories of British nationality created by the 1981 Act is often made dependent on one's nationality status prior to the effective date of the British Nationality Act 1981. This therefore means that many of the original provisions of the British Nationality Act 1948 are still relevant today. See also History of British nationality law British nationality law Immigration Act References British nationality law Immigration law in the United Kingdom United Kingdom Acts of Parliament 1948