http://www.legislation.gov.uk/ukpga/1981/61 British Nationality Act 1981 British Nationality Act British Nationality Act 1981 http://www.legislation.gov.uk/ukpga/1981/61 British Nationality Act 1981 "British Nationality Act 1981" http://www.legislation.gov.uk/ukpga/1981/61 http://www.legislation.gov.uk/ukpga/1981/61 http://www.legislation.gov.uk/ukpga/1981/61 thirty years British Nationality Act of 1981 can be taken in secret http://www.legislation.gov.uk/ukpga/1981/61 Section 40(4) of the British Nationality Act 1981 "British Nationality Act 1981" British Nationality Act British Nationality Act 1981 "British Nationality Act 1981" http://www.legislation.gov.uk/ukpga/1981/61 www.legislation.gov.uk/ukpga/1981/61 British Nationality Act 1981 http://www.legislation.gov.uk/ukpga/1981/61 British Nationality Act 1981 (c. 61) British Nationality Act 1981 British Nationality Act 1981 (c. 61) British Nationality Act 1981 British Nationality Act, 1981, c. 61, § 1 thirty years «British Nationality Act 1981» British Nationality Act 1981