Duplicates of Certificates of Naturalisation granted in the UK by the Secretary of State for the Home Department from 1870 under the Naturalisation Act 1870, the British Nationality and Status of Aliens Act 1914, Burma Independence Act 1947, British Nationality Act 1948, Immigration Act 1971, and Immigration Act 1981; and of Imperial Certificates of Naturalisation granted in British Possessions overseas between 1915 and 1949. It does not include duplicates of certificates granted in the self governing Dominions of Australia, Canada, Newfoundland, New Zealand and South Africa. Certificates issued under the Acts referred to above show the name, address, trade or occupation, country of origin, and the names of spouse and children if applicable, with the exception of those issued under the Immigration Act 1971 and Immigration Act 1981, which do not provide information of parentage. The volumes of declarations contain nominal indexes.