Information may be supplied under section 20 of the Immigration and Asylum Act 1999 (c. 33) (supply of information to Secretary of State) for use for the purpose of —
determining whether an applicant for naturalisation under the British Nationality Act 1981 is of good character;
determining whether, for the purposes of an application referred to in section 41A of the British Nationality Act 1981, the person for whose registration the application is made is of good character;
determining whether, for the purposes of an application under section 1 of the Hong Kong (War Wives and Widows) Act 1996, the woman for whose registration the application is made is of good character;
determining whether, for the purposes of an application under section 1 of the British Nationality (Hong Kong) Act 1997 for the registration of an adult or young person within the meaning of subsection (5A) of that section, the person is of good character;
determining whether to make an order in respect of a person under section 40 of the British Nationality Act 1981.