# The British Nationality (General) Regulations 2003, Paragraph 15

Extent: E+W+S+N.I.

An application under section 10(1) of the Act shall contain information showing—
(a) that the applicant renounced citizenship of the United Kingdom and Colonies;
(b) that at the time when he renounced it the applicant was, or was about to become, a citizen of a country mentioned in section 1(3) of the British Nationality Act 1948;
(c) that the applicant could not have remained or become such a citizen but for renouncing it or had reasonable cause to believe that he would be deprived of his citizenship of that country unless he renounced it;
(d) that the applicant possessed the requisite qualifying connection with the United Kingdom immediately before commencement or was married before commencement to a person who possessed the requisite qualifying connection with the United Kingdom immediately before commencement or would if living have possessed such a connection;
(e) that the applicant has not previously been registered under section 10(1) of the Act; and
(f) where the applicant is aged 10 or over, that he is of good character.

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Source: https://www.legislation.gov.uk/uksi/2003/548/schedule/2/paragraph/15 (the official version)
Page: https://openlegislation.uk/british-nationality-general-regulations-2003/schedule-2/paragraph-15
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.