Paragraph 17
In the case of an applicant who claims to be a British citizen, who does not currently hold a valid United Kingdom passport describing the applicant as a British citizen, who was not born or adopted in the United Kingdom, who has not been issued with a certificate of registration or naturalisation and who is a citizen of a British Overseas Territory -
(a)
the applicant’s birth or adoption certificate in a form which contains details of the parents, or, as the case may be, adoptive parents of the applicant, in so far as they are included on the relevant register; and
(b)
the applicant’s valid passport describing the applicant as a citizen of a British Overseas Territory.