Paragraph 6
In the case of an applicant who claims to be a British subject with right of abode in the United Kingdom who does not hold a valid United Kingdom passport describing the applicant as a British subject with right of abode in the United Kingdom –
full name of the applicant’s mother,
place of birth of the applicant’s mother (including town and country),
date of birth of the applicant’s mother,
nationality of the applicant’s mother at the time of the applicant’s birth,
date of any marriage between the applicant’s mother and the applicant’s father,
full name of the applicant’s father,
place of birth of the applicant’s father (including town and country),
date of birth of the applicant’s father, and
nationality of the applicant’s father at the time of the applicant’s birth.