For UK citizenship and passport applications, the referee does not fill out a standalone form in isolation. Instead, their information is integrated into the main application process [1][2]. In online applications, the applicant enters the referee's details (name, date of birth, address, profession, contact information) directly into the digital form, after which the system generates a digital referee declaration that the referee must complete and sign [3][2]. For paper applications, a dedicated "Referee Declaration" section exists within the main form (such as Form AN for naturalisation), where the referee writes their full name, address, profession, contact details, and passport number if available, then signs and dates [3][2]. In both cases, the referee must also certify one of your passport photographs as a true likeness [3]. For British citizenship applications specifically, two referees are typically required: one must be a professional person, and the other must be a British citizen passport holder who is either a professional or over 25 [1].