15.—(1) Subject to regulations 16 and 22(1), the Secretary of State must issue a residence permit to a qualified person on application and production of—
(a)a valid identity card or passport issued by an EEA State; and
(b)the proof that he is a qualified person.
(2) Subject to regulation 22(1), the Secretary of State must issue a residence permit to a family member of a qualified person (or, where the family member is not an EEA national, a residence document) on application and production of—
(a)a valid identity card issued by an EEA State or a valid passport;
(b)in the case of a family member who required an EEA family permit for admission to the United Kingdom, such a permit; and
(c)in the case of a person not falling within sub-paragraph (b), proof that he is a family member of a qualified person.
(3) In the case of a worker, confirmation of the worker’s engagement from his employer or a certificate of employment is sufficient proof for the purposes of paragraph (1)(b).