13 Issue of a biometric immigration document
1 The Secretary of State may issue a biometric immigration document to a person who has applied in accordance with regulation 3, provided the Secretary of State has decided to grant limited leave to remain to the person.
2 A biometric immigration document begins to have effect on the date of issue.
3 A biometric immigration document ceases to have effect on one of the dates specified in paragraph (4), whichever date occurs earliest.
4 The specified dates are —
(a) the date that the person’s leave to remain ceases to have effect, including where the leave to remain is varied, cancelled or invalidated, or is to lapse;
(b) in the case of a biometric immigration document which was issued to a person aged eighteen or over, the date after the expiry of ten years beginning with the date of issue; or
(c) in the case of a biometric immigration document which was issued to a person aged under eighteen, the date after the expiry of five years beginning with the date of issue.