Section 4, part A, Paragraph 3 of CAP 804:
(c) Validity period
(1) The successful completion of the theoretical knowledge examinations will
be valid:
(i) for the issue of a light aircraft pilot licence, a private pilot licence, a
sailplane pilot licence or a balloon pilot licence, for a period of 24
months;
(ii) for the issue of a commercial pilot licence or instrument rating (IR), for
a period of 36 months;
(iii) the periods in (i) and (ii) shall be counted from the day when the pilot
successfully completes the theoretical knowledge examination, in
accordance with (b)(2).
(2) The completion of the airline transport pilot licence (ATPL) theoretical
knowledge examinations will remain valid for the issue of an ATPL for a
period of 7 years from the last validity date of:
(i) an IR entered in the licence; or
(ii) in the case of helicopters, a helicopter’s type rating entered in that
licence.
Phil