From CAP804 (Section 4, Part A, page 6):
(b) Aeroplanes, helicopters, powered-lift, airships and sailplanes. A pilot shall not
operate an aircraft in commercial air transport or carrying passengers:
(1) as PIC or co-pilot unless he/she has carried out, in the preceding 90 days, at
least 3 take-offs, approaches and landings in an aircraft of the same type or
class or an FFS representing that type or class. The 3 take-offs and landings
shall be performed in either multi-pilot or single-pilot operations, depending
on the privileges held by the pilot; and ... (goes on to PIC at night)