Daily, before flight, a Check A must be completed in order to validate the C of A. The Check A is listed in CAP411 the LAMS Schedule.
Item A1 states: If the aircraft has not been regularly used, ensure before resumption of flying that:
(a) Either (i) the engine has been turned weekly or fortnightly
or (ii) the manufacturer's recomendations have been complied with.
(b) Compression appears normal when the engine is turned by hand