Dem.., the Mk3 was easier to start ,being electric,rather than the `cartridge` start on the Mk7(carry plenty of sixpence coins ,as you`ll probably run out of safety discs);Much easier on Mk9/10...
DS was my instructor at Ternhill and remember doing a L/Level Tac.navex around Oswestry when he spotted some`activity` behind some bushes on a hillside,took control and approached from a different direction for a closer look,putting a couple`s afternoon session to an end...! bit of a `poacher turned gamekeeper` when he went to the CAA..`