I do recall that security film:
RAF airman hitch-hiker decides to clam up when asked too many questions by a driver and is dropped off at Wittering.
Cheeky little WRAF who says "I'll do it any way you like, sir"
to the Sqn Cdr about some document which needs re-typing.
Baby sitter and boyfriend who dresses up in her dad's RAF uniform, spilling S&C documents from dad's briefcase.
Suspicious 'bird watchers' observing Harrier exercise.
But I'm not sure whether it featured Richard O' Sullivan. He certainly appeared in a FS video; after oversleeping and missing breakfast, he enters the runway without clearance forcing an F-4 to go-around. There was another movie where someone talking about FAC work asks him if he flies Hunters. "No, Harriers actually" came the reply in a rather superior (and remarkably accurate) tone - I wonder how he knew?