E J Fancey productions occupied a space on a quality scale somewhere between educational films and home-movies. While US budget movie-makers had a knack of doing a lot with just a little. E J Fancey had a knack of making very little look even less.
So its a shame that this group of entertainers who were already popular on radio as The Goons, and later went on to better things should have this as part of their legacy.
Who were the Z Men? I'd never known but saw that they feature in another disappointing '50s army comedy "You Lucky People" - starring Tom Trinder in his last film. I see from Wikipedia that they were British army soldiers and officers who'd served in WW2 and became a reserve to be recalled if needed.