Sidney James (Sgt. Frank Wilkins)Kenneth Williams (PC Stanley Benson)Eric Barker (Inspector Mills)Kenneth Connor (PC Charlie Constable)Charles Hawtrey (PC Timothy Gorse)Leslie Phillips (PC Tom Potter)Joan Sims (WPC. Gloria Passworthy)Hattie Jacques (Sgt. Laura Moon)Shirley Eaton (Sally Barry)Cyril Chamberlain (Thurston)Joan Hickson (Mrs. May)Irene Handl (Distraught Mother)Terence Longdon (Herbert Hall)Jill Adams (WPC Harrison)Freddie Mills (Jewel Thief)Brian Oulton (Store Manager)Victor Maddern (Detective Sgt. Liddell)Joan Young (Suspect)
With a flu epidemic running rife, three new bumbling recruits are assigned to Inspector Mills police station. With help from Special Constable Gorse, they manage to totally wreck the operations of the police force and let plenty of criminals get away, even before they arrive at the station. They all have to prove themselves or else they'll be out of a job and Sergeant Wilkins will be transferred. Sub-plots include romances between Wilkins and Moon, Constable and Passworthy.