Trivia: Wilfrid Brambell has a cameo role as Mr. Pullen in this film. During Brambell's appearance, you can hear the 'Steptoe & Son' theme, the TV series in which he appeared.
Trivia: When the clarinet player says "The next dance will be a general excuse me" at the hospital party, the music the band plays is the theme tune to the film "Carry On Cabby."
Trivia: Shakira Baksh, who has an uncredited role as "Scrubba", later married the actor Michael Caine.
Trivia: Eric Rogers, who provided the music for most of the Carry On films, appears as the clarinet player at the hospital party.
Trivia: Bob Todd, who would later become a long-time regular on The Benny Hill Show, has an uncredited appearance as the patient whose stomach is blown up by the breathing apparatus during the scene where Dr Nookey tampers with the hospital fuse box.