Dilys Laye burned her hands while sliding down the rope in the gymnasium scene.
Dilys Laye took over the role of Flo Castle at very short notice after the first choice, Joan Sims, was taken ill.
Dilys Laye wore several false hair pieces for the film, which she eventually had completely cut out following completion.
Dilys Laye's dresses were bought in London's west end. She was allowed to keep the items following completion of the film.
The film's premier was held on a cruise ship in Southampton, England.
The first film in the Carry On... series to be filmed in colour.
The phrase, "Turned out nice again", spoken by Doctor Binn after he proposes to Flo, is a catchphrase associated with English comedian, George Formby.
The role of Wilfred Haines was originally intended for Charles Hawtrey, but was re-written for Lance Percival after Hawtrey quit in a dispute with the producer over billing.
The S.S. Happy Wanderer was a life size mock-up, complete with all the features of a real cruise ship.
The set was at Pinewood Studios and was on hydraulics.
There were problems with the exploding cake scene, which caused several re-takes to be done.