According to the book "Butlins in its Prime: Those Golden Years", the holiday camp queen beauty contest was filmed at Butlin's holiday camp at Minehead in Somerset over 3 days at the end of the 1963 season. The girls paraded around the Butlin's outdoor swimming pool wearing sashes bearing the names of the towns they represented, such as "Miss Leeds" and "Miss Blackpool" etc. However in the finished movie this scene clearly shows the sunbathing lawn at Butlin's Bognor Regis camp; there is no pool and the girls do not wear the sashes. For some reason this pivotal scene must have been re-shot before release.
Alexandra Bastedo auditioned unsuccessfully for the role of Shirley Freeman which went to Janette Scott.
Though they didn't appear together in the film, Edmund Purdom had had an affair with Linda Christian (playing herself as a competition judge) when she was married to Tyrone Power, leading to Purdom's messy divorce.
The saxophonist leading the band playing the twist is the late Tubby Hayes, a contemporary of Ronnie Scott's.
Val Guest had been a Hammer Films director, and Janina Faye (the little sister) was a Hammer starlet... but this Rank Production is the first time they worked together.