The song, "Living Doll" by Cliff Richard and The Shadows (as The Drifters) was released as a single (in a different arrangement) as a spin off from this film. It was a British #1, and was the top-selling song of 1959.
The Harrison Marks model Jean Spaul dives into the swimming pool in the scene when the kids break into the Lido late at night. She had to dive into the pool three times - once in a bikini, once wearing a petticoat and once topless. The petticoat was shot for the American market, the bikini for the UK and the topless version for the French.
Reverend Phillips' parish church is St. Stephen's (patron saint of deacons and stonemasons).
The first prominent role for aspiring actress and nude model Marie Devereux. Because of her impressive and ample breast size at a young age, Devereux started her career posing topless right after she turned 16. She soon moved into total nude photography because it paid more. Wanting to be an actress, Devereux took bit parts as hookers and harem girls in several films and shows, until she was cast in this film by Terence Young. That exposed her to more prominent producers and studios, which lead to her being cast by Hammer Studios in "The Brides of Dracula" the next year. It was still a bit part, but it was better-paid and the film was more popular than her previous projects.