Ursula Andress was voiced by Nikki Van der Zyl, the same actress who dubbed her voice in James Bond 007 jagt Dr. No (1962).
Peter Cushing and Bernard Cribbins spent a day at Chessington Zoo learning to ride camels. They bonded over this and a mutual love of birdwatching.
Following this film's success, Hammer was keen to reteam Ursula Andress and John Richardson for Eine Million Jahre vor unserer Zeit (1966), but Andress refused, and the role went to Raquel Welch.
John Richardson and Ursula Andress had an affair that continued for several months after filming wrapped. She eventually left him for Jean-Paul Belmondo.