Redworth, played by Michael Trubshawe, briefly refers to his unseen housekeeper as a "Mrs. Niven". In real life, Trubshawe was an extremely close friend of David Niven's, and the latter tried to mention Trubshawe's name in every film he appeared in (unless Trubshawe was actually in the film with him). This is a rare example of Trubshawe doing Niven the same favor.
This was the first time that Kenneth More got star billing in a film; he was second-billed to James Donald.
As of December 2024, Jean Lodge (at the age of 97) is the last surviving cast member of this film.