Sir Alec Guinness only made this movie as a favor for his friend, director Charles Frend. He later referred to this movie as "wretched".

The last movie that Sir Alec Guinness made for Ealing Studios.

Although this is an Ealing Studios movie, it was actually shot at the studios at Borehamwood, as the Ealing facility had closed down.

Sir Alec Guinness played multiple roles in this movie, as he did in his first movie for Ealing Studios, Kind Hearts and Coronets (1949).

Sir Alec Guinness served in the Royal Navy during World War II.