The last theatrical movie of Sir Ralph Richardson (Uncle Willie), Allan Cuthbertson (General Barrington), and Edward Duke (Nigel).
Three knighted actors appeared in this movie: Sir Ralph Richardson, Sir John Gielgud, and Sir John Standing.
This was the first movie to require Sir John Gielgud to speak in an accent not his own. He played an American evangelist from the Deep South. He received tutoring in the accent from the veteran American voice coach Robert Easton, but did not get along with him very well.