The part of Theotocopulos was originally filmed with Ernest Thesiger in the role. The scenes were re-shot with Sir Cedric Hardwicke because the producers wanted a better-known actor with more "marquee value".
Music recorded at The Scala Theatre, Charlotte Street, London, England UK
The date on the newspaper in the scene in 1966 when the war ends is 21st September 1966--which would have been the 100th birthday of H.G. Wells.