This movie had troubles with the U.S. censor, the Production Code Administration, because of the apparent justification of the immoral relationship between the Prince of Wales, played by Sir Peter Ustinov, and Mrs. Fitzherbert, played by Rosemary Harris, because a steward at a gentlemen's club had the manner of a "sex pervert", because the Prince checks the gender of a dog, and because of the use of the word "damn". Changes were made, but the running time remained the same.
MGM bought the rights for this movie from Warner Brothers in 1939, with intentions to star Robert Donat.
The film was chosen for the Royal Film Performance of 1954. Apparently, Queen Elizabeth II was quite amused by Robert Morley's interpretation of her ancestor.
Peter Ustinov later played the Prince of Wales' younger brother and eventual successor King William IV in Victoria & Albert (2001) and their great-nephew King Edward VII in Strumpet City (1980).
The German words "Ich dien" appear on the Prince of Wales's heraldic badge. In English, the phrase translates to "I serve."