The film takes place in October 1651.
Michael Anderson Jr.'s film debut.
In the autobiography of George Baker, "The Way to Wexford", the statement that 25 shillings is 25p is incorrect. 25 shillings has been £1.25 since decimal currency started in 1971.
"Moonraker" as a name was used by Ian Fleming for one of his James Bond novels. George Baker was on the shortlist to play James Bond when the film adaptations began in 1961-62. It is said that Baker was Fleming's preferred choice of actor.