Due to BBC rules at the time, Producer David Maloney could not be given a director credit so there is no director credited on-screen.
This is the only episode to open with a re-enactment of the end of the previous episode.
Paul Darrow was against the ending scene of Avon accepting Tarrant and Dayna aboard the Liberator. He relented when it was pointed out that the scene was crucial to having the characters in the series.
This was the first episode of the third series to be filmed.
Two guest stars were in Star Wars: Episode V - The Empire Strikes Back (1980). Michael Sheard (Klegg) was Admiral Ozzel and John Hollis (Lom) was Lobot.