Richard Shaw, who spoke with a Cockney accent, was cast as Governor Lobos, but was asked to deliver his lines in BBC English. His accent slips only once, when he bellows at an underling to use "maximum securi'ee!"
Jeremy Bullock (Tor) has several credits in Star Wars films, including playing Boba Fett in The Empire Strikes Back and Return of the Jedi.
This episode was watched by 9.2 million viewers on its original transmission.