Nicholas Courtney
饰 Brigadier Lethbridge-Stewart
Richard Franklin
饰 Captain Mike Yates
John Levene
饰 Sergeant Benton
Roger Delgado
饰 The Master
Pik-Sen Lim
饰 Captain Chin Lee
Raymond Westwell
饰 Prison Governor
Michael Sheard
饰 Dr. Roland Summers
Simon Lack
饰 Professor Kettering
Fernanda Marlowe
饰 Corporal Bell
Neil McCarthy
饰 George Patrick Barnham
Clive Scott
饰 Arthur Linwood
Roy Purcell
饰 Chief Prison Officer Powers
Eric Mason
饰 Senior Prison Officer Green
Bill Matthews
饰 Prison Officer
Barry Wade
饰 Prison Officer
Dave Carter
饰 Prison Officer
Martin Gordon
饰 Prison Officer
