Peter Davison (The Doctor)
Colin Baker (The Doctor)
Sylvester McCoy (The Doctor)
Nicholas Briggs (The Temperon / Drudgers)
Andrew Fettes (Commander Raldeth / Schmidt)
Mark Gatiss (Captain Schwieger / Captain / Knight 2)
Anthony Keetch (Coordinator Vansell)
Colin McIntyre (Sancroff)
Sarah Mowat (Knight Commander Lyena)
Nicholas Pegg (Delegate)
Maggie Stables (Ruthley)
Michael Wade (The President)
John Wadmore (Commandant / Lt Zentner
/ Pilot Azimendah / Sub-Commander Solanec)