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