Sylvester McCoy as The Doctor

Sophie Aldred as Ace

Nicholas Courtney as Brigadier Lethbridge-Stewart

Jean Marsh as Morgaine

Angela Bruce as Brigadier Winifred Bambera

Marek Anton as The Destroyer

Tai Ling as Shou Yuing

Marcus Gilbert as Ancelyn

Christopher Bowen as Mordred

James Ellis as Peter Warmsley

Angela Douglas as Doris

Noel Collins as Pat Rawlinson

June Bland as Elizaneth Rawlinson

Dorota Rae as Lavel

Robert Jezek as Zbrigniev

Paul Tomany as Husak