Elisabeth Sladen
Sarah Jane Smith
Tony Beckley
Harrison Chase
Kenneth Gilbert
Richard Dunbar
Michael Barrington
Sir Colin Thackeray
Sylvia Coleridge
Amelia Ducat
Mark Jones
Arnold Keeler / Krynoid (voice)
Michael McStay
Derek Moberley
Hubert Rees
John Stevensen
John Gleeson
Charles Winlett
Ian Fairbairn
Doctor Chester
John Acheson
Major Beresford
Ray Barron
Sergeant Henderson
David Masterman
Guard Leader
Keith Ashley
Sir Colin's Aide
Barry Summerford
UNIT Soldier
Patrick Ginter
UNIT Soldier
Rowland Geall
UNIT Soldier
Derek Wayland
UNIT Soldier
