Cast
Tom Baker
The Doctor
Elisabeth Sladen
Sarah Jane Smith
Tony Beckley
Harrison Chase
Kenneth Gilbert
Richard Dunbar
Michael Barrington
Sir Colin Thackeray
Sylvia Coleridge
Amelia Ducat
John Challis
Scorby
Mark Jones
Arnold Keeler / Krynoid (voice)
Seymour Green
Hargreaves
Michael McStay
Derek Moberley
Hubert Rees
John Stevensen
John Gleeson
Charles Winlett
Ian Fairbairn
Doctor Chester
John Acheson
Major Beresford
Ray Barron
Sergeant Henderson
Alan Chuntz
Chauffeur
David Masterman
Guard Leader
Harry Fielder
Guard
Pat Gorman
Guard
Ian Elliott
Guard
Keith Ashley
Sir Colin's Aide
Ronald Gough
Marine
Patrick Milner
Marine
Barry Summerford
UNIT Soldier
Tony Snell
UNIT Soldier
Patrick Ginter
UNIT Soldier
Rowland Geall
UNIT Soldier
Derek Wayland
UNIT Soldier
Keith Ashley
The Krynoid
Ronald Gough
The Krynoid
Crew
Directing
Douglas Camfield
Director
Editing
M.A.C. Adams
Editor
Production
Philip Hinchcliffe
Producer
Graeme Harper
Production Assistant
George Gallaccio
Production Manager
Sound
Vic Godrich
Sound
Delia Derbyshire
Theme Song Performance
John Holmes
Sound
Geoffrey Burgon
Original Music Composer
Visual Effects
Richard Conway
Visual Effects
