Discover
Jon Pertwee
The Doctor
Katy Manning
Jo Grant
Nicholas Courtney
Brigadier Lethbridge-Stewart
John Levene
Sergeant Benton
Richard Franklin
Captain Mike Yates
Stewart Bevan
Cliff Jones
Jerome Willis
Stevens
Tony Adams
Elgin
Ben Howard
Hinks
Mostyn Evans
Dai Evans
Talfryn Thomas
Dave
Roy Evans
Bert
Mitzi McKenzie
Nancy
Ray Handy
Milkman
John Scott Martin
Hughes
John Rolfe
Fell
John Dearth
BOSS (voice)
Richard Beale
Minister of Ecology
Jean Burgess
Cleaner
Brian Justice
Yates' Guard
Terry Walsh
Guard
Roy Skelton
James
Art
John Burrowes
Production Design
Directing
Michael E. Briant
Director
Editing
Alastair Mackay
Editor
Lighting
Mike Jefferies
Lighting Director
Production
John Harris
Production Assistant
Michael McDermott
Production Assistant
Barry Letts
Producer
Sound
Simon Wilson
Sound
Dudley Simpson
Original Music Composer
Richard Chubb
Sound
Delia Derbyshire
Theme Song Performance
Art
John Burrowes
Production Design
Directing
Michael E. Briant
Director
Editing
Alastair Mackay
Editor
Lighting
Mike Jefferies
Lighting Director
Production
John Harris
Production Assistant
Michael McDermott
Production Assistant
Barry Letts
Producer
Sound
Simon Wilson
Sound
Dudley Simpson
Original Music Composer
Richard Chubb
Sound
Delia Derbyshire
Theme Song Performance