The Doctor
Tom Baker
Romana II
Lalla Ward
Nimon
Trevor St. John Hacker
Teka
Janet Ellis
Seth
Simon Gipps-Kent
Sezom
John Bailey
K9 (voice)
David Brierly
Soldeed
Graham Crowden
Sorak
Michael Osborne
Pilot
Bob Hornery
Co-Pilot
Malcolm Terris
Nimon (voice)
Clifford Norgate
Robin Sherringham
Bob Appleby
Original Music Composer
Dudley Simpson
Script Editor
Douglas Adams
Visual Effects Designer
Peter Pegrum
Visual Effects
Dave Jervis
Special Sound Effects
Dick Mills
Editor
Rod Waldron
Lighting Director
Nigel Wright
Sound
John Hartshorn
Costume Design
June Hudson
Makeup Artist
Christine Walmesley-Cotham
Camera Operator
Alec Wheal
Production Assistant
Henry Foster
Production Design
Graeme Story
Producer
Graham Williams
Writer
Anthony Read
Director
Kenny McBain