Tom Baker
The Doctor
Acting
Lalla Ward
Romana
Acting
David Brierly
K-9 (voice)
Acting
Christopher Neame
Skagra
Acting
Daniel Hill
Chris Parsons
Acting
Denis Carey
Professor Chronotis
Acting
Victoria Burgoyne
Clare Keightley
Acting
Gerald Campion
Wilkin
Acting
Shirley Dixon
The Ship (voice)
Acting
Derek Pollitt
Dr. Caldera
Acting
James Coombes
The Krargs (voice)
Acting
John Hallet
Police Constable
Acting
David Strong
Passenger
Acting
James Muir
Fisherman
Acting
Derek Suthern
Krarg
Acting
Barnaby Edwards
Krarg
Acting
Tim Bentinck
The Doctor (body double)
Acting
Toby Hadoke
Continuity Announcer (voice)
Acting