Jon Pertwee
The Doctor
Acting
Katy Manning
Jo Grant
Acting
Roger Delgado
The Master
Acting
Vera Fusek
President of Earth
Acting
Michael Hawkins
General Williams
Acting
Peter Birrel
Draconian Prince
Acting
Lawrence Davidson
Draconian First Secretary (uncredited)
Acting
Timothy Craven
Cell guard (uncredited)
Acting
Ray Lonnen
Gardiner
Acting
Barry Ashton
Kemp
Acting
John Rees
Hardy
Acting
James Culliford
Stewart
Acting
Louis Mahoney
Newscaster
Acting
Roy Pattison
Draconian space pilot
Acting
Karol Hagar
Secretary
Acting
Harold Goldblatt
Professor Dale
Acting
Madhav Sharma
Patel
Acting
Dennis Bowen
Prison Governor
Acting
Richard Shaw
Cross
Acting
Luan Peters
Sheila
Acting
Caroline Hunt
Technician
Acting
Bill Wilde
Draconian captain
Acting
John Woodnutt
Draconian Emperor
Acting
Ian Frost
Draconian messenger
Acting
Clifford Elkin
Earth cruiser captain
Acting
Stephen Thorne
First Ogron
Acting
Michael Kilgarriff
Second Ogron
Acting
Rick Lester
Third Ogron
Acting
Ramsay Williams
Congressman Brook
Acting
Michael Wisher
Dalek (voice)
Acting
Stanley Price
Pilot
Acting
Laurence Harrington
Lunar guard
Acting