| Person | Type | Job | Role(s) |
|---|---|---|---|
 Barry Letts | Crew | Production | Producer |
 Bernard Wilkie | Crew | Visual Effects | Visual Effects Designer |
 David Maloney | Crew | Directing | Director |
 Dudley Simpson | Crew | Sound | Original Music Composer |
Malcolm Hulke | Crew | Writing | Writer |
Paul Bernard | Crew | Directing | Director |
Brian Hiles | Crew | Sound | Sound |
Barbara Kidd | Crew | Costume & Make-Up | Costume Design |
Dick Mills | Crew | Crew | Special Sound Effects |
 Terrance Dicks | Crew | Writing | Script Editor |
Sandra Shepherd | Crew | Costume & Make-Up | Makeup Artist |
Rhys Jones | Crew | Visual Effects | Visual Effects Designer |
Ralph Walton | Crew | Lighting | Lighting Director |
Nicholas John | Crew | Production | Production Assistant |
John Bush | Crew | Editing | Editor |
John Tiley | Crew | Camera | Camera Operator |
Caroline Hunt | Cast | Technician | |
 Harold Goldblatt | Cast | Actor | Professor Dale |
 James Culliford | Cast | Actor | Stewart |
John Rees | Cast | Actor | Hardy |
 John Woodnutt | Cast | Actor | Draconian Emperor |
 Jon Pertwee | Cast | Actor | The Doctor |
Karol Hagar | Cast | Secretary | |
 Katy Manning | Cast | Actress | Jo Grant |
Laurence Harrington | Cast | Actor | Lunar guard |
 Louis Mahoney | Cast | Actor | Newscaster |
 Luan Peters | Cast | Actress | Sheila |
 Madhav Sharma | Cast | Actor | Patel |
 Michael Hawkins | Cast | Actor | General Williams |
Michael Kilgarriff | Cast | Actor | Second Ogron |
 Michael Wisher | Cast | Actor | Dalek (voice) |
Ramsay Williams | Cast | Actor | Congressman Brook |
 Ray Lonnen | Cast | Actor | Gardiner |
Richard Shaw | Cast | Actor | Cross |
 Roger Delgado | Cast | Actor | The Master |
Stanley Price | Cast | Pilot | |
Stephen Thorne | Cast | Actor | First Ogron |
Timothy Craven | Cast | Cell guard (uncredited) | |
Vera Fusek | Cast | President of Earth | |
Peter Birrel | Cast | Actor | Draconian Prince |
Barry Ashton | Cast | Actor | Kemp |
Rick Lester | Cast | Actor | Third Ogron |
Clifford Elkin | Cast | Earth cruiser captain | |
Roy Pattison | Cast | Actor | Draconian space pilot |
Lawrence Davidson | Cast | Actor | Draconian First Secretary (uncredited) |
Dennis Bowen | Cast | Actor | Prison Governor |
Bill Wilde | Cast | Draconian captain | |
| Person | Type | Job | Role(s) |
