Jon Pertwee

The Doctor

Katy Manning

Jo Grant

Roger Delgado

The Master

Vera Fusek

President of Earth

Michael Hawkins

General Williams

Peter Birrel

Draconian Prince

Lawrence Davidson

Draconian First Secretary (uncredited)

Timothy Craven

Cell guard (uncredited)

Ray Lonnen

Gardiner

Barry Ashton

Kemp

John Rees

Hardy

James Culliford

Stewart

Louis Mahoney

Newscaster

Roy Pattison

Draconian space pilot

Karol Hagar

Secretary

Harold Goldblatt

Professor Dale

Madhav Sharma

Patel

Dennis Bowen

Prison Governor

Richard Shaw

Cross

Luan Peters

Sheila

Caroline Hunt

Technician

Bill Wilde

Draconian captain

John Woodnutt

Draconian Emperor

Ian Frost

Draconian messenger

Clifford Elkin

Earth cruiser captain

Stephen Thorne

First Ogron

Michael Kilgarriff

Second Ogron

Rick Lester

Third Ogron

Ramsay Williams

Congressman Brook

Michael Wisher

Dalek (voice)

Stanley Price

Pilot

Laurence Harrington

Lunar guard