Riven

Jon Pertwee

as The Doctor

Katy Manning

as Jo Grant

Roger Delgado

as The Master

Vera Fusek

as President of Earth

Michael Hawkins

as General Williams

Peter Birrel

as Draconian Prince

Lawrence Davidson

as Draconian First Secretary (uncredited)

Timothy Craven

as Cell guard (uncredited)

Ray Lonnen

as Gardiner

Barry Ashton

as Kemp

John Rees

as Hardy

James Culliford

as Stewart

Louis Mahoney

as Newscaster

Roy Pattison

as Draconian space pilot

Karol Hagar

as Secretary

Harold Goldblatt

as Professor Dale

Madhav Sharma

as Patel

Dennis Bowen

as Prison Governor

Richard Shaw

as Cross

Luan Peters

as Sheila

Caroline Hunt

as Technician

Bill Wilde

as Draconian captain

John Woodnutt

as Draconian Emperor

Ian Frost

as Draconian messenger

Clifford Elkin

as Earth cruiser captain

Stephen Thorne

as First Ogron

Michael Kilgarriff

as Second Ogron

Rick Lester

as Third Ogron

Ramsay Williams

as Congressman Brook

Michael Wisher

as Dalek (voice)

Stanley Price

as Pilot

Laurence Harrington

as Lunar guard

Paul Bernard

Director

David Maloney

Director

Malcolm Hulke

Writer

Barbara Kidd

Costume Design

Cynthia Kljuco

Production Design

John Tiley

Camera Operator

John Bush

Editor

Dudley Simpson

Original Music Composer

Sandra Shepherd

Makeup Artist

Barry Letts

Producer

Nicholas John

Production Assistant

Terrance Dicks

Script Editor

Dick Mills

Special Sound Effects

Ralph Walton

Lighting Director

Brian Hiles

Sound

Bernard Wilkie

Visual Effects Designer

Rhys Jones

Visual Effects Designer

Delia Derbyshire

Theme Song Performance