William Hartnell as The Doctor

Carole Ann Ford as Susan Foreman

Jacqueline Hill as Barbara Wright

William Russell as Ian Chesterton

Keith Anderson as Robespierre

Jack Cunningham as Jailer

Jeffry Wickham as Webster

Neville Smith as D'Argenson

Laidlaw Dalling as Rouvray

Peter Walker as Small Boy

James Cairncross as Lemaitre

Roy Herrick as Jean

Donald Morley as Jules Renan

Tony Wall as Napoleon Bonaparte

Caroline Hunt as Danielle

Edward Brayshaw as Léon Colbert

Dallas Cavell as Road Work Overseer

Denis Cleary as Peasant

John Barrard as Shopkeeper

Ronald Pickup as Physician

Howard Charlton as Judge

Robert Hunter as Sergeant

Ken Lawrence as Lieutenant

Patrick Marley as Soldier

Terry Bale as Soldier

John Law as Paul Barrass