William Hartnell as The Doctor

Jacqueline Hill as Barbara Wright

William Russell as Ian Chesterton

Maureen O'Brien as Vicki

Derek Sydney as Sevcheria

Nicholas Evans as Didius

Dennis Edwards as Centurion

Margot Edwards as Stall Holder

Edward Kelsey as Slave Buyer

Bart Allison as Maximus Pettulian

Barry Jackson as Ascaris

Peter Diamond as Delos

Michael Peake as Tavius

Dorothy-Rose Gribble as Woman Slave

Gertan Klauber as Galley Master

Ernest Jennings as Man in Market

John Caesar as Man in Market

Tony Lambden as Court Messenger

Derek Francis as Nero

Brian Proudfoot as Tigellinus

Kay Patrick as Poppaea Sabina

Anne Tirard as Locusta