George Baker
Tiberius /

James Faulkner
Herod Agrippa /

Margaret Tyzack
Antonia /

Brian Blessed
Augustus /

Fiona Walker
Agrippina /

Kevin McNally
Castor /

John Hurt
Caligula /

Sheila White
Messalina /

Frances White
Julia /

David Robb
Germanicus /

John Rhys-Davies
Naevius Sutorius Macro /

John Cater
Narcissus /

Bernard Hepton
Pallas /

John Paul
Marcus Vipsanius Agrippa /

Ian Ogilvy
Drusus /

Siân Phillips
Livia Drusilla / Livia

Derek Jacobi
Claudius

Patrick Stewart
Sejanus

Christopher Biggins
Nero

Patricia Quinn
Livilla