Tommy Trinder
Tommy Taylor
Frances Day
Poppaea
Sonnie Hale
The Professor
Francis L. Sullivan
Nero
Diana Decker
Lydia
Elisabeth Welch
Nora
Mary Clare
Volumnia
Ernest Milton
Titus
Frederick Piper
Auctioneer
Robert Wyndham
Lionkeeper
Russell Thorndike
High Priest
Danny Green
Lictor
James Robertson Justice
Centurion of the 8th Legion
Kay Kendall
Girl (uncredited)
Alec Mango
Secretary (uncredited)
Bill Shine
Minor Role (uncredited)
Julie Suedo
Señorita Àlvarez (uncredited)
Frank Tickle
Master of Ceremonies (uncredited)