Sebastian Croft
Atti
Emilia Jones
Orla
Kate Nash
Boudicca
Nick Frost
Arghus
Craig Roberts
Nero
Kim Cattrall
Agrippina
Derek Jacobi
Claudius
Rupert Graves
Paulinus
Lucy Montgomery
Birte
Tony Gardner
Antonius
Alex Macqueen
Sycophantus
Tony Way
Brigantes Warrior
Dominique Moore
Traveller
Kevin Hudson
Senator
Marek Larwood
Gladiator With A Funny Voice
Sarah Hadland
Irene the Iceni
Sanjeev Bhaskar
Mr Felix
Dave Lamb
Dougal
Jessica Ransom
Drusilla
Tom Stourton
Percy
Richard David-Caine
Soothsayer
Lawry Lewin
Sandal Seller
Katy Wix
Watling Street Presenter
Katherine Jakeways
Julia
Alexander Armstrong
Catus Decianus
Lee Mack
Decimus
Warwick Davis
Gladiator Trainer
Jamie Demetriou
Dimidius
Kevin Bishop
German Legate
Samantha Spiro
Mrs Felix
Ella Smith
Mrs Dougal
Dan Renton Skinner
Chief of the Army
Dustin Demri-Burns
Cedric
Tim Downie
British Legate
Chris Addison
Colin
John Eccleston
Rattus Rattus (voice)
Keir Charles
Doctor
Anna Crilly
Flavia
Jordan Scowen
Celcius
Jason Forbes
Sweat Seller
Tobi Bamtefa
Severus
Terry Deary
Gaulish Legate
Paul Bazely
Egyptian Legate
Joanna Bacon
Brenda
Ncuti Gatwa
Timidius
Ben Ashenden
Messenger
Jalaal Hartley
Weedy Messenger
Mike Wozniak
Owen Bowen
Martin Brown
Roman Attendant
Philip Harvey
Centurian
Oliver Simms
Celt Warrior - Enemy Tribesman (uncredited)