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)