Kelly Reilly
Kerra (27 eps)
David Morrissey
General Aulus Plautius (27 eps)
Nikolaj Lie Kaas
Divis (27 eps)
Zoë Wanamaker
Queen Antedia (27 eps)
Stanley Weber
Lindon (27 eps)
Eleanor Worthington-Cox
Cait (27 eps)
Hugo Speer
Lucius (27 eps)
Annabel Scholey
Amena (27 eps)
Julian Rhind-Tutt
Phelan (27 eps)
Ian McDiarmid
King Pellenor (27 eps)
Mackenzie Crook
Veran (9 eps)
Gershwyn Eustache Jnr
Vitus (9 eps)
Barry Ward
Sawyer (9 eps)
Liana Cornell
Ania (9 eps)
Callie Cooke
Islene (9 eps)
Aaron Pierre
Antonius (9 eps)
Joe Armstrong
Gildas (9 eps)
Fortunato Cerlino
Vespasian (9 eps)
Rhys Yates
Julius (5 eps)
Robert Ryan
Celtic Slave Master (5 eps)
Joseph Harmon
Innis (3 eps)
Jodie McNee
Willa (3 eps)
Laura Donnelly
Hella (2 eps)
Ben Bradshaw
Elder 5 (2 eps)
Victoria Hogan
Brieta (1 eps)
Billy Jenkins
Young Veran (voice) (1 eps)