Clive Owen
Arthur
Acting
Ioan Gruffudd
Lancelot
Acting
Keira Knightley
Guinevere
Acting
Mads Mikkelsen
Tristan
Acting
Joel Edgerton
Gawain
Acting
Hugh Dancy
Galahad
Acting
Ray Winstone
Bors
Acting
Stephen Dillane
Merlin
Acting
Ray Stevenson
Dagonet
Acting
Til Schweiger
Cynric
Acting
Stellan Skarsgård
Cerdic
Acting
Sean Gilder
Jols
Acting
Ken Stott
Marius Honorius
Acting
Charlie Creed-Miles
Ganis
Acting
David Murray
Merlin's Lieutenant
Acting
Ned Dennehy
Mental Monk
Acting
Phelim Drew
Obnoxius Monk
Acting
Des Braiden
Third Monk
Acting
Bosco Hogan
Bishop Decoy
Acting
David Wilmot
Woad Killed by Lancelot
Acting
Lochlann Ó Mearáin
Roman Commander
Acting
Ivano Marescotti
Bishop Germanus
Acting
Clive Russell
Lancelot's Father
Acting
Graham McTavish
Roman Officer
Acting
Dessie Gallagher
Mercenary
Acting
Elliot Henderson-Boyle
Young Lancelot
Acting
Owen Teale
Pelagius (uncredited)
Acting
Dawn Bradfield
Vanora
Acting
Pat Kinevane
Horton
Acting