Arthur
Charlie Hunnam
The Mage
Astrid Bergès-Frisbey
Vortigern
Jude Law
Bedivere
Djimon Hounsou
Uther Pendragon
Eric Bana
William "Goosefat Bill
Aidan Gillen
Rubio
Freddie Fox
Tristan "Wet Stick
Kingsley Ben-Adir
Percival
Craig McGinlay
Kung Fu" George
Tom Wu
Back Lack
Neil Maskell
Maggie
Annabelle Wallis
Young Arthur 2 Yrs
Zac Barker
Young Arthur 2 Yrs
Oliver Barker
Greybeard
Mikael Persbrandt
Mischief John
Geoff Bell
Earl of Mercia
Peter Ferdinando
Igraine
Poppy Delevingne
Catia
Millie Brady
Lucy
Nicola Wren
Elsa
Katherine Elizabeth McGrath
Brothel Blackleg
Wil Coban
Syren 1
Lorraine Bruce
Blue
Bleu Landau
Syren 2
Eline Powell
Lady of the Lake
Jacqui Ainsley
Syren 3
Hermione Corfield
Kay
Georgina Campbell
Mordred
Rob Knighton
Mage King
Michael Hadley
Trigger
David Beckham
Katie McGrath
General 1
Alan Turkington
Jack's Eye
Michael McElhatton
Max Rogers
Axeman
Charlie Rawes
Mike
James Warren
Maria
Ellie Graham
Rob Carpenter
Philip Ball
Merlin
Kamil Lemieszewski
Henry Faber
Viking
Kalle Hennie
Baron 1
Peter Guinness
Javan Hirst
Baron 2
Mark Umbers
Mark Epstein
Baron 3
Adrian Bouchet
Woman 1
Florence Bell
Woman 2
Anna Brooks Beckman
Woman 3
Cordelia Bugeja
Maid 1
Rebecca Calder
SPAC
Daniel Stisen
Inn Owner
Guy Ritchie
Pendragon Soldier
Tom Coulston
Fergal McElherron
Bodhi Fox Keene
Yannik Baker
Hugh Robb
Barney Walsh
Henry W. Smith
Malique Thompson-Dwyer
Cole Wealleans-Watts
James Anderson
Justin Aves