Charlie Hunnam Arthur
Jude Law Vortigern
Aidan Gillen William "Goosefat Bill"
Guy Ritchie Director, Producer, Screenplay, Inn Owner
Annabelle Wallis Maggie
Eric Bana Uther Pendragon
Djimon Hounsou Bedivere
Mikael Persbrandt Greybeard
Freddie Fox Rubio
Omar Morsy Animation Supervisor
David Beckham Trigger
Geoff Bell Mischief John
Georgina Campbell Kay
Tom Wu "Kung Fu" George
Katie McGrath Elsa
Mike Valentine Underwater Camera
Astrid Bergès-Frisbey The Mage
Rebecca Calder Maid 1
Akiva Goldsman Producer
Tina Jones Set Decoration
Hermione Corfield Syren 3
Florence Bell Woman 1
Daniel Stisen SPAC / Londinum Fighter (uncredited)
Eline Powell Syren 2
Lionel Wigram Producer, Screenplay
Neil Maskell Back Lack
Katy Covell Casting Assistant
Toby Plaskitt Russian Arm Operator
Marco Scotti Costume Supervisor
James Herbert Editor, Executive Producer
Millie Brady Catia
Daniel Rogers Health and Safety
Gemma Jackson Production Design
Max Keene Associate Producer, First Assistant Director
Uli Meyer Storyboard Artist
Angus Munro Second Film Editor
Andrew Palmer Art Direction
Nick Cornwall Clan Head 1 (uncredited)
Lucia Foster Found Aerial Coordinator
Kingsley Ben-Adir Tristan "Wet Stick"
Wil Coban Brother Blackleg
Ollie Gilbert Casting Assistant
Craig McGinlay Percival "Percy"
Jinnie Pak Visual Effects Producer
Sarah-Jane De Crespigny Low-Rent Villager
Michael McElhatton Jack's Eye
Charlie Rawes Axeman
Daniel Pemberton Original Music Composer
Peter Guinness Baron 1
Shawn White Gaffer
Lee Nicholas Harris Dan Clan Mafia (uncredited)
Adrian Bouchet Baron 3
Peter Ferdinando Earl of Mercia
Matthew Skelding Dialogue Editor
Sophie Bugeaud Assistant Costume Designer
Chris Burdon Sound Re-Recording Mixer
James Boyle Sound Designer
Kamil Lemieszewski Merlin
Mark Umbers Baron 2
Poppy Delevingne Igraine
Terry Archer Set Costumer
Peter Burgis Foley
Alan Stewart Second Unit Director of Photography
John Mathieson Director of Photography
Gintare Beinoraviciute Noble (uncredited)
Brian Pohl Pre-Visualization Supervisor
Dominic Gibbs Supervising Sound Editor
David Dobkin Story, Executive Producer
William Sumpter Armorer
Sarah Lochlan Stunts
Ben Shepherd Visual Effects
Paul Edwards Steadicam Operator