Charlie Hunnam Arthur
Aidan Gillen William "Goosefat Bill"
Jude Law Vortigern
Annabelle Wallis Maggie
Guy Ritchie Producer, Screenplay, Inn Owner (uncredited), Director
Freddie Fox Rubio
Eric Bana Uther Pendragon
Djimon Hounsou Bedivere
Mikael Persbrandt Greybeard
Hermione Corfield Syren 3
Adrian Bouchet Baron 3
Àstrid Bergès-Frisbey The Mage
Katie McGrath Elsa
Eline Powell Syren 2
Millie Brady Catia
Uli Meyer Storyboard Artist
Georgina Campbell Kay
David Beckham Trigger
Geoff Bell Mischief John
Tom Wu "Kung Fu" George
Charlie Rawes Axeman
Marc Wolff Pilot, Aerial Coordinator
Lucy Chappell Young Mother (uncredited)
Lee Nicholas Harris Dan Clan Mafia (uncredited)
Matthew Skelding Dialogue Editor
Peter Guinness Baron 1
Nick Davis VFX Supervisor
Kingsley Ben-Adir Tristan "Wet Stick"
Neil Maskell Back Lack
Max Keene First Assistant Director, Associate Producer
Daniel Stisen SPAC / Londinum Fighter (uncredited)
Michael McElhatton Jack's Eye
Mark Umbers Baron 2
Wil Coban Brother Blackleg
Florence Bell Woman 1
Akiva Goldsman Producer
James Warren Mike
Chris Burdon Sound Re-Recording Mixer
Rebecca Calder Maid 1
Daniel Pemberton Original Music Composer
John Marzano Aerial Director of Photography
Gemma Jackson Production Design
Craig McGinlay Percival "Percy"
Anthony Caron-Delion Art Direction
Denis Schnegg Supervising Art Director
Paul Edwards Steadicam Operator
Peter Ferdinando Earl of Mercia
John Mathieson Director of Photography
Karen Elliott Music Supervisor
David Dobkin Story, Executive Producer
Ben Meechan Sound Effects Editor
Zoe Freed Foley
Joby Harold Producer, Story, Screenplay
Peter Burgis Foley
Luke Scott Stunts
Tina Jones Set Decoration
Ben Shepherd Visual Effects
Pete Ford Stunts
Gintare Beinoraviciute Noble (uncredited)
Jonathan Fawkner Visual Effects Supervisor
Flora Moody Makeup Artist
Paul Driver Visual Effects Producer
Alex Bicknell Visual Effects Producer
Cordelia Bugeja Woman 3
Nick Cornwall Clan Head 1 (uncredited)
Sol Saihati Lighting Technician
Annabel Wood Stunt Double
Luan Placks Assistant Costume Designer
Cristian Knight Stunts
Bruce Berman Executive Producer
Steen Young Nemesis (uncredited)
Michael Byrch Stunts