Eric Bana

Uther Pendragon

Bruce Berman

Executive Producer

Jude Law

Vortigern

Djimon Hounsou

Bedivere

Steven Mnuchin

Executive Producer

Geoff Bell

Mischief John

Charlie Hunnam

Arthur

David Dobkin

Executive Producer

Guy Ritchie

Director

Aidan Gillen

William "Goosefat Bill"

Tom Wu

"Kung Fu" George

Annabelle Wallis

Maggie

Neil Maskell

Back Lack

Àstrid Bergès-Frisbey

The Mage

Freddie Fox

Rubio

Georgina Campbell

Kay

Millie Brady

Catia

Craig McGinlay

Percival "Percy"

Kingsley Ben-Adir

Tristan "Wet Stick"

Zac Barker

Young Arthur 2 Yrs

Oliver Barker

Young Arthur 2 Yrs

Poppy Delevingne

Igraine

Nicola Wren

Lucy

Wil Coban

Brother Blackleg

Bleu Landau

Blue

Jacqui Ainsley

Lady of the Lake

Lorraine Bruce

Syren 1

Eline Powell

Syren 2

James Herbert

Executive Producer