Arthur

Charlie Hunnam

The Mage

Astrid Bergès-Frisbey

Vortigern

Jude Law

Bedivere

Djimon Hounsou

Uther

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

Low-Rent Villager

Sarah-Jane De Crespigny

Bodhi Fox Keene

Yannik Baker

Hugh Robb

Barney Walsh

Henry W. Smith

Malique Thompson-Dwyer

Cole Wealleans-Watts

James Anderson

Justin Aves