Alexander "Alex" Elliot

Louis Ashbourne Serkis

Acting

Bedders

Dean Chaumoo

Acting

Lance

Tom Taylor

Acting

Kaye

Rhianna Dorris

Acting

Mrs. Elliot

Denise Gough

Acting

Merlin

Angus Imrie

Acting

Old Merlin

Patrick Stewart

Acting

Morgana

Rebecca Ferguson

Acting

Sophie

Genevieve O'Reilly

Acting

Mrs. Lee

Noma Dumezweni

Acting

Mr. Kepler

Nathan Stewart-Jarrett

Acting

Mr. Jeffreys

Mark Bonnar

Acting

Ms. Foster

Alexandra Roach

Acting

Mr. Hyde

Nick Mohammed

Acting

Stonehenge Tour Guide

Adam Buxton

Acting

Riding Instructor

Claudie Blakley

Acting

Punto Patty

Myra McFadyen

Acting

Policeman

Adam Leese

Acting

Policeman

Joey Ansah

Acting

Boy (uncredited)

Amir Wilson

Acting

Student Fighter

Sean Coleman

Directing