the kid who would be king imdb cast?
['Louis Ashbourne Serkis as Alex.', 'Tom Taylor as Lance.', 'Dean Chaumoo as Bedders.', 'Rhianna Dorris as Kaye.', 'Angus Imrie as Young Merlin.', 'Rebecca Ferguson as Morgana.', 'Patrick Stewart as Adult Merlin.', 'Denise Gough as Mary.']