Further casting has been revealed for the upcoming West End production of Frozen, following the news earlier this year that Samantha Barks has been cast in the role of Elsa.Directed by Michael Grandage, the Disney musical is set for its London premiere in October, when it reopens the Theatre Royal Drury Lane.Joining Barks will be Stephanie McKeon, who is set to take on the role of Anna, who embarks on an epic journey with the help of a mountaineer, his reindeer and a snowman to find her sister,...