Fountain played the title role in the pantomime Aladdin at the Manchester Opera House over the Christmas/New Year period of 2009/10.
He was one of the readers on the BBC's online Advent Calendar in December 2006 and starred in the 2006 pantomime Snow White and the Seven Dwarfs as the henchman at Manchester Opera House, appearing alongside Suranne Jones, Justin Moorhouse, and the all-star seven dwarves including Warwick Davis.
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In 2012 Myles returned to the stage in Zach Braff's play All New People, ran for ten consecutive weeks at the West End's Duke of York's Theatre following runs at the Manchester Opera House (8–11 February 2012) and the King's Theatre in Glasgow (14–18 February).