He has appeared in Shakespeare plays, including Henry VI, Part 1, Henry VI, Part 2 and Henry VI, Part 3 for Shakespeare's Globe; Much Ado About Nothing for Shakespeare in the Squares; Romeo and Juliet for Creation Theatre; and Romeo and Juliet and Othello for Midas Touch Productions.
In twentieth-century drama, Myles has appeared in Eugene O'Neill's The Hairy Ape at Southwark Playhouse; Towards Zero and The Unexpected Guest by Agatha Christie at The Mill at Sonning; Alan Ayckbourn's A Chorus of Disapproval; The Freedom of the City and The Lady's Not for Burning at the Finborough Theatre; and Harold Pinter's Victoria Station at The King's Head Theatre.
His film and TV credits include BBC/HBO's Industry, The Bill and Secret Smile.
He wrote and directed the BAFTA-longlisted short film The Overcoat, with Jason Watkins, Vicki Pepperdine, Tim Key, Alex Macqueen and adapted from Nikolai Gogol's short story, A Pornographer Woos, with Michael Smiley and adapted from Bernard MacLaverty's short story, Henry VI, Part 1 as part of Shakespeare's Globe's Complete Walk, Telling Laura, with Colin Hoult and Louise Ford, Anthropopopometry, with Peter McDonald and Lloyd Hutchinson, Santa's Blotto, with Brian Blessed, which premiered at the BFI London Film Festival and was made with Film London support.
[clarification needed] Other writing work includes Will: The Lost Years, which won the Channel Four/Stellar Network Pitch Up Competition in 2009.