Midsomer Murders: The Killings at Badgers Drift (UK Tour); Joyride the Musical (Malmö Opera, China Theatre, Stockholm), Miss Saigon (Folketeatret, Oslo & Gothenburg Opera); Macbeth, A Midsummer Night's Dream, Julius Caesar (Shakespeare in the Park, Singapore); Stumped (Screen, Lords, Hampstead, UK Tour); Bring It On (Southbank Centre); The System (Screen); My Fair Lady (Grange Festival Opera & The Liceu, Barcelona); Being Mr Wickham (Screen, Jermyn Street, Queen Mary 2, UK tour, New York); Of Mice and Men (UK Tour); Some Mothers Do 'Ave 'Em (UK Tour); Hand To God (Singapore Repertory Theatre); Moving Stories (Haymarket, West End and Houses of Parliament); The Food of Love (Cadogan Hall, Royal Festival Hall); Cool Rider (Lyric & Duchess, West End); The Collector, Death and the Maiden (English Theatre Frankfurt); Cinderella (Manchester Opera House, Nottingham Theatre Royal); Peter Pan, Jack and the Beanstalk Snow White (Manchester Opera House); A Night with Bonnie Langford (London Hippodrome, Richmond Theatre); Farragut North (Southwark Playhouse); Someone Who’ll Watch Over Me (Cockpit).

Guy has trained actors and directors at Arts Ed, RADA, British American Drama Academy, Mountview, Liverpool Theatre School, Trinity-Laban, Tisch NYU, The Urdang Academy and Italia Conti.