Simon's work includes A Christmas Carol, Cinderella and The Infamous Brothers Davenport (with Vox Motus) at the Royal Lyceum, Edinburgh; This Wide Night for the Tron Theatre, Glasgow; Dragon, The Day I Swapped My Dad for Two Goldfish, Truant and A Sheep Called Skye for the National Theatre of Scotland; Kora (with Magnetic North) at Dundee Rep, After the End and Top Dog / Underdog for the Citizens Theatre, Glasgow; Encourage the Others at the Almeida and the 2010 Season for Pitlochry Festival Theatre.
Simon is an associate artist for Magnetic North - work for them includes Kora, Sex and God, Pass the Spoon, Wild Life and After Mary Rose. His work with Vox Motus includes the award-winning Slick, Dragon, The Infamous Brothers Davenport, The Not-So-Fatal Death of Grandpa Fredo and Bright Black
Simon lit the first four national tours of Mum's the Word, the tribute musical Always ... Patsy Cline, three tours of A Happy Medium, and the Scottish tours of The Odd Couple, Tally's Blood, Dead Funny, Good Things and Passing Places
Simon had a place in the Guinness Book of Records for his design for Act 24's production of Oklahoma at the Edinburgh Playhouse, which created the record for "Fastest Theatrical Production"
Pass the Spoon (2012), The Not-So-Fatal-Death of Grandpa Fredo (2011) and Slick (2009) were all nominated for Best Design in the Critics Awards for Theatre in Scotland. Bright Black (2010) was nominated and Slick (2009) won Best Technical Presentation in the same awards.