Simon's current and forthcoming designs include Twelfth Night for the Royal Shakespeare Company directed by Christopher Luscoombe, a new production of Dr Jekyll and Mr Hyde for the Touring Consortium and the stage version of Some Mother's Do 'Ave 'Em. His other most recent credits include The Norman Conquests directed by Blanche McIntyre as part of Daniel Evans' inaugural season at Chichester Festival Theatre, Racing Demon directed by Jonathan Church at Theatre Royal Bath, Stephen Unwin's debut play All Our Children at Jermyn Street Theatre, Love's Labours Lost and Much Ado About Nothing for the Royal Shakespeare Company at the Theatre Royal Haymarket (also at Stratford and Chichester Festival Theatre), Saturday Night Fever in Copenhagen, the UK premiere of the musical Big, a new production of Chitty Chitty Bang Bang at West Yorkshire Playhouse and a major UK tour, the centenary production of Hobson's Choice with Martin Shaw (West End), Present Laughter and She Stoops To Conquer (Theatre Royal Bath), Blithe Spirit with Angela Lansbury (West End and USA) and two Derren Brown shows Infamous and Miracle (West End and UK tours).
Highlights amongst his numerous other credits are The Importance of Being Earnest (Shakespeare Theatre, Washington D.C), The Magic Flute and The Marriage of Figaro (Scottish Opera), The Resistible Rise of Arturo Ui, Yes Prime Minister, Rosencrantz and Guildenstern Are Dead, When We Are Married, The Rivals, Derren Brown - Infamous, Man and Boy, Hay Fever, Of Mice and Men, Amy's View (all West End), Enemies, Whistling Psyche and The Earthly Paradise (Almeida), The Accidental Death of an Anarchist (Donmar), The Force of Change (Royal Court), The Merry Wives of Windsor (Royal Dramatic Theatre, Stockholm), An Ideal Husband and Mrs Warren's Profession (Shakespeare Theatre, Washington D.C), Haunted (New York, Brits off Broadway), Pygmalion (Old Vic). Singer, A Russian In The Woods and Thomas More (Royal Shakespeare Company), The Brothers Karamazov (Manchester Royal Exchange), To Kill A Mockingbird (West Yorkshire Playhouse) and many designs and many designs at Chichester Festival Theatre - most recently Mrs Pat with Penelope Keith, Amadeus with Rupert Everett, An Ideal Husband with Patricia Routledge, Stevie with Zoe Wanamaker (also Hampstead) and Singin' In The Rain (also West End and world tour).
Simon designs for opera worldwide and is the recipient of the Manchester Theatre Award for Best Design (Wonderful Town), two TMA Best Design Awards (Elizabeth Rex and Three Sisters) and the Helen Hayes Best Design Award (Lady Windermere's Fan) in the United States.