Theatre credits include: Beginning by David Eldridge (Queens Theatre Hornchurch/Bath Theatre Royal), Sirens (Mercury Theatre), After Birth (North Wall), Missing People (Leeds Playhouse/National Theatre Tokyo), Skellig (Nottingham Playhouse), Much Ado About Nothing (Jamie Hendry Productions/NESC/International Tour), The Here and This and Now (Plymouth Drum/Southwark Playhouse), The Pitmen Painters (New Vic), Our Country’s Good (Out of Joint), Lizzie Siddal (Arcola), The Armour/Hotel Plays (Defibrilator), Flare Path (National Tour), Catch 22 (Northern Stage), Virgin (Watford Palace), King Lear (Theatre Royal Bath), Mad About The Boy (Young Vic/Bush Theatre), SourLips (Oval House), The Fifth Column, The Taming of the Shrew, What the Women Did (Southwark Playhouse), Love Love Love (Original Cast) (Paines Plough), Unrestless (Old Vic Tunnels), Accolade (Original Revival Cast) (Finborough Theatre), Ramshackle Heart (Public Theatre New York) Arse, Shove (Theatre 503), Mad Forest, The Wonder (BAC), The Merchant of Venice, The Tragedy of Thomas Hobbes, The Taming of the Shrew, A Midsummer Night’s Dream (RSC), Fanny & Faggot (Trafalgar Studios), Nikolina, Bedtime for Bastards (nabokov).

Television credits include: Top Boy, Years and Years, Britannia, Call the Midwife, Silent Witness, The Bletchley Circle, The Bill.

Film credit; The Great Escaper (released 2023)

Simon has also recorded numerous audiobooks and Radio Plays