Simon is a comedian, writer and director. He wrote and directed the films Carnage and Benjamin. His work on television has included presenting Popworld and Never Mind the Buzzcocks.
Simon is Jewish and seems to have a naturalistic worldview. He has said (albeit as part of a comedy performance): "I don't want to attack religious people who may be here this evening. It feels like a sort of unkind thing to do, to attack religious people, and it feels... You know, it feels too easy, and like the battle's already been won..." Simon is vegan, implying a sentiocentric moral scope. His film, Carnage, depicts a future vegan human society trying to come to terms with the guilt of its carnist past.