Simon is a former National Junior Champion and record holder in Javelin. He competed from 1992–1998 before retiring in 2000 after an injury. He has been a UKA-certified Athletics Coach for over a decade, helped many athletes up to national and international level, and is currently a personal coach to two GB Athletes in Javelin and Shot. He has been an England Team Javelin Coach and worked with several athletes on the Youth Talent Program.
Currently, Simon is the Chairman and Head Throws coach at Leigh Harriers Athletics Club, L2 Field Official. holds enhanced DBS clearance, and is UKA certified in First Aid, Safeguarding, and Clean Athletics.