John initially trained as a GP in Manchester before spending 2 years of higher specialist training as a registrar in Sport and Exercise Medicine in the London Deanery where he worked at the Olympic Medical Institute, Chelsea FC academy and then with the orthopaedic team at Charing Cross Hospital.

He completed his training in the Yorkshire Deanery at the Royal Hallamshire and Northern General Hospitals in Sheffield. His first consultant post was at the tertiary referral Defence Military Rehabilitation Centre at Headley Court in Surrey. From 2008 to 2013 John also worked as Endurance Medical Officer to British Athletics at St Mary’s University in Twickenham and then at the National Performance Institute in Loughborough. 

He worked with Team GB endurance track and marathon athletes for several years at altitude training camps in France and Kenya in preparation towards the 2012 Olympics. He worked as team doctor to the British Paralympic Athletics team at the IPC World Championships in France in 2013 and has worked extensively with Great Britain & N Ireland teams at World and European Cross Country Championships since 2007.

John is listed on the GMC Specialist Register for Sport & Exercise Medicine & his GMC Registration no. is 4420093