About John
John graduated from the Welsh Institute of Chiropractic in 2005. He practised in Newport and Cwmbran before moving to Bicester in 2007, and also built a practice in Leighton Buzzard. He has owned Williamson Chiropractic & Sports Injuries Clinic since 2010.
His clinical interests include soft tissue injuries, sports rehabilitation and strength-based performance. He holds the International Certificate in Sports Chiropractic (ICSC) and is a Fellow of the Royal College of Chiropractorsโ Sports Faculty.
Clinical Sport Chiropractic Experience
- Johnโs British Masters Medical Team work dates from 2006. His assignments have included France, Italy, Finland, Hungary, Birmingham, Cardiff and London.
- His strongman experience includes Britainโs and Europeโs Strongest Man in 2019, Englandโs Strongest Man in 2022 and 2023, and Oxfordshireโs Strongest in 2024.
- He has supported leading male and female strength athletes with injury prevention, rehabilitation and performance.
- FICS Master Instructor in August 2024. His teaching includes seminars in Oxford, Chile, Belgium, Portugal and South Africa, alongside ICSC education for the Royal College of Chiropractors.
- Teaches Graston Technique and laser therapy, combining practical instruction with clinical theory.
- Serves as Treasurer of the British Chiropractic Association and Vice-Chair of its Communications Committee.
- Previous service includes its Professional Standards Committee.
- International competitive experience in two sports.
- Qualified strength and conditioning coach.
- Director of a multidisciplinary sports injuries clinic.
- Personal recovery from five major orthopaedic operations, informing his approach to rehabilitation.
- Training in RFU Pre-Hospital Immediate Care in Sport (PHICIS).
Clinical development
- Electrotherapy and dry needling (medical acupuncture).
- Myofascial cupping and Graston Technique, an instrument-assisted soft tissue technique.
- Laser and shockwave therapy.
- Kinesio and Dynamic taping.
- Diagnostic and treatment technologies within individualised patient care.


