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James Cooper

Founder & CEO

James Cooper

Clinical Nutrition · Performance Optimisation

James Cooper, founder and CEO of BTX Body Transformation

Meet your coach

James Cooper

Founder & CEO

James Cooper is a distinguished Clinical Nutritionist, educated at King’s College London, with a specialist focus on performance optimisation through tailored diet and supplementation strategies. With a strong academic foundation and years of practical experience, James has built a reputation for transforming the physical and mental capabilities of high performers.

A lifelong athlete, James made history as the youngest British-born recipient of a Brazilian Jiu Jitsu black belt at the time, a testament to his discipline, dedication, and technical mastery. He has since earned his 3rd dan black belt under the legendary 10x world champion Roger Gracie, and has successfully competed in both the British and European Powerlifting finals.

James is renowned not only for his elite sporting background, but also for his ability to bridge the worlds of high-performance sport and executive wellbeing. His client portfolio includes high-level athletes, investment bankers, CEOs, and legal professionals, all of whom rely on his expertise to operate at peak performance both in and out of the gym.

Featured in Muscle & Fitness magazine as the “model trainer,” James is the trusted name behind the transformations of celebrities preparing for roles, appearances, or high-profile photoshoots. His high-profile clientele includes TV personality Calum Best, musician Matt Willis of Busted, and models Rick Hall and Chris Percival, among many others.

With a unique blend of scientific insight, coaching experience, and competitive edge, James Cooper is widely regarded as one of the UK’s leading authorities in functional training, nutrition, and elite performance.

James Cooper, founder and CEO of BTX Body Transformation
CEO & Founder Clinical Nutritionist | Strength & Conditioning Specialist | Black Belt Brazilian Jiu Jitsu Coach

Client results

Real people.
Measured results.

★★★★★
“I am halfway through my 12 week program and have already dropped 5% in body fat and added muscle.”
Moritz12 week programme · Trustpilot
★★★★★
“I have been training with Justin for over a year and am blown away with the result. Justin and the team really know their science.”
Jean-PhilippeClient for 1+ year · Trustpilot
★★★★★
“The team at BTX supported me in getting my fitness and strength back. Justin is incredibly focused and committed.”
ShivaStrength and fitness · Trustpilot

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