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About Jason Jackson

A world-class personal trainer, performance coach, and nutrition expert with almost twenty years of elite industry experience.

Renowned for his ability to help clients break through fitness plateaus and achieve lasting transformations, Jason combines cutting-edge science with a client-focused approach to deliver personalised, results-driven training and nutrition solutions.

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With advanced academic credentials, including a Master’s Degree in Sports Nutrition and ongoing PhD research in Sports Psychology, Jason brings an unparalleled depth of knowledge to his work. His groundbreaking PhD study, the largest of its kind with over 3,000 participants, explores personal training client behaviour, allowing him to provide evidence-based strategies that go far beyond the industry standard.

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Jason’s career spans prestigious roles in elite sports and fitness, including strength and conditioning coach at Brentford FC, performance nutritionist at Millwall FC, and serving as the highest-level trainer at both Third Space and Virgin Active from 2018 to 2025. He has also written CIMSPA-accredited courses for Europe’s largest personal training operator and delivered lectures internationally, including universities and NHS trusts, demonstrating his commitment to advancing the fitness industry through education and innovation.

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Jason’s holistic approach focuses on refining every element of fitness - periodisation, exercise selection, training volume and frequency, nutrition, and behaviour change - ensuring his clients make sustainable progress while gaining a profound understanding of effective training principles. Whether working with seasoned gym-goers or high-performing professionals, Jason provides the structure, accountability, and expertise they need to unlock their potential and achieve unparalleled results.

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A trusted leader and thought influencer in fitness, Jason’s mission is to bridge the gap between academic knowledge and real-world application, empowering clients to take control of their fitness journeys with confidence and precision.

Jason Jackson Personal Training Credentials

Background Details

Icon Trainer - Virgin Active

Dec 2008 - Aug 2022

- First and only ICON PT in the company (2018)

- First Master trainer at Broadgate (2013)

- First Elite trainer at Cricklewood (2009)
- PT of the Year out of 1,100 personal trainers across 123 clubs (2015)

Director of Nutrition - ACA

Jan 2019 - Dec 2022

- Produced evidence-based CPD for personal trainers
- Delivered lectures on fat loss, body composition and behaviour change at St Mary's and Glasgow Caledonian Universities
- Reviewed the latest nutrition studies, summarise their relevance to different populations and outline how the science should be applied in practice

Advisory Board Member & Shareholder - LVL Wellbeing

- Strategise the long-term to the well-being proposition

- Provide expertise and insight

- Enhance the effectiveness of the senior management team

Sept 2021 - Present

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Jason Jackson PT Ltd 2025 ©

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