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Our experts

Our expertise

There’s a fantastic team at our Central Office supporting our Counsellors and Mentors, who run our life-changing LighterLife CBT groups and free Xpress Slimming Club meetings. We all live and breathe LighterLife – it’s not hard to be so passionate when you know that, whatever your role, you’re helping to make an amazing difference to so many lives. We also make sure we have the very best experts and talent in every department – ranging from highly qualified scientists and nutritionists to IT bods with decades of experience of turning computers on and off again!

Meet the team

Because LighterLife is much more than just a diet, our experts are drawn from both a medical and a psychological background.

Jackie Cox

An obese child, teenager and adult, with two psychology degrees and over two decades of counselling, LighterLife co-founder Jackie brings unique expertise to LighterLife and its ongoing development.

Bar Hewlett

With a background in science and teaching, years of working with groups and personal understanding of obesity, Bar helped co-found LighterLife and continues to use her knowledge and experience to develop LighterLife for the benefit of all.

Dr Kelly Johnston

Dr Kelly Johnston is our Head of Nutrition and Research and a Visiting Senior Lecturer at King’s College London. Her research interests are nutrition and gut physiology, obesity management, and the impact of diet on metabolic syndrome and other obesity-related co-morbidities.

Dr Matt Capehorn

Dr Matt Capehorn has a specialist interest in obesity management and is the Medical Director at LighterLife. Matt has been on various advisory boards, is a full time GP and is the clinical manager at the Rotherham Institute for Obesity.