About this paper
The Ambassadors Case Study Book presents the PHC's flagship community-delivery model. Launched in September 2017 with 60 volunteers and now grown to more than 250, the programme trains lay Ambassadors to run free 8-week Real Food Lifestyle courses in or alongside NHS GP practices, community venues and online.
Dr David Unwin, chair of the PHC Scientific Advisory Committee, writes the foreword. He frames the programme as a pragmatic solution to a global metabolic-health crisis in which, by PHC's estimate, only one in eight adults in the developed world enjoys good metabolic health. His own Norwood Surgery experience — more than 150 patients with drug-free T2D remission — seeds the evidence base.
The booklet describes the programme's stakeholder model: GP surgeries refer eligible patients and retain clinical oversight; Ambassadors deliver the structured 8-week course covering minimising ultra-processed foods, carbohydrate reduction and nutrient-dense real-food meals; the PHC centrally provides training, materials and evidence updates; and patients engage and self-manage.
Headline outcomes are quantified in a results table: 5–15 kg weight loss over 6–12 months, HbA1c reductions of 10–30 mmol/mol, fasting glucose frequently returning to non-diabetic range, blood-pressure normalisation, and medication reduction or discontinuation. Patient case studies put personal stories behind those averages.
For GP practices, the book argues the programme reduces routine-appointment burden, lowers prescribing costs and lifts clinician satisfaction. A 2022 Integrated Care Board report by Dr Unwin calculates savings of £68,000 per practice per year on diabetes drugs alone, with a national extrapolation of £441 million/year if adopted across NHS England.
The booklet closes with a call to action — a vision of a PHC Ambassador in every village, town and city, and an ally in prevention at every GP surgery. It is positioned both as a practical onboarding guide for practices and as an evidence-anchored case that grassroots, real-food community education is a viable pillar of NHS prevention strategy.