Professor of Medicine
- Professor of Medicine (Honorary Consultant Physician in Diabetes, Endocrinology and General Medicine) at University Of Liverpool and Liverpool University Hospitals NHS Foundation Trust
- Deputy Director of the Liverpool (NIHR) Clinical Trials Unit
- Chair of UK NIHR Metabolic & Endocrine Speciality Group
- President of the World Obesity Federation
- He leads Clinical Research in Obesity, Diabetes and Endocrinology at the University of Liverpool where his research covers basic and clinical work with over 35 years experience both as co-investigator or principal investigator