James is Professor of Metabolic Physiology at the University of Bath, where he is Co-Director of the Centre for Nutrition, Exercise & Metabolism and Chair of the Department for Health Research Ethics Committee. His research employs randomised controlled trials to study the effects of nutrition on metabolic regulation, the findings of which have been published in scientific papers in top-ranking scholarly journals. A particular focus of his work has been to examine the links between nutrient timing and human health, for which James was awarded the Nutrition Society Cuthbertson Medal at the Royal Society of Medicine for 'excellence in clinical nutrition and metabolism research'. James contributes widely within the University, having supervised many doctoral students through their research training; his integration of research into teaching was recognised by the University's Mary Tasker Award for excellence in teaching.

Co-Director of the Centre for Nutrition, Exercise and Metabolism (CNEM)

Chair of the Department for Health Research Ethics Committee.

Editor-in-Chief of the International Journal of Sport Nutrition & Exercise Metabolism.

Editorial Advisory Board of the British Nutrition Foundation Nutrition Bulletin.

Fellow of the American College of Sports Medicine.