John R.E. Fox is Professor of Clinical Psychology and Programme Director of the Sheffield DClinPsy programme. He is Co-Editor-in-Chief of Psychology and Psychotherapy: Theory, Research and Practice and has over 20 years' clinical and academic experience in eating disorders.

Marc O. Williams, DClinPsy, PhD, is a Clinical Psychologist, Senior Lecturer, and Co-Editor-in-Chief of Psychology and Psychotherapy: Theory, Research and Practice. His expertise spans eating disorders and climate change-related mental health.