Glenn Waller is a Professor of Clinical Psychology at University of Sheffield. His clinical and academic specialisms are evidence-based CBT for eating disorders, and why clinicians drift from effective treatment. He has published over 330 peer-reviewed papers, 20 book chapters and five books in the field. He regularly presents workshops at national and international meetings.

He is past Chair of the BABCP Scientific Committee, past President of the international Academy for Eating Disorders, and current President of the Eating Disorders Research Society. He is on the editorial board of several journals, including Behaviour Research and Therapy.

He was a member of the NICE Eating Disorders Guideline Development Group, responsible for the 2017 update to the eating disorders guideline. He is Director of the HEE-funded training course for CBT-ED practitioners in the north of England.