Richard Bennett works as a Clinical Psychologist and Cognitive Behavioural Psychotherapist and is an Associate Professor of Psychology at the University of Birmingham. He runs a private therapy practice, Think Psychology, and ACTivatingYourPractice.com, offering ACT training and supervision.

Joseph E. Oliver is a Consultant Clinical Psychologist, Associate Professor at UCL, and founder of Contextual Consulting, providing ACT-focused training, supervision, and therapy.