Erik de Haan is the director of the Ashridge Centre for Coaching, Hult International Business School, and professor of organisation development and coaching at VU University Amsterdam. He has an MSc in theoretical physics, an MA in psychodynamic psychotherapy, and a PhD in psychophysics, and specialises in team coaching and one-to-one coaching for executives.

Dorothee Stoffels is an experienced Team and Executive Coach and Organisation Development (OD) practitioner. Originally trained in systemic psychotherapy, she takes a keen interest in how organisations function as systems. Her interventions focus on the relational aspects of interactions and change. She is a founding member and director of the Ashridge Team Coaching Programme.