David Kennard is head of psychology and psychotherapy at The Retreat and director of the Tuke Centre for Psychotherapy and Counselling, both in York. Jeff Roberts retired early as a consultant psychotherapist at the Royal London Hospital, and he is a member of management of the Group-Analytic Practice. David A. Winter is head of clinical psychology services and coordinator of research for Barnet Healthcare NHS Trust and visiting professor of psychology at the University of Hertfordshire.