Margot Waddell, PhD, is a Fellow of the Institute of Psychoanalysis where she is currently the Chair of Publications. She is a child analyst and worked for many years as a consultant child and adolescent psychotherapist at the Tavistock Clinic, London and a much-published author of both books and articles. Dr Sebastian Kraemer is an honorary consultant at the Tavistock and Portman NHS Trust. He was for many years a consultant and trainer of child and adolescent psychiatrists at the Tavistock Clinic, and a psychiatrist in a hospital paediatric department. He continues to write, teach, and work with staff in the NHS and children's services.