Dennis Brown, psychiatrist, analyst and group analyst was a leading figure in the field of group analysis and for many years worked both in the NHS and at the Group-Analytic Practice. With vast experience in the treatment of psychosomatic as well as psychological / psychiatric conditions, he taught internationally and was read widely. He co-authored Introduction to Psychotherapy: an outline of psychodynamic principles and practice. He was a founder member of the Routledge International Library of Group Psychotherapy. He was an important contributor in the development of psychotherapy services in the Health Service. Jason Maratos is a psychiatrist for children and adolescents and a group analyst based at The Group-Analytic Practice. In his work he integrates the discoveries of medicine, psychiatry (and the findings of developmental psychology), psychoanalysis and group analysis with philosophical trends from Aristotle to the post-modernists. He has published and lectured in the UK, Europe and South America.