I worked in the NHS for nearly 40 years as a general psychiatrist and later a consultant psychotherapist. I began the first clinic in the world for the assessment of autistic adults in 1980. I am an existential psychotherapist and a group analyst. I am an Emeritus Professor of Psychiatry in the University of Sheffield; a Visiting Professor of Psychology at Middlesex University; and Deputy Principal of the New School of Psychotherapy in London, where I am course leader for the MA in Diversity Studies.