Paul Williams is a Training and Supervising Analyst of the British Psychoanalytic Society, a Member of the Royal Anthropological Institute and a Consultant Psychotherapist in the British National Health Service in Belfast. From 2001 to 2007 he was Joint Editor-in-Chief of the "International Journal of Psychoanalysis". He is a Professor at Queens University Belfast and Visiting Professor of Psychoanalysis at Anglia Ruskin University. He has written widely on the subject of personality disorders and psychosis.