Glynn Harrison is Emeritus Professor of Psychiatry, University of Bristol where he was also a practicing consultant psychiatrist and Chair of the Department of Psychiatry.Professionally, his main areas of academic research were in schizophrenia and associated psychotic illness, health service evaluation and epidemiology. He is recent past President of the International Federation of Psychiatric Epidemiology, a past advisor to WHO and he has served on the Chief Medical Officers ‘Health of the Nation’ Working group. His clinical passion was for early intervention and prevention of psychotic disorder. Left untreated, these can be among the most devastating and potentially long term disorders in the field of psychiatry.