Since 2005, John has been continually employed as a Consultant Clinical Psychologist within one of the major NHS London Teaching Hospitals. Until July 2017, he also held a Senior Clinical and Managerial position within a South London Mental Health NHS Trust, where he had responsibility for a borough-wide Clinical and Counselling Psychology / Cognitive Behavioural Psychotherapy Service.

Since his qualification as a Clinical Psychologist in 1993, he has assessed and treated thousands of patients, who have presented with a wide range of behavioural and emotional difficulties, and he has had the pleasure of supervising numerous mental health colleagues and psychology trainees, many of whom have gone on to become highly regarded mental health practitioners in their own right, now practicing within the NHS and privately.

John prides himself on providing a professional, approachable and individualised treatment intervention to his therapy clients, as well as a thorough, comprehensive and entirely independent medico-legal service within his expert witness work.