Les qualified in medicine in South Africa in 1983 and obtained his South African Fellowship in Psychiatry in 1991. From an early stage in his career he developed an interest in neurospychiatry, doing work and research in the neuropsychiatric complications of epilepsy. In 1995 Les and his young family relocated to Adelaide for a year. When it became apparent that Adelaide was going to become home, Les sat for his FRANZCP and became a Fellow of the College in 2000. After dabbling in research and academia for a few years, Les came to the acceptance that his true passion lay in working as a clinician and a teacher in the field of neuropsychiatry. He thus transferred from the SA Mental Health Services to work in brain injury rehabilitation and is still attached to the South Australian Brain Injury Rehabilitation Services (SABIRS) as a visiting consultation-liaison neuropsychiatrist. Les tries to apply the principles of developmental and evolutionary neuroscience to his clinical practice of neuropsychiatry, and spends much of his time trying to educate clinicians of all disciplines that these principles of neuroscience when incorporated with neural network theory can form the basis of an empirical and effective clinical framework for understanding and managing all patients.