Prof McAllister-Williams obtained his qualification in medicine, and a PhD in Neuropharmacology, at the University of Edinburgh, Scotland. He moved to Newcastle University, England, in 1995 and was awarded a UK Medical Research Council Clinician Scientist Fellowship to investigate the pathophysiology of affective disorders, completing a research MD degree. In 2004 he was appointed a Reader in Clinical Psychopharmacology and then in 2017 Professor of Affective Disorders. He is the Lead for the Mental Health, Dementia and Neurodegenerative Disorders Research Theme. Clinically, he leads a tertiary level specialist affective disorders service in the Cumbria, Northumberland Tyne and Wear NHS Foundation Trust.