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Dr (Peter) Quinton Deeley is a Consultant Psychiatrist and Senior Lecturer at South London and Maudsley NHS Foundation Trust and he also sees patients privately, including at, The Harley Street Clinic, 21 Wimpole Street and The Nightingale Hospital in London.

He is an honorary consultant psychiatrist in the National Autism Unit, Adult ADHD Service, and Behavioural Genetics and Autism Assessment Clinic and a Senior Lecturer in Social Behaviour and Neurodevelopment at the Institute of Psychiatry, King's College London.

He has wide experience of general adult and developmental psychiatry and he specialises in the assessment and management of autistic spectrum disorders, attention deficit hyperactivity disorder, learning disability, as well as conditions such as depression, anxiety disorders, psychosis, OCD and dependence syndromes.

He undertook medical training at Guys and St Thomas' Hospitals before training in psychiatry on the Maudsley Hospital training scheme. He has a PhD in the cognitive neuroscience of autism and psychopathy, in addition to a Bachelor of Arts degree in Theology and Religious Studies from Cambridge University. Dr Deeley is a member of the Royal College of Psychiatrists.

He is also active in research, including cross-cultural psychiatry and social and cultural neuroscience. Further, he researches biological, psychological, and social influences on development, particularly in relation to disorders such as autism, ADHD, conduct disorder, personality disorders, and psychosis. Dr Deeley's educational role includes undergraduate and postgraduate medical teaching, as well as on MSc courses.

• Autism
• ADHD
• Learning Disability