Welcome to Clinic Autism, your trusted partner in providing expert Autism and ADHD assessments for all ages. Clinic Autism I Assessment, Diagnosis and Support . At Clinic Autism London, we provide comprehensive private autism assessments in London for children, young people, and adults. Our multidisciplinary team offers gold-standard autism assessment, ADHD assessment, occupational therapy (OT) assessment, and speech and language therapy, all aligned with NHS and NICE guidelines.