The adult autism assessment process typically involves an initial clinical interview lasting around 90 minutes to two hours, followed by the completion of structured diagnostic tools and, where possible, gathering information about your developmental history from a parent, family member, or long-term acquaintance. A feedback session and comprehensive diagnostic report are provided within a few weeks of completing the assessment.

Absolutely. Many adults come to us after years of struggling with anxiety, depression, ADHD, or other difficulties without understanding that autism could be the underlying factor. Our assessments are designed to explore lifelong patterns and provide a fresh, thorough evaluation , whether or not you have had previous diagnoses. We welcome self-referrals and referrals from GPs, therapists, and other healthcare providers.

After an autism diagnosis, we provide a detailed feedback session and a full written report, including personalised recommendations. This may include referrals for autism-specific therapies, workplace accommodations, support for social communication challenges, and guidance on managing sensory sensitivities. We also offer post-diagnostic support options to help individuals better understand their diagnosis and build confidence in their strengths.

Yes, at Harley Street Mental Health, our clinicians are highly trained to recognise the wide range of autism presentations. We understand that autism can look very different in women, non-binary individuals, and people from culturally diverse backgrounds. Many adults may mask or camouflage their symptoms, leading to missed diagnoses earlier in life. Our team uses an inclusive, neuroaffirmative approach to ensure that all individuals are assessed thoroughly, respectfully, and accurately.

No, autism is a well-researched neurodevelopmental condition that affects communication, social interaction, sensory processing, and behaviour. While public awareness of autism has grown in recent years, this reflects progress in understanding rather than an artificial “trend.” Autism has been recognised in the medical community for decades, and increasing diagnoses are largely due to better identification , especially among adults, women, and minority groups , not overdiagnosis or mislabelling.

Despite misconceptions, autism is underdiagnosed, not overdiagnosed, particularly in adults. According to the National Autistic Society, around 1% of the UK population is thought to be autistic, but many adults , particularly women and those from diverse backgrounds , remain undiagnosed or are misdiagnosed with other conditions. Increased awareness and better diagnostic tools have helped more adults seek answers, but many still face significant barriers to diagnosis. Our service is designed to provide careful, evidence-based assessments that avoid both underdiagnosis and overdiagnosis.

Harley Street Mental Health is recognised for providing some of the best adult autism assessments in the UK, with a reputation for exceptional clinical standards, compassionate care, and detailed, evidence-based diagnostic reports. Our assessments are tailored to identify autism presentations across all genders and cultural backgrounds, ensuring an inclusive and accurate diagnosis. We focus on supporting adults who may have been missed in childhood or whose autism traits have been masked over time.

An adult autism assessment at Harley Street Mental Health is a thorough, evidence-based evaluation designed to identify signs of Autism Spectrum Disorder (ASD) in adults. Our expert psychiatrists and psychologists use gold-standard tools such as the ADOS-2 and structured clinical interviews to explore developmental history, social communication patterns, sensory differences, and daily life experiences. We provide detailed diagnostic reports and clear guidance on post-diagnostic support, helping adults receive the understanding and care they deserve.