NHS adult autism assessment waiting lists currently run between 2 and 5 years in much of the UK. Many adults reach us after years of suspecting they might be autistic, often having recognised themselves in a partner’s, child’s, or friend’s diagnosis. We provide comprehensive, gender-aware adult autism assessment, typically within a few weeks.
Educational information — not a substitute for clinical assessment
This page describes autism in adults in general terms to help you decide whether assessment may be helpful. It is not a diagnostic tool. If you recognise yourself in what follows, please book a consultation.
Autism is a neurodevelopmental condition affecting how a person experiences the world, communicates, processes information, and interacts socially. It’s present from birth, although diagnosis often happens much later, particularly for women and for adults who’ve developed effective masking strategies.
Autism is a spectrum — presentations vary enormously. Some autistic adults have significant support needs; others live independently, work in senior roles, and only realised they were autistic in adulthood. Many autistic people describe their condition not as a deficit but as a different way of experiencing and processing the world — with both strengths and challenges.
of adults are autistic. The majority of autistic adults in the UK are undiagnosed. Many recognise themselves after a child or partner is diagnosed.
Autism in adults can include features across several domains. You don’t need all of these — presentations vary significantly.
Many adults, particularly women, develop extensive masking — consciously imitating non-autistic social behaviour, suppressing stims, scripting conversations in advance. Masking is exhausting and often contributes to burnout, anxiety, and depression. Many autistic adults seek diagnosis when masking becomes unsustainable.
Autism in women has historically been missed because:
Patterns we commonly see in autistic women:
Our service uses tools and clinical approach sensitive to female-presenting and non-stereotypical autism. We have particular experience in late female diagnosis.
Autism rarely exists alone in adults. We routinely screen for and consider:
Getting the full picture matters for support and treatment.
A confidential 30–45 minute conversation about why you’re seeking assessment, what you’ve recognised in yourself, and whether full assessment is the right next step. Some people leave this appointment having decided they don’t want formal diagnosis — that’s a valid choice.
Validated screening tools completed at home: AQ-10, RAADS-R, Empathy Quotient, Systemising Quotient, sensory profiles, and others as relevant. These structure the discussion at the full assessment.
Autism by definition starts in early childhood. We try to gather evidence from that period — childhood reports, parent input, school information — though we recognise this isn’t always possible. Absence of childhood evidence doesn’t automatically prevent diagnosis but does change the assessment approach.
A 2–3 hour appointment with a clinical psychologist using a structured clinical interview informed by tools such as the ADOS-2 (Autism Diagnostic Observation Schedule), DISCO, or 3Di-Adult. The assessment covers childhood and current functioning across communication, social interaction, repetitive/restricted behaviours, sensory experiences, and quality of life impact.
A clear written report, verbal explanation, and opportunity to ask questions. The report is suitable to share with your GP, employer (if you wish), and any other professionals.
A confirmed autism diagnosis means different things to different people. Common responses include:
We support this process. Some people find brief post-diagnosis psychological support helpful; others process the diagnosis through their own resources.
Autism itself isn’t treated — it’s a way of being, not a disease. What we can support:
Consider booking an initial consultation if:
No. Book directly. With your consent we’ll write to your NHS GP after diagnosis so your records are joined up.
From first contact to diagnostic report typically 2–6 weeks, depending on availability.
Happens occasionally. We’ll explain why, what we’ve considered instead, and signpost to appropriate help. Sometimes people are autistic but don’t meet formal diagnostic criteria — we can discuss this honestly.
Current assessment prices are on our Fees page. The fee is fixed and includes the written report.
Coverage varies. Some UK PMI policies cover adult autism assessment; others exclude developmental assessments. Check with your insurer; we provide procedure codes.
Asperger’s is now subsumed within autism spectrum diagnosis in current diagnostic systems (ICD-11, DSM-5). Many people previously diagnosed with Asperger’s prefer that term; we use whichever language fits you.
Autism itself isn’t treated with medication. Co-occurring conditions (anxiety, depression, ADHD, sleep) often are.
Not automatically. Some people choose post-diagnosis psychological support; some don’t. We’re available if needed but you’re not committed to ongoing care.
That’s reasonable to discuss. Second opinions for autism are legitimate, especially given how often women and adults have been missed. We can review previous assessments and offer fresh evaluation.
Care at MHW Clinic is delivered by a small clinical team, with Dr Haydar Bolat as Clinical Director. The specific clinicians involved in your care depend on the plan agreed with you at consultation.
UK-registered GP and Clinical Director at MHW. Clinical Director of the adult autism assessment service. Assessment is delivered by clinical psychology colleagues using validated diagnostic instruments and structured clinical interview.
View profileLanguages spoken across the team: English, Turkish, Bulgarian, Bengali, Hindi, Albanian, Azerbaijani, German, Romanian. We can also arrange professional telephone interpreters in most other languages at no extra cost. More on languages and interpreters →
This page was reviewed by Dr Haydar Bolat, Clinical Director at MHW Clinic. Content is based on NICE Clinical Guideline CG142 (Autism: recognition, referral, diagnosis and management of adults), the National Autistic Society and Royal College of Psychiatrists guidance, and current UK practice and current UK clinical practice. It is updated when guidance changes. Educational information only — not a substitute for clinical assessment.
A formal diagnosis can give you understanding, validation, and access to support. Book an initial consultation to discuss your situation.