Autism & ADHD Assessments in London (Marylebone)

Library Rooms

4 Manchester Square,
Marylebone,
London,
W1U 3PD

Get directions

Face to face appointments at our London clinic

The Autism Service has been delivering autism and ADHD assessments for both children and adults since 2019.

With over 88,000 people living with autism in London alone, we recognised the need to supply face-to-face appointments at more locations. Waiting months for an autism diagnosis can be stressful and opening our London clinic means private assessments are now more readily available.

Since opening our Marylebone clinic, we’ve been able to increase regional capacity and carry out hundreds of assessments. With our full range of assessments available, we are able to carry out assessments for both autism & ADHD as well as combinations of the two. Crucially, all assessments are available for both children and adults.

Our clinicians deliver fast, accurate diagnostic assessments to identify whether an individual has ASD or ADHD.

Birds eye view of Thames and London Bridge

Why people choose us

  • Our assessment pathways follow national guidance from NICE
  • You will only be seen by clinicians who are professionally regulated in their practice
  • Your assessment will include at least one in-person appointment
  • We use the best available tools to assist diagnosis
  • You will be assessed by a multi-disciplinary team
  • The outcome of the assessment will be recognised by external organisations

What to expect from your assessment

Below, you’ll find links to video resources we’ve put together to help you understand what to expect from the assessment process. If you have any questions at all on our process, please reach out and one of the team will be able to put your mind at ease.

Still of The Autism Service YouTube video

Child ASD Pathway

Still of The Autism Service YouTube video

Child ADHD Pathway

Still of The Autism Service YouTube video

Child Combined Pathway

Still of The Autism Service YouTube video

Adult ASD Pathway

Still of The Autism Service YouTube video

Adult ADHD Pathway

Still of The Autism Service YouTube video

Adult Combined Pathway

GOOD
Google star 1Google star 2Google star 3Google star 4Google star 5.0.4
Based on 180 reviews
Posted on Google Google
Ian Harris profile picture
Ian Harris
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
All the staff and clinicians were very friendly and put you at your ease. The whole process was so reassuring and you were made to feel comfortable at all times.
Posted on Google Google
Jugana Nowak profile picture
Jugana Nowak
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I would highly recommend The Autism Service. Everyone we had contact with was incredibly kind, understanding, empathetic and very helpful. They responded to emails almost immediately, which made the whole process much less stressful for us. My daughter usually does not like talking on the phone or online, but she felt comfortable and opened up during the appointments. She was happy to answer questions, which shows that the staff truly know how to approach and support their patients. Even after the assessment was completed, they continued to be helpful and supportive. We are very grateful for their professionalism and care. I highly recommend this service.
Posted on Google Google
Nicola Loasby profile picture
Nicola Loasby
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Such a positive experience from start to finish. We had been waiting three years for an NHS Assessment and decided to go private for our daughter. From the start, there was a detailed plan in place. I knew what was going on at every stage and the whole process was quick and well informed. We have finally been listened to and have a report that helps us to provide the help and guidance our daughter deserves. Thank you!
Posted on Google Google
graham hussey profile picture
graham hussey
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Very good service and very supportive
Posted on Google Google
Jasmine Glanville profile picture
Jasmine Glanville
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
For a long time we struggled with our son and just knew there was something different about him. After being told NHS waiting times were over 24 months, we felt we had no choice but to go private for the sake of our 9-year-old. At that point, he would have been starting secondary school before we even received a diagnosis, and he was already struggling. As parents, we felt it was our duty to get answers sooner rather than later. Choosing The Autism Service was honestly the best decision we could have made. From start to finish the whole process was smooth, professional, and well communicated. We felt listened to, supported, and reassured every step of the way. I would highly recommend this service to any parent in a similar position.
Posted on Google Google
Alex James Jones profile picture
Alex James Jones
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Fantastic service for the price you pay. Every member of the group were lovely and friendly, with me and my Mam. Helped me to understand why I was different to people, and made me feel safe during the whole process. Thank you all :) x
Posted on Google Google
Katrina D profile picture
Katrina D
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
After waiting nearly 2 years for an nhs autism assessment, I decided to go private. Right from the start the staff at The Autism Service were friendly, knowledgeable, and patient, both over the phone and face to face, and were happy to answer my many many questions before booking with them. They made me feel at ease every step of the way. The assessment itself was extremely thorough, as was the final report. Extremely pleased and grateful for the wonderful service provided. Absolutely recommend to anyone who is still deciding who to go to for an assessment.

How to find us

Our Marylebone clinic is ideally situated on the South-East corner of Manchester Square, offering easy access to public transport. The clinic is only a short walk from both Bond Street and Oxford Circus tube stations. For those driving, there is plenty of on-street parking around Manchester Square and Marylebone, along with several car parks nearby. We pride ourselves on having an inclusive environment, with LGBTQ+ and gender neutral facilities. Wheelchair access is limited at our clinic, therefore, if you require any further assistance, please contact the office directly for further advice.

Getting here

4 Manchester Square,
Marylebone,
London,
W1U 3PD

Get directions
4 Manchester Square,
Marylebone,
London,
W1U 3PD

Meet some of our London clinicians

London clinic FAQs

Our Marylebone clinic is located at the South-East corner of Manchester Square. For those driving, there are plenty of parking options nearby, with car parks within walking distance of the clinic.

There is on street parking around Manchester Square and Marylebone area. The nearest car park is Selfridges Car Park (Selfridges, 400 Oxford St, London W1A 1AB) or the NCP in Portman Square (CitiPark Portman Square, Gloucester Pl, London, W1H 7BG).

Wheelchair access is limited at the clinic. If you require any further assistance, please contact the office directly for further advice.

There is currently no waiting list at any of our clinics. Please call us directly on +44 0300 303 0667 or submit a booking form above for full details. Please note, waiting times can vary throughout the year.

At our London clinic, we offer autism, ADHD and combined ASD/ADHD assessments for both adults and children. Whichever service you choose, you will receive a full face-to-face, NICE-compliant diagnostic assessment.

Find out more about autism & ADHD

Back to School: What actually helps an autistic or ADHD child settle in.

13 Aug, 2026

Back to School: What actually helps an autistic or ADHD child settle in.
The new term brings a lot of change all at once, new uniform, new routine, new noise, new faces, and for an autistic or ADHD …
Autism/ASD
Before the structure slips: preparing for GCSEs, A-Levels, and beyond

13 Aug, 2026

Before the structure slips: preparing for GCSEs, A-Levels, and beyond
Results day. For some families, it’s the end of GCSEs. For others, it’s the end of school altogether. Different moments, but they share something worth …
Autism/ASD
The neurodivergent family’s guide to stress-free holidays

13 Aug, 2026

The neurodivergent family’s guide to stress-free holidays
Most advice about travelling with a neurodivergent child stops at the airport. Pack the comfort item, book the assistance, get through security, and the assumption …
ADHD in Children
What football can teach us about neurodiversity?

10 Jul, 2026

What football can teach us about neurodiversity?
It is quarter-final week, and a good chunk of the country will be watching England take on Norway this Saturday night. Tournaments have a way …
Autism/ASD