Autism assessment for adults

Before your visit, we’ll ask you to complete forms about your symptoms and early history. These help us gather essential background information. If available, we’ll also review any medical records or school reports you provide.


Patient Referral Form – Helps us understand why you’re seeking an assessment and any needs you’d like to share


Early Development Questionnaire – This should be completed by the key person present during your early years (usually a parent or grandparent). If that’s not possible, let us know and we’ll find another way to help.

You’ll be asked to bring an informant with you to the centre – ideally a parent or the person who completed your Early Development Questionnaire. If that’s not possible, you should bring someone who knows you well, like a sibling, partner, or close friend.

Your informant will be interviewed by our clinicians to gather insights into your history and behaviours. While this happens, you’ll meet with one of our autism practitioners in a private room for some diagnostic tests.


Curious about why we interview an informant or what to do if you don’t have one? See our FAQs.

You’ll now meet with a full team of three specialists for an in-depth discussion. This is a key part of the assessment process, where we gather a more detailed understanding of your life and behaviour. During the interview, the team will ask about various aspects of your daily life, such as your social relationships, hobbies, routines, and how you manage everyday activities. They will also take notes of their observations and use standardised diagnostic tools when needed.

While it may feel like a lot of questions, this is necessary to get a detailed understanding of your life and experiences. Don’t worry if we don’t go over every single detail – the team will focus on what’s most relevant to making an accurate diagnosis.

After the clinical interview, the team will meet to review all the information gathered throughout the assessment. They will consider insights from both your interview and the interview with your informant, using their clinical expertise to assess relevant patterns in your communication, developmental history, social interactions, and other behaviours.

While this happens, you and your informant can take a break in our waiting area. There’s no further input needed from you at this stage, so you can use this time to relax while we assess the information and discuss our findings.

In almost every case, you’ll be told the diagnostic outcome during the same day’s feedback session. You’ll either be diagnosed with Autism Spectrum Disorder (with or without intellectual or language impairment) or No Diagnosis on the Autism Spectrum.

In rare, complex cases, we may need more time to review information. If so, we’ll arrange a follow-up at no extra cost.

Please keep in mind that booking an assessment doesn’t guarantee a diagnosis, and for many, the diagnostic criteria may not be met. Regardless of the outcome, we’ll provide tailored recommendations and guide you toward the right support and resources.

Within a month, you’ll receive a detailed report of your assessment using the World Health Organisation’s ICD-11 classification. If diagnosed with autism, it will outline the criteria met. You’ll also receive a one-page Diagnostic Statement for support at work or in education.

If your assessment was arranged through a third party, such as the NHS, they will also receive a copy. If you arranged your assessment privately, we recommend sharing it with your GP for their records.

Our team is always here to help if you have any questions or need further guidance.