How to get an ADHD or autism diagnosis in the UK

Receiving an ADHD or autism diagnosis can be life-changing, not just for the individual, but for the whole family. These neurodevelopmental conditions can affect many parts of daily life, from school and work to friendships, routines and emotional wellbeing. The path to diagnosis often starts with questions or concerns, maybe a gut feeling that something’s different. When a diagnosis finally comes, it can bring a mix of emotions: relief, grief, validation, even overwhelm. But most of all, it brings clarity.

Getting a formal assessment helps explain behaviours that may have felt confusing or frustrating, and it shines a light on both challenges and strengths. It opens the door to support, therapy, adjustments at work, university or school, and can even improve relationships. For many, it brings clarity to years of self-doubt. Most importantly, it invites a shift in mindset – from trying to ‘fix’ a problem to understanding yourself more deeply. Wired differently, and that’s a good thing… right?

For many individuals and families, this understanding becomes the foundation for stronger advocacy, deeper connection and a genuine celebration of neurodiversity. To be neurodivergent and proud of it.

Embracing ADHD and autism without apology  

In recent years, ADHD and autism have been showing up more in everyday conversations — on social media, in schools, at work, and around the dinner table. This growing visibility is helping break down stigma and shift how we think about neurodiversity. As more people learn about these conditions, we’re not just noticing the signs in ourselves or our kids — we’re also beginning to better understand and appreciate the unique strengths that often come with being neurodivergent.

“People with ADHD can struggle with significant disruption to their personal and professional lives if the condition is left untreated. It’s good to see public awareness of the disorder has grown and that more people are coming forward for a diagnostic assessment and treatment.” 

Dr. Peter Carpenter from the Royal College of Psychiatrists highlights the increasing demand for ADHD assessments and the importance of early diagnosis (Royal College of Psychiatrists, n.d.). 

While increased awareness and reduced stigma are undoubtedly a good thing, it has resulted in greater demand for ADHD and autism assessments nationwide. Since 2019, there has been a fivefold increase in people waiting to see an autism specialist and a 400% rise in adults seeking an ADHD diagnosis.    

NHS assessments 

To get an ADHD or autism assessment through the NHS, the first step is usually to speak to your GP. For children and young people, this often leads to a referral to services like CAMHS (Child and Adolescent Mental Health Services). For adults, your GP may refer you to a community mental health team or a specialist neurodevelopmental service. These assessments are thorough and fully funded by the NHS.

However, demand for support has grown significantly, and NHS services are struggling to keep up. This has led to extremely long waiting times, limited appointment availability and little flexibility when it comes to choosing your clinician or appointment time. 

According to NHS England Digital (2024), over 212,000 people were waiting for autism assessments as of December 2024. While there’s no single national figure for ADHD waiting lists, the NHS estimates that nearly 200,000 people are currently waiting for an assessment. 

Benefits of NHS assessments:

• Free of charge: No direct cost to the patient. 

• Integrated NHS care: Access to other public services and follow-up options. 

• Recognised diagnosis: Widely accepted by schools, employers and healthcare providers. 

• Standardised assessments: Follow national clinical guidelines (NICE). 

Considerations of NHS assessments: 

• Long wait times: Often between one to three years, sometimes longer.  

• Limited flexibility: Less choice over appointment times or which clinician you see. 

• Strict referral processes: For some, getting a referral can be a challenge due to high demand and limited service capacity. 

What to expect during an ADHD or autism assessment 

Whether you’re seeking an ADHD or autism assessment for yourself or your child, understanding what happens during the process can ease anxiety and help you feel more prepared. While this may differ depending on your chosen route and provider, you can generally expect the following key stages: 

Choosing Xyla as your private provider means you can access high-quality ADHD and autism assessments entirely online, offering trusted, clinically assured support from the comfort and privacy of your own home. With a proven track record of delivering thousands of remote assessments, Xyla also provides expert post-diagnostic care to ensure you feel supported every step of the way.

Why choose Xyla for your ADHD or autism diagnosis?  

Choosing a private provider is a big step, and it’s important to feel confident in who you trust. At Xyla, we make the process easier to access, supportive and clinically excellent. 

Our assessments are led by experienced clinicians who also work in the NHS and follow the same national clinical standards, including NICE guidelines. That means you’ll receive a trusted, recognised diagnosis, without the long wait. Our fully virtual services mean assessments can be completed from the comfort of your home with flexible appointment slots that fit around your life. 

We offer: 

• Virtual assessments, available in weeks (no GP referral required) 
• Expert assessments led by clinicians who work across both the NHS and private sector
• Recognised diagnostic reports for schools, employers and healthcare professionals 
• Tailored post-assessment guidance, helping you navigate your next steps 

Moving forward with confidence 

For many individuals and families, the decision to go private is driven by the need for answers. While the NHS remains a valuable route for many, private assessments can be a lifeline, particularly when long waits are impacting education, work or mental health. 

If you’re exploring private assessment options, choosing a provider like Xyla means you don’t have to compromise on clinical quality while benefiting from faster access, greater flexibility and post-diagnostic support. 

If you’re ready to take the next step, Xyla is here to help 

You don’t have to wait years or even months for clarity. With Xyla, early assessment means earlier support, so everyday life feels less overwhelming and a lot more manageable.