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How Much Does an ADHD Assessment Cost in the UK? (2025 Prices)

October 31, 20253 min read

You've spent years wondering why tasks others find simple feel borderline impossible to you. The scattered thinking, the chronic disorganisation, the way time seems to slip through your fingers; you've blamed yourself for all of it. But what if these struggles aren't flaws?

If you’ve already recognised the subtle signs of ADHD, a diagnosis can be not only affirming but, in some cases, life-changing. Understanding your diagnosis allows you to look into management systems, including medication, therapy, and even tailored ADHD coaching.

How Much Does an ADHD Assessment Cost?

If ADHD makes sense to your experience, you may be wondering how much a diagnosis will cost. The truth is that ADHD assessment costs in the UK can vary depending on the route you choose. While there is an NHS option, private services are often faster and more detailed.

As an adult, you can expect to pay between £700 and £1,400, while childhood assessments tend to cost a little more at between £900 and £1,700. When you’re considering getting a diagnosis, look for a private assessment service that ticks all of your boxes.

The NHS Route: Free But at What Cost?

You can get ADHD assessments on the NHS. The first step to accessing this service is to speak to your GP and describe the symptoms. If your GP believes that you may have ADHD, they will then refer you to a diagnostic service. The process is funded by the NHS, meaning you don’t have to pay for it. However, it’s rarely a quick and easy process.

Waiting times can vary, depending on where in the country you live, with some people waiting several months or even years. While the Right to Choose scheme allows you to find a clinic with a shorter wait-time, but there’s no guarantee of availability. All of the above means that people often find themselves waiting a long time to get the assessment they need.

Private Route: Faster and More Detailed

At Autism Services Group, we offer accessible, simple ADHD assessments for both children and adults. The total cost for this diagnostic service is £950.

Simple diagnostic process

Our evidence-based approach is both fast and discreet. Simply reserve a package, complete an initial questionnaire, and then we will complete an in-depth clinical evaluation.

Top-tier clinicians give you the answers you’ve been looking for, and guide you through the straightforward diagnostic process. We offer an official written ADHD diagnosis, which is recognised by both employers and medical services.

Expert aftercare advice

When you have your ADHD diagnosis, we tailor our recommendations to your specific situation. We can suggest next steps including educational support, community services, coaching, and therapy. Based on our evaluation, our team will provide the support and clarity you need.

Frequently Asked Questions (FAQs)

Do you need a GP referral to get an ADHD diagnosis?

You will need a GP referral to get a diagnosis via the NHS. However, if you go down the private route and fund the assessment yourself, you will not need a referral.

Will my GP accept a private ADHD diagnosis?

Yes. Most GPs will accept a private ADHD diagnosis, as long as it comes from a qualified clinician. Our ADHD reports are accepted by health services.

Will my workplace accept the ADHD report?

Yes. Your ADHD report can be shared with an employer and used to request reasonable adjustments in the workplace. Our team can also provide supporting letters, if needed.

Takeaway

Waiting to get your ADHD diagnosis can be frustrating, especially if you’ve spent years wondering. Don’t let the cost of ADHD assessments in the UK hold you back. You can split the fee over three payments to make it more manageable. Contact us now and arrange a free call to find out more.


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