How to get an ADHD diagnosis as an adult in the UK

There are three ways to get an adult ADHD diagnosis in the UK.

The first is the NHS standard pathway. Your GP refers you to a local NHS mental health or neurodevelopmental service. Current waiting times average 3 to 5 years in most areas, with some regions reporting waits of 7 or more years. This is the default pathway and the one most GPs will suggest.

The second is the Right to Choose pathway. Your GP refers you to an NHS-funded private provider of your choosing. Wait times are typically 4 to 12 weeks. The NHS pays the full cost. This is your legal right under the NHS Constitution and Section 75 of the National Health Service Act 2006. It applies in England only.

The third is the fully private pathway. You pay a private clinic directly. Costs range from 500 to 1,500 pounds for assessment. No GP referral is needed in most cases. Results are immediate but ongoing medication prescribing can be complicated, particularly if your GP is reluctant to accept a shared care agreement from a private provider.

For both the NHS and Right to Choose pathways, you start with your GP. Book an appointment and explain that you would like a referral for an ADHD assessment.

Be specific about your difficulties. GPs are more responsive to concrete examples than general statements. Instead of "I think I have ADHD," try: "I have persistent difficulties with focus, organisation, and time management that are affecting my work and relationships. I would like to be assessed for ADHD."

If you want to use the Right to Choose, state this explicitly. Say: "I would like to exercise my Right to Choose and be referred to [provider name]." Common Right to Choose providers include Psychiatry-UK, Clinical Partners, and ADHD 360. Check your preferred provider's current availability before your appointment.

Bring evidence if you can. A completed ASRS-v1.1 screening showing a score above the clinical threshold is useful. School reports, if you still have them, can support your case. Written examples of how ADHD affects your daily life and work are helpful.

Some GPs are unfamiliar with the Right to Choose or reluctant to refer. If your GP refuses, we have a separate guide on what to do.

Regardless of pathway, the assessment typically involves the following.

A comprehensive clinical interview lasting 1 to 2 hours. This covers your current symptoms, developmental history, educational history, work history, relationships, and the functional impact of your difficulties. The assessor is looking for a lifelong pattern, not just current struggles.

Standardised screening questionnaires, often sent before the appointment. These may include the DIVA-5, the Conners Adult ADHD Rating Scale, or the ASRS.

An informant report from someone who knew you as a child, typically a parent, sibling, or older family member. This helps establish that your difficulties were present in childhood, which is a diagnostic requirement. If this is not available, most providers will proceed without it. Some accept school reports as an alternative.

The assessor uses DSM-5 or ICD-11 diagnostic criteria. They are looking for persistent inattention and/or hyperactivity-impulsivity that causes clinically significant impairment across multiple settings.

A diagnosis is not guaranteed. The assessment is an honest clinical evaluation. If ADHD is not the right diagnosis, a good assessor will explore what else might explain your difficulties. This is not a failure. It is clarity.

ADHD and autism co-occur frequently. Estimates vary, but around 30 to 50 per cent of autistic people also meet criteria for ADHD. If you suspect both, tell your assessor.

Some providers assess for both conditions simultaneously. Others focus on one at a time. If you receive an ADHD diagnosis and still suspect autism, you can request a separate autism assessment through the same pathways.

Taking both screening tools before your GP appointment can help. The ASRS-v1.1 screens for ADHD. The AQ-10 screens for autism. Both are available free on this site. Having scores from both gives your GP and assessor a clearer picture of what to evaluate.

If you receive an ADHD diagnosis, several things happen.

The provider sends a diagnostic report to your GP. This becomes part of your permanent medical record.

If medication is recommended, the provider starts titration. This is the process of finding the right medication at the right dose. It typically takes 4 to 12 weeks. We have a separate guide on what to expect during titration.

Once you are stable on medication, prescribing transfers to your GP under a Shared Care Agreement. Your GP handles repeat prescriptions and routine monitoring. Your specialist remains available for advice.

Beyond medication, a diagnosis makes you eligible for several forms of support. Personal Independence Payment provides financial support if ADHD affects your daily living or mobility. It is not means-tested. Access to Work provides government-funded workplace support including ADHD coaching, assistive technology, and support workers. Reasonable adjustments at work are your legal right under the Equality Act 2010.

A diagnosis is not the end. It is the beginning of understanding how your brain works and building a life that works with it.

"What if the assessor says I do not have ADHD?" Then you have ruled something out. That has value. If your difficulties are real, the answer is not to stop looking. It is to look elsewhere. Depression, anxiety, PTSD, autism, and sleep disorders can all mimic ADHD symptoms.

"Will a diagnosis go on my record?" Yes. It becomes part of your medical record. This is generally a good thing. It ensures you receive appropriate treatment and support. It does not appear on DBS checks. It cannot be used against you by employers.

"Will medication change who I am?" No. ADHD medication does not alter your personality. It reduces the noise that prevents you from being yourself. If a medication makes you feel flat or unlike yourself, that is a sign the dose is wrong, not that medication is wrong for you.

"I have managed this long without a diagnosis. Do I really need one?" That depends on whether "managing" is the same as thriving. Many adults with undiagnosed ADHD are surviving at enormous personal cost. A diagnosis does not mean you are broken. It means you stop spending energy pretending the struggle does not exist.