Private ADHD Assessment in the UK: What You Need to Know Before Paying

When the Wait Becomes Unbearable

Let me be honest with you: the NHS ADHD assessment system in the UK is broken. Waiting lists of three to five years are not uncommon, and for many people, that is simply too long to wait when your life feels like it is unravelling.

So you start googling "private ADHD assessment UK", and suddenly you are staring at a dizzying array of clinics, price ranges, and promises. Some charge £500, others £1,500. Some offer assessment in two weeks; others in two months. And you are wondering: is this worth it? Is it legitimate? Will my GP even accept it?

I have worked with clients who have gone through private assessment, NHS assessment, and Right to Choose. Every pathway has its pros and cons, and what is right depends on your circumstances. This guide will help you make an informed decision.

What Does a Private ADHD Assessment Actually Cost?

Costs vary significantly depending on the provider, location, and what is included. Here is a rough breakdown as of early 2026:

Some providers offer payment plans or reduced fees. It is always worth asking.

Watch out for hidden costs: Some clinics charge separately for the diagnostic report, follow-up appointments, or medication titration. Ask upfront exactly what is included in the quoted price so there are no surprises.

What Should Be Included in a Proper Assessment

Whether you pay £500 or £1,500, a legitimate ADHD assessment should include:

Before the appointment:

• Pre-assessment questionnaires (DIVA 5.0, ASRS, or similar validated tools)
• An informant questionnaire for someone who knew you as a child
• Request for supporting evidence (school reports, etc.)

During the appointment:

• A structured clinical interview lasting at least 60 minutes (ideally 90+)
• Assessment of symptoms across both inattention and hyperactivity-impulsivity domains
• Exploration of childhood history
• Differential diagnosis, considering whether symptoms could be explained by other conditions
• Discussion of functional impairment across multiple life areas

After the appointment:

• A written diagnostic report
• Clear recommendations for treatment and support
• A letter for your GP (especially important for shared care agreements)

If a provider is offering a 20-minute video call for £300 and calling it an assessment, that is a red flag. The assessment should be thorough enough to meet NICE guidelines (NG87) for ADHD diagnosis.

Choosing a Provider: What to Look For

Not all private providers are equal. Here is what to check:

Clinician Qualifications

The person conducting your assessment should be a psychiatrist (ideally with ADHD specialism), a clinical psychologist, or a specialist ADHD practitioner with appropriate training. Check their registration with:

• General Medical Council (GMC), for psychiatrists
• Health and Care Professions Council (HCPC), for psychologists
• Care Quality Commission (CQC), the clinic itself should be CQC registered if operating in England

Reviews and Reputation

Look for reviews from real patients. ADHD communities on Reddit, Facebook, and other platforms are often honest about their experiences with different providers. Be cautious of clinics with no reviews or only glowing testimonials on their own website.

GP Acceptance

This is crucial. Before committing, ask the provider: "Will my GP accept this diagnosis for shared care?" Some providers have better relationships with NHS GPs than others. Established providers like Psychiatry-UK (also available through Right to Choose), The ADHD Centre, and Clinical Partners tend to have smoother shared care processes.

What Happens After Diagnosis

Some clinics diagnose you and then effectively disappear. The best providers offer:

• Medication initiation and titration support
• Follow-up appointments
• Clear communication with your GP
• Guidance on next steps for support and accommodations

The GP Shared Care Question

This is probably the single biggest concern people have about going private, and rightly so. Here is how it works.

What Is Shared Care?

If you are diagnosed privately and prescribed medication, the private clinician will typically manage the initial titration period (adjusting your medication dose). Once your medication is stable, they will write to your GP asking them to take over prescribing under a shared care agreement.

This means:

• The specialist sets the treatment plan
• Your GP prescribes the medication on an ongoing basis
• The specialist remains available for advice if needed

Will My GP Accept It?

This is where it gets complicated. GPs are not legally required to accept shared care agreements. In practice, most do, but some refuse, particularly if:

• They are unfamiliar with the private provider
• They have concerns about the quality of the assessment
• They have a blanket policy against private shared care (which is increasingly frowned upon by NHS guidance)

What to do if your GP refuses:

1. Ask for their specific concerns in writing, this often prompts a reconsideration
2. Provide the full diagnostic report, a thorough report from a qualified clinician is harder to dismiss
3. Reference NICE guidelines, NICE NG87 recommends that GPs should accept specialist recommendations regardless of whether the specialist is NHS or private
4. Escalate to your ICB, your local Integrated Care Board can intervene if a GP is unreasonably refusing shared care
5. Register with a different GP practice, sometimes the easiest solution

Recent policy changes: NHS England has been tightening guidance around private ADHD diagnoses, particularly following concerns about the quality of some online assessment services. This means some GPs are being more cautious, but it also means that thorough, well-documented assessments from reputable providers are more important than ever.

Private vs NHS vs Right to Choose: How Do They Compare?

For most people in England, I genuinely recommend trying Right to Choose first. It is free, the assessment quality is good, and the shared care pathway is more established. Private assessment makes most sense when:

• You need answers urgently and cannot wait 6-12 months
• You are outside England where Right to Choose does not apply
• You have already tried Right to Choose and been unable to access it
• You want a specific clinician or in-person assessment

Red Flags to Watch For

Not every private ADHD clinic has your best interests at heart. Be cautious of:

• Very short assessments, anything under 45 minutes is insufficient for a thorough evaluation
• No pre-assessment paperwork, a proper assessment includes validated screening tools
• No informant report requested, while it is possible to assess without one, not even asking is a concern
• Guaranteed diagnosis, no ethical clinician can guarantee you will be diagnosed before assessing you
• Pressure to purchase additional services, your diagnosis should not be contingent on buying a coaching package
• No CQC registration, in England, check the CQC register
• Clinician not appropriately qualified, always verify their professional registration

The Emotional Side of Going Private

Something nobody talks about enough: the guilt and the doubt. Paying for an ADHD assessment can feel conflicting. You might wonder:

• "Am I just buying a diagnosis?"
• "Would I have been diagnosed on the NHS?"
• "Is my diagnosis less valid because I paid for it?"

Let me be really clear: no. A private diagnosis uses the same criteria, the same tools, and (in reputable clinics) the same calibre of clinician. You are not buying a diagnosis, you are paying to skip a broken queue. There is an enormous difference.

The NHS waiting list is not long because assessments are more thorough. It is long because the system is underfunded and overwhelmed. Choosing to go private is a practical decision, not a moral failing.

What to Do After Your Private Diagnosis

Once you have your diagnosis in hand:

1. Read your report thoroughly, understand your specific presentation and recommendations
2. Share it with your GP, book an appointment to discuss shared care and medication if relevant
3. Register with disability services, if you are at university, your diagnosis qualifies you for DSA and accommodations
4. Tell your employer (if you choose to), you are protected under the Equality Act 2010 and can request reasonable adjustments
5. Consider mentoring or coaching, a diagnosis is the start, not the end. Practical support helps you build on that understanding. Take a look at my mentoring services to see how I can help.
6. Connect with the ADHD community, groups like ADHD UK, ADDA, and online communities can be incredibly validating

Diagnosis Is Just the Beginning

Whether you go private, NHS, or Right to Choose, the assessment is one appointment. For a full overview of every pathway, read my guide to ADHD diagnosis in the UK. What matters far more is what you do with the understanding it gives you.

If you have been recently diagnosed, or you are still deciding whether to pursue assessment, and you want help figuring out your next steps, book a free consultation. I work with people at every stage of the ADHD journey, and I would genuinely love to help.