The Bluetree Clinic

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How to Get a Private ADHD Assessment in London or the UK

How to Get a Private ADHD Assessment in the UK (and What It Costs)

Reviewed by Dr Elena Maritan, Consultant Psychiatrist and Medical Director, The Blue Tree Clinic

To get a private ADHD assessment in London, you book directly with a CQC-registered clinic — usually no GP referral is needed — and you are seen by a consultant psychiatrist or specialist who takes a full history, uses validated rating scales, and provides a written diagnostic report. In the UK this typically costs between £999 and £1500 depending on the clinic and what the assessment includes. Most people choose the private route because NHS and Right to Choose waiting lists have grown to years in many areas.

If you suspect you have ADHD, the hardest part is often simply working out how to get assessed without waiting an unacceptable length of time. This guide explains your options in England in 2026, what a thorough assessment should actually involve, what it costs and why prices vary so much, what happens after a diagnosis, and how to choose a clinic you can trust. It is written to help you make a clear, informed decision.

The two routes to an ADHD assessment in England

There are two main ways to be assessed for ADHD as an adult in England, and it is worth understanding both honestly before you spend anything.

The NHS route, including Right to Choose. The NHS provides ADHD assessments free of charge. Under the NHS Constitution, patients in England also have a legal entitlement called Right to Choose, which lets you ask your GP to refer you to any qualifying provider that holds an NHS contract — not just your local service — for your first assessment, still funded by the NHS. For several years this was a genuine fast-track.

In 2026, however, Right to Choose is no longer the reliable shortcut it once was. A surge in referrals, combined with funding caps introduced through the 2026/27 NHS Payment Scheme, has led many Integrated Care Boards (ICBs) to cap or pause new Right to Choose ADHD referrals. Waiting lists in some regions now stretch to several years. The route still exists and is worth exploring if cost is the deciding factor, but you should check whether your local ICB is currently accepting referrals, and what the real wait will be, before assuming it is fast.

The private route. Booking privately means you pay for your assessment but are usually seen within weeks rather than years, you can choose your clinician, and you keep continuity of care afterwards. For many people facing a multi-year NHS wait while struggling at work, in relationships or with daily functioning, the speed and choice are the deciding factors.

Neither route is “better” in the abstract — the right choice depends on how urgently you need answers, your finances, and what is actually available in your area right now.

How much does a private ADHD assessment cost in London?

Private ADHD assessments in the UK generally range from around £999 to £1500. In London, where most specialist clinics are based, fees tend to sit in the middle to upper part of that range. The variation comes down to who carries out the assessment and what is included.

Things that legitimately affect the price:

  • Who assesses you. An assessment led by a consultant psychiatrist (a medical doctor on the GMC Specialist Register) typically costs more than one carried out by a non-medical practitioner — but only a doctor can prescribe and manage medication, which matters if treatment is likely.
  • The depth of the assessment. A thorough evaluation takes time, gathers history from more than one source, and produces a detailed written report. Very cheap, very fast assessments sometimes cut these corners.
  • What happens next. Some fees are for the assessment alone; others include the report, an initial treatment discussion, or the first steps of medication titration. Always ask exactly what your fee covers.

The single most useful question you can ask any clinic is: “What is the total cost, including the assessment, the written report, and any follow-up or titration appointments?” A trustworthy clinic will give you a clear answer without hesitation. Feel free to ask to speak to our clinic manager.

What should a proper ADHD assessment involve?

This matters more than price, because a cheap assessment that produces an unreliable diagnosis helps no one — and a diagnosis that other clinicians do not trust can cause real problems later.

A robust adult ADHD assessment, in line with National Institute for Health and Care Excellence (NICE) guidance, should include:

  • A detailed clinical interview exploring your symptoms now and in childhood, since ADHD is a lifelong condition that begins early.
  • The use of validated, recognised rating scales rather than a quick questionnaire alone.
  • Consideration of your developmental, educational, occupational and family history.
  • Where possible, information from someone who has known you a long time, such as a parent or partner.
  • Careful consideration of other explanations — anxiety, depression, trauma and sleep problems can all mimic or coexist with ADHD, and a good assessor screens for these rather than reaching for the first label.
  • A clear written report explaining the diagnosis (or why ADHD was not diagnosed) and the recommended next steps.

Be wary of any service that offers a diagnosis in a few minutes, relies on a single online questionnaire, or guarantees a particular outcome before assessing you. A genuine assessment cannot promise its own conclusion.

How quickly can you be seen privately?

This is usually the deciding factor. Where NHS and Right to Choose waits can run from many months to several years depending on your area, private clinics typically offer an initial appointment within days to a few weeks. If you are struggling to function day to day, that difference is not a luxury — it is the difference between getting help now and putting your life on hold. We can help within one week to two weeks.

What happens after diagnosis: medication, titration and shared care

This is the part many people do not think about until they are in it, and it is where choosing the right provider really pays off.

If you are diagnosed and medication is appropriate, the next stage is titration — carefully finding the right medication and dose under specialist supervision. This needs proper medical oversight, which is one reason a psychiatrist-led service has an advantage: the same clinical team can diagnose and then safely manage treatment.

Two practical realities to be aware of in 2026:

  • Medication supply. The UK has experienced intermittent shortages of some ADHD medications since 2023. A good clinic will be transparent about this and know how to manage it.
  • Shared care. After private titration, many patients hope their NHS GP will take over ongoing prescribing under a “shared care agreement,” which is usually cheaper long-term. GPs are not obliged to enter shared care, and some decline. Ask any clinic upfront how they handle ongoing prescribing and what your options and costs are if shared care is not available. Clarity here prevents an unwelcome surprise later. [Insert The Blue Tree Clinic’s approach to titration, ongoing prescribing and shared care.]

How to choose a private ADHD clinic

Use the same standards you would apply to any psychiatric care. Check that the clinic is registered with and inspected by the Care Quality Commission (CQC) and look at its rating. Confirm that your assessment will be carried out, or overseen, by a clinician on the GMC Specialist Register. Look for transparent pricing, a clear explanation of what is included, and a sensible plan for what happens after diagnosis. For a fuller checklist, see our guide to finding the best psychiatrist in the UK.

The warning signs are the same as elsewhere in private medicine: unverifiable credentials, guaranteed outcomes, high-pressure booking, suspiciously fast “diagnoses,” and vagueness about cost or follow-up.

How The Blue Tree Clinic approaches ADHD assessment

At The Blue Tree Clinic in Hampstead, North West London, our adult ADHD assessments are led by GMC-registered consultant psychiatrists and follow NICE-aligned best practice — a thorough clinical interview, validated rating scales, careful screening for other conditions, and a detailed written report you can rely on. We are registered with and inspected by the Care Quality Commission and hold a rating of Good across all five domains.

Because our assessments are psychiatrist-led, the same clinical team that diagnoses you can also manage titration and ongoing treatment, giving you genuine continuity rather than a one-off appointment. We are transparent about our fees and what they include from the outset, we typically offer appointments within 1 to 2 weeks, and we see patients in person in London and via secure online consultations.  We will always tell you honestly if we believe a different route is right for you.

Frequently asked questions

How much does a private ADHD assessment cost in the UK? Typically between £999 and £1500 , depending on the clinic and what is included. Always confirm whether the fee covers the assessment, the written report, and any follow-up or titration appointments.

Do I need a GP referral for a private ADHD assessment? Usually not — most private clinics, including The Blue Tree Clinic, accept self-referrals. Sharing your GP history can still help your assessor build a complete picture.

Is a private ADHD diagnosis recognised by the NHS? A diagnosis from a qualified, GMC-registered specialist is a valid clinical diagnosis. However, NHS GPs are not obliged to take over prescribing through shared care, and policies vary. Ask your clinic how ongoing prescribing works before you book.

Can I get an ADHD assessment for free? Yes, through the NHS, including the Right to Choose pathway in England. Be aware that in 2026 many areas have capped or paused Right to Choose ADHD referrals and waits can run to years, so check current availability with your GP and local ICB.

How long does a private assessment take to arrange? Often within days to a few weeks, compared with months or years on NHS lists.

Can the assessment be done online? Many adult ADHD assessments can be conducted via secure video consultation, which works well for most people and speeds things up even further.

Taking the next step

An ADHD diagnosis can be genuinely life-changing — it explains years of struggle and opens the door to effective treatment. The key is choosing an assessment that is thorough, properly qualified and honest about what comes next, rather than simply the cheapest or fastest. Use the questions in this guide, check the credentials yourself, and take the route that fits your circumstances.

If you would like to arrange a private ADHD assessment with one of our consultant psychiatrists, contact The Blue Tree Clinic / book an assessment — we would be glad to help.