Quick answer: A private ADHD assessment is a paid evaluation carried out by a qualified psychiatrist, clinical psychologist, or specialist ADHD clinic outside the NHS. It typically involves a detailed clinical interview, standardised questionnaires, and a review of your developmental history, and can cost anywhere from a few hundred to over a thousand pounds. To find a reputable provider, check their regulatory registration, clinician qualifications, and whether they follow NICE guidance before booking.
Long NHS waiting lists have pushed many adults and parents in the UK towards private ADHD assessments. For some, it’s the only realistic way to get a diagnosis within a reasonable timeframe. But navigating the private healthcare market can feel overwhelming, especially when you’re trying to work out which providers are trustworthy and which corners might be cut.
This guide walks you through what a private ADHD assessment actually involves, what it should cost, and the checks you need to make before handing over your money. Whether you’re exploring in-person clinics or online services, understanding what “good” looks like will help you make a confident, informed decision.
What is a private ADHD assessment?
A private ADHD assessment is a clinical evaluation, paid for directly or through private health insurance, used to determine whether someone meets the diagnostic criteria for Attention Deficit Hyperactivity Disorder. It sits outside the NHS pathway, which means you can usually book an appointment far sooner than waiting for an NHS referral.
The assessment should be comprehensive. A rushed, tick-box process is a red flag. According to the National Institute for Health and Care Excellence (NICE), a proper ADHD diagnosis requires a full clinical assessment that considers symptoms, their impact on daily life, and evidence that symptoms have been present since childhood (NICE, NG87).
Who can provide a private ADHD assessment?
ADHD diagnoses in the UK must be made or confirmed by an appropriately qualified healthcare professional. This typically includes:
- Psychiatrists, particularly those specialising in general adult psychiatry, child and adolescent psychiatry, or neurodevelopmental conditions.
- Clinical or specialist psychologists working within multidisciplinary ADHD services.
- Specialist nurses in some cases, working under the supervision of a consultant psychiatrist.
Any clinician making a diagnosis should be registered with the General Medical Council (GMC) if they’re a doctor, or the Health and Care Professions Council (HCPC) if they’re a psychologist. You can verify a clinician’s registration status directly on the GMC or HCPC websites before booking.
What should you check before booking an assessment?
Before committing to a provider, it’s worth doing some groundwork. Consider checking:
- Regulatory registration: Is the clinic registered with the Care Quality Commission (CQC) in England, or the equivalent regulator in Scotland, Wales, or Northern Ireland?
- Clinician credentials: Are the assessing clinicians named, qualified, and verifiable through the GMC or HCPC register?
- Assessment structure: Does the process include a full clinical interview, not just a questionnaire?
- Shared care agreements: If medication is likely, will your GP agree to a shared care arrangement for ongoing prescribing?
- Waiting times and costs: Are these clearly stated upfront, with no hidden fees?
A reputable provider should be transparent about all of the above before you pay a deposit.
What does the assessment involve?
A thorough private ADHD assessment usually includes several components:
- A detailed clinical interview covering current symptoms, their impact on work, relationships, and daily functioning.
- A developmental history review, exploring symptoms from childhood, since ADHD is a neurodevelopmental condition present from an early age.
- Standardised rating scales, such as the Conners’ Adult ADHD Rating Scales (CAARS) or the Diagnostic Interview for ADHD in Adults (DIVA-5).
- Collateral information, sometimes gathered from a parent, partner, or school reports, to corroborate the person’s account.
- A differential diagnosis check, ruling out other conditions, such as anxiety, depression, or autism, that can present with overlapping symptoms.
Expect the core assessment appointment to last between 60 and 120 minutes, though this varies by provider.
How much can a private ADHD assessment cost?
Costs vary considerably depending on the provider, location, and whether the assessment is for a child or an adult. Prices commonly range from around £300 to over £1,500 for the full diagnostic process. Some providers charge separately for:
- The initial assessment
- A follow-up diagnostic report
- Ongoing medication titration and monitoring, if prescribed
Ask for a full breakdown of costs in writing before booking, so there are no surprises later in the process.
How do online ADHD assessments work?
Online assessments have grown significantly in popularity, offering video consultations instead of in-person appointments. The clinical process should mirror an in-person assessment: a structured interview, standardised tools, and a qualified clinician making the diagnosis.
The main differences are convenience and, in some cases, cost. Online providers can often offer shorter waiting times because they’re not limited by local clinic capacity. However, the same regulatory checks apply. An online provider should still be CQC-registered (or the relevant devolved nation’s equivalent) and employ clinicians registered with the GMC or HCPC.
What should you check about an online provider specifically?
Online-only services deserve a bit of extra scrutiny because it can be harder to verify what’s happening behind the screen. Worth checking:
- Is the platform CQC-registered, and can you find this registration independently (not just taking their word for it)?
- Will the diagnosing clinician be a named, verifiable individual, rather than an anonymous panel?
- Does the service offer a shared care agreement with your GP for prescribing, where medication is recommended?
- Are reviews and testimonials verifiable, rather than only hosted on the provider’s own website?
- Is there a clear complaints procedure if something goes wrong?
If a provider is cagey about any of these points, treat that as a reason to look elsewhere.
Finding ADHD providers you can trust
Once you understand what to look for, the search becomes less daunting. Useful starting points include:
- The CQC website, where you can search for registered healthcare providers and read their latest inspection reports.
- AADD-UK and ADHD UK, charities that maintain information and, in some cases, directories related to ADHD diagnosis and support in the UK.
- Your GP, who may be able to recommend a reputable local or online provider, even if they can’t refer you through the NHS pathway.
- NICE guidance (NG87), which outlines the recognised standards for ADHD diagnosis that any reputable provider should be following.
Take your time comparing a few providers rather than booking with the first one you find. A short delay to check credentials is far better than receiving a rushed or unreliable diagnosis.
Making your next move with confidence
Finding a private ADHD assessment doesn’t have to be a leap of faith. By checking a provider’s regulatory status, confirming the clinician’s qualifications, and understanding what a thorough assessment should involve, you can approach the process with far more confidence.
If you’re ready to take the next step, start by shortlisting two or three CQC-registered providers, request their pricing and process in writing, and verify their clinicians through the GMC or HCPC register before booking.
Frequently asked questions
How long does a private ADHD assessment take from booking to diagnosis?
This varies by provider, but many private clinics offer appointments within a few weeks, with a diagnostic report typically following within a few weeks after the assessment itself.
Is a private ADHD diagnosis recognised by the NHS?
Yes, a diagnosis from a qualified, registered clinician is clinically valid regardless of whether it was made privately or on the NHS. However, ongoing prescribing may require a shared care agreement with your GP.
What are the risks of choosing a cheaper, unregulated provider?
Unregulated or poorly regulated providers may cut corners on assessment thoroughness, leading to misdiagnosis. They may also lack proper arrangements for ongoing medication management with your GP.
Are there alternatives to a private assessment if cost is a barrier?
Yes. You can remain on the NHS waiting list while exploring private options, and some NHS trusts offer a “Right to Choose” pathway, allowing you to select a qualified independent provider at NHS expense in certain circumstances.
Who is a private ADHD assessment best suited for?
Choose a private assessment if NHS waiting times are a significant barrier to your wellbeing or functioning, and you’re able to afford the associated costs. If cost is prohibitive, investigate the Right to Choose pathway or continue waiting on the NHS list while seeking interim support.