Going private for ADHD in Scotland

What to look for, what a good assessment includes, and what happens after a private diagnosis

Reviewed by ADHD Scot,

Why people choose private assessment

NHS waiting times for ADHD assessment in Scotland vary significantly by health board. In some areas, adults wait several years. Many people choose to pay for a private assessment rather than wait, or because their GP has declined to refer them.

A private assessment does not mean a lower quality assessment, but quality does vary considerably. Knowing what to look for before you book matters.

Regulation in Scotland

Scotland's independent healthcare regulator is Healthcare Improvement Scotland (HIS). Whether a provider is required to register with HIS depends on the type of service and the clinician involved.

Services provided by or including a medical practitioner, registered nurse (including nurse prescribers), pharmacist, or midwife are required to register with HIS. HIS has confirmed that clinical psychology-led services, where no medical doctor, nurse, or other specified professional is involved, are not legally required to register. England-based providers offering online services to patients in Scotland and regulated by the Care Quality Commission (CQC) are also not required to additionally register with HIS. Our regulation page explains the different categories in full.

Where HIS registration does apply, it means the provider has been inspected against clinical standards and that complaints can be escalated to an independent regulator. Our Compare providers tool shows current HIS registration status for each provider. Our Regulation page explains the different types of provider and what each means for oversight.

Look for neurodevelopmental experience

When comparing providers, check the assessing clinician's specific area of focus. ADHD and autism assessment sits within a much wider field. Different clinicians will have spent their careers working across very different areas of psychiatry or psychology, and the level of experience in neurodevelopmental conditions specifically will vary.

Reviewing a clinician's background, published work, or stated areas of practice before booking is a reasonable step. You are looking for someone who assesses ADHD and autism regularly, not someone for whom it is an occasional part of a broader caseload.

Understanding how clinics are structured

Private ADHD services vary in how they are set up. Before you commit, understand who is involved in your care at each stage.

Psychiatrist throughout: Some services use a consultant or specialist psychiatrist for the diagnostic assessment and for all subsequent prescribing and reviews. The same clinician oversees your care from assessment onwards.

Psychiatrist for assessment, nurse prescriber for ongoing care: Some clinics use a consultant or specialist psychiatrist for the diagnostic assessment, then transfer prescribing and medication reviews to a nurse prescriber. Both roles involve distinct professional training; specialist nurses working in ADHD often have significant experience in titration and ongoing management.

Psychologist-led assessment with nurse prescriber: Some services use a clinical psychologist to lead the diagnostic process, with a nurse prescriber responsible for any subsequent prescribing. This separates the diagnostic and prescribing functions across two clinicians.

Nurse-led assessment and ongoing care

Some services are led throughout by registered mental health nurses with specific training in neurodevelopmental conditions. A registered mental health nurse can carry out a diagnostic assessment, but whether they can also prescribe depends on whether they hold an independent prescriber qualification. Not all do. If medication is something you are considering, check specifically whether the nurse holds an independent prescriber qualification, or whether prescribing would need to come from elsewhere.

Psychologist-led assessment, no prescribing

Some services use a clinical psychologist to lead the diagnostic process and do not include any prescribing route. If medication is something you are considering, ask upfront how this is handled before you book.

Multi-disciplinary team

Some clinics bring together psychiatrists, psychologists, specialist nurses, occupational therapists, and speech and language therapists. This is particularly common in autism assessment. MDT services tend to be more comprehensive but also more expensive.

There is no single model that is objectively best. Each has different strengths. What matters is understanding the structure of the service you are choosing. Before committing, ask: who carries out the assessment, who will handle prescribing and ongoing reviews, and will you see the same person at each appointment?

Who can and cannot prescribe medication for ADHD

This is one of the most practically important things to understand before choosing a provider.

Consultant psychiatrists can diagnose and prescribe.

Clinical psychologists can diagnose but cannot prescribe. A psychologist-led service is assessment and diagnosis only unless it has a separate prescriber involved.

Registered mental health nurses can carry out assessments but cannot prescribe unless they also hold an independent prescriber qualification. Not all do. Always check.

Nurse prescribers holding an independent prescriber qualification can both assess and prescribe, or can handle prescribing after a diagnosis made by a psychologist or psychiatrist.

If medication may be part of your care, confirm before booking that a prescriber is part of the service you will receive, and is registered with the relevant regulatory body.

Checking clinician registration

Doctors (consultant psychiatrists, associate specialists, specialist doctors and other medical doctors): www.gmc-uk.org

Clinical psychologists: www.hcpc-uk.org

Registered mental health nurses and nurse prescribers: www.nmc.org.uk

Checking takes about two minutes and confirms a clinician is qualified, currently registered, and has no restrictions on their practice.

Private autism assessment

Many people considering ADHD assessment are also exploring the possibility of autism, and vice versa. The two conditions frequently co-occur: studies commonly find that around half of autistic people also have ADHD (expert consensus, Young et al., 2020).

Private autism assessment follows a different structure from ADHD assessment. There is no medication pathway or shared care arrangement after an autism diagnosis, so the costs are largely front-loaded rather than ongoing. The diagnostic tools are different too, the ADOS-2 (Autism Diagnostic Observation Schedule) is the recognised gold standard, administered by a trained clinician rather than self-completed.

If you are considering both ADHD and autism assessment, a combined assessment from a provider experienced in both can be more efficient and avoids repeating your full history twice. Our compare tool lets you filter for providers offering combined ADHD and autism assessment.

Our dedicated private autism assessment page covers what a thorough autism assessment should include, the tools used, who can diagnose, costs, and what to ask before you book.

What a good assessment includes

These aren't arbitrary standards. They reflect what NAIT (2025), NHS Scotland Right Decisions guidance, the Royal College of Psychiatrists CR235 (2023), and NICE NG87 all specify as necessary for a clinically valid adult ADHD diagnosis.

A comprehensive clinical interview covering your developmental history from childhood, your current symptoms, how they affect your daily life, and your personal, educational, and occupational history. This is the backbone of the assessment. Rating scales support it, they do not replace it.

Symptoms present across more than one setting. The diagnostic criteria (DSM-5) require symptoms to be present in at least two important areas of life, for example, at home and at work, or in relationships and in professional contexts, and NICE NG87 reflects this. Symptoms present in only one context do not meet the diagnostic standard.

Functional impairment, not just symptoms. It is not enough to have symptoms. Those symptoms must cause at least moderate impairment in your social, occupational, educational, or daily functioning. An assessment that identifies symptoms but does not establish their real-world impact is incomplete.

Collateral history, information from someone who knew you as a child (a parent, sibling, or school records) and ideally someone who knows you now. ADHD must have been present since childhood, so developmental history matters, and corroborating information from someone else strengthens the diagnostic picture considerably. If you genuinely cannot provide this, that should be documented and explained, not simply skipped.

Contextual information, how your symptoms affect you across different environments: home, work, relationships, daily tasks. A good clinician wants to understand real-world impact, not just how you present in a clinical setting.

Screening for co-occurring conditions: depression, anxiety, autism, sleep disorders, and substance misuse can all overlap with or mask ADHD. RCPsych CR235 and NAIT guidance both specify that a thorough assessment considers these alternative and co-occurring explanations. A clinician who only looks for ADHD risks missing something important, and a report that doesn't address differential diagnosis is one of the main things that makes GPs cautious about shared care requests.

Application of DSM-5 or ICD-11 diagnostic criteria, the diagnosis should be made with explicit reference to recognised diagnostic criteria, not clinical impression alone.

Validated diagnostic tools as supporting evidence, standardised rating scales such as the Conners Adult ADHD Rating Scales or DIVA-5 (Diagnostic Interview for ADHD in Adults). These are important supporting evidence and should not be the primary or sole basis for a diagnosis. For a plain-English guide to what these tools are and what to expect on the day, see Assessment tools and what to expect.

A written report with clinical reasoning clearly set out, what was found, how the diagnostic criteria were met, what other explanations were considered, and what the outcome is. It should be clear enough that another professional reading it can follow the basis for the diagnosis.

On online assessments: being assessed online is not a problem. What matters is whether the assessment covers all of the above, not whether the appointment happens on a screen or in a room.

Diagnostic tools explained

Understanding which tools are used, and what they can and cannot tell you, helps you evaluate what you are being offered.

DIVA-5 (Diagnostic Interview for ADHD in Adults): A structured clinical interview covering all 18 DSM-5 ADHD criteria across two time points: childhood and adulthood. One of the most widely used validated instruments for adult ADHD assessment in the UK. Administered by a clinician, not self-completed.

CAARS (Conners Adult ADHD Rating Scales): A validated self-report and observer-report questionnaire measuring the frequency and severity of ADHD symptoms across multiple domains. Used as supporting evidence alongside a clinical interview, not as a standalone diagnostic tool.

QbTest: A computerised test that measures attention, impulsivity, and activity level objectively using a camera and a handheld response device. NICE has reviewed QbTest as a useful aid to ADHD assessment. It does not diagnose ADHD on its own, it provides objective data that a clinician weighs alongside clinical history and rating scales. A positive result is not a diagnosis; a negative result does not rule ADHD out.

CAT-Q (Camouflaging Autistic Traits Questionnaire): A validated measure of how much someone masks or compensates for autistic traits in social situations. Relevant where a combined ADHD and autism assessment is being considered, and particularly useful for women, girls, and late-diagnosed adults. Masking can suppress observable traits in both ADHD and autism, making them harder to identify in a standard clinical interview.

The key principle: validated tools are supporting evidence, not the diagnosis itself. A thorough assessment uses them alongside a comprehensive clinical interview, not instead of one.

What a good assessment report looks like

Written reports vary considerably in length and depth. Length alone is not a reliable indicator of quality. What matters is whether the report reflects a genuine clinical engagement with your history and presentation.

A good report describes your developmental and personal history in meaningful terms, explains how your symptoms manifest across different areas of your life, and uses validated rating scales as supporting evidence alongside clinical reasoning rather than as a substitute for it. Under AQAS (the Academy of Quality Assurance in Psychiatry and related specialties) standards, a good assessment report documents the clinician's reasoning clearly enough that another professional reading it can follow the basis for the diagnosis.

This matters beyond the assessment itself. When your GP reads the report to decide whether to enter a shared care agreement, the clarity and quality of what they receive will influence their response.

Questions to ask before you book

  • Is this provider registered with Healthcare Improvement Scotland?
  • Who carries out the assessment: a consultant psychiatrist, clinical psychologist, registered mental health nurse, or a combination? What are their specific qualifications, regulatory registration, and background in neurodevelopmental conditions?
  • If the assessment is psychologist-led: who handles prescribing? Is there an internal prescriber, an external referral, or does this rely on GP shared care?
  • If the assessment is nurse-led: does the nurse hold an independent prescriber qualification, or is the service assessment and diagnosis only?
  • Who will be responsible for my ongoing prescribing and medication reviews after diagnosis? Is it the same clinician who assessed me?
  • What validated tools are used, and is collateral history included?
  • What does the written report include? How long does it take to receive?
  • Do you support shared care with NHS GPs in Scotland? What does your shared care letter include?
  • If my GP declines shared care, can you continue to prescribe, and at what cost?

Understanding the full cost

Private ADHD care costs vary considerably and are not always obvious upfront. The assessment fee is usually the most prominently advertised figure, but the total cost of care includes much more:

  • Assessment fee: the initial consultation and written report
  • Titration appointments: finding the right medication and dose typically requires several follow-up appointments. Ask how many are included in the quoted price and what additional appointments cost
  • Ongoing review appointments: once medication is stable, regular reviews are needed (typically every 6–12 months). Clarify who conducts these, how often, and what they cost
  • Private prescription fees: if you are not on shared care with your GP, each prescription requires a private prescription charge. Costs vary by provider; some Scottish clinics charge from around £30, with others charging more (as of 2026, check current rates with your provider). Ask upfront what the prescription fee is and how often it applies
  • Medication costs: private prescriptions can be dispensed at any pharmacy, including standard high street pharmacies, not only private ones. Medication costs vary between pharmacies, so compare a few before settling on one

Some clinics suggest a specific pharmacy. You are not required to use it. A private prescription can be taken to any pharmacy you choose.

Always ask for a written breakdown of what each stage costs before you commit.

Signs of a poor-quality assessment

A reputable provider wants you to make the right choice, even if that means answering difficult questions before you commit. Be cautious of:

  • Assessment by questionnaire only: rating scales are supporting evidence, not a diagnosis on their own. A valid assessment requires a comprehensive clinical interview
  • No request for collateral history: a thorough assessor will ask about your childhood from someone who knew you. If this isn't part of the process, ask why
  • Very short assessment times: a thorough adult ADHD diagnostic interview typically involves at least 60–90 minutes of clinical contact. Ask what is included in the appointment time you are being offered
  • No named clinician: you should be able to find out who will be assessing you, check their qualifications, and verify their registration before you commit
  • Vague answers about shared care: if shared care matters to you, ask specifically what their shared care letter includes and whether they have experience working with Scottish GPs. Non-specific answers are a warning sign
  • No differential diagnosis in the report: a report that doesn't consider other possible explanations for your symptoms may be rejected by Scottish GPs for shared care purposes
  • Pressure to book quickly: a reputable provider won't rush you. Take the time to ask questions before committing
  • No upfront information about ongoing costs: ask what medication reviews cost, how often they are needed, and what prescription fees apply if shared care with your GP is not available
  • No HIS registration where expected: if the service involves a medical practitioner, expect HIS registration or a clear explanation of why it does not apply

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After a private diagnosis

Receiving a private diagnosis is a starting point, not an endpoint. What comes next (titration, ongoing prescribing, medication reviews, and potentially shared care) involves decisions and relationships that are worth understanding before you begin.

If your child has been privately diagnosed: Schools sometimes resist accepting a private diagnosis as the basis for adjustments or additional support. The Children and Young People's Commissioner Scotland (August 2025) is explicit on this point: any decision about whether to accept a diagnosis made by an appropriate medical professional should be made on an individual, evidence-based basis, it is not appropriate for a school to have a blanket policy of refusing private diagnoses, particularly given the current lack of timely access to NHS assessment. If you encounter this, you can reference this submission directly. Your child's rights under the United Nations Convention on the Rights of the Child (UNCRC) do not change based on whether their diagnosis was made privately or by the NHS.

Private autism assessmentShared care explainedAfter diagnosisCompare private providers

References

ADHD Scot is an independent, non-clinical information project. Nothing here is medical advice. Always consult a qualified clinician before making decisions about assessment or treatment.

Reviewed by ADHD Scot,