A short, scannable list of questions to ask any prospective ADHD assessor in the UK, plus the red flags to watch for.

Key takeaways

  • A good UK ADHD assessor will take a detailed developmental history, use validated tools, and be willing to explain their findings in plain English. Red flags include very short appointments and a guaranteed diagnosis after a paid screening tool.
  • You do not need a GP referral to see a private ADHD clinician in the UK, but your GP can still be helpful by sharing relevant history and agreeing to take over prescribing if needed.
  • A screening tool is a short questionnaire that suggests whether further assessment might be useful; it is not diagnostic. A full assessment is a longer, structured clinical interview that results in a clinical decision.
  • Most UK private ADHD assessments last between 60 and 120 minutes. Be wary of any service offering a comprehensive assessment in under 30 minutes; that is rarely enough for a thorough diagnostic interview.
  • Ask what happens after the assessment: who writes the report, how long it takes, whether the assessor can prescribe, and how medication titration is handled. For shared care with your GP, ask whether the assessor is willing to enter a shared-care agreement with NHS services.

Choosing where to have an ADHD assessment is a significant decision. The assessor you choose shapes the experience, the report you walk away with, and the support you can access afterwards. Knowing what to ask up front puts the choice in your hands, not the assessor's.

This Quick Guide gives you the questions that matter most, organised into five short sections. Take it with you to any assessment enquiry call or email.

1. Questions about the assessor

  • Are the clinicians GMC or NMC registered? UK ADHD assessments should be carried out by clinicians registered with the General Medical Council (GMC) or the Nursing and Midwifery Council (NMC). You can verify registration directly on the GMC or NMC registers.
  • What is their specific ADHD training? Look for clinicians with formal postgraduate training in ADHD, not only general psychiatry or psychology experience.
  • How many adult ADHD assessments do they complete each month? Volume matters for quality. A clinician doing this work regularly is more likely to recognise subtle presentations than one who assesses occasionally.
  • Will the clinician who assesses you also write the report? Some services separate the two.
  • Are they on the specialist register relevant to your case? For adults with complex mental health history, a consultant psychiatrist with appropriate specialist registration is often the right level.

2. Questions about the process

  • How long does the assessment take? A thorough adult ADHD assessment usually takes 90 minutes to 3 hours, often split across two sessions. Anything significantly shorter is a red flag.
  • What tools do you use? Validated tools include the DIVA (Diagnostic Interview for ADHD in Adults), ASRS, and QBTest. The assessor should be able to name what they use and why.
  • Will you review my developmental history? ADHD is developmental, so a quality assessment must cover childhood. Expect questions about early years, school reports, and family patterns.
  • Will I need to provide collateral information? Some services ask a family member or close friend to complete a brief questionnaire. This strengthens the assessment.
  • What is the wait between assessment and report? Typical timelines are 2 to 4 weeks.
  • How much does it cost, and what is included? Look for a clear breakdown: assessment, report, post-diagnostic follow-up, and any prescription review if medication is being considered.

3. Questions about support afterwards

  • Is post-diagnostic support included? A diagnosis without follow-up is a half-finished journey. Ask what the service offers in the 3 to 6 months after diagnosis.
  • If medication is recommended, who prescribes it and how is titration managed? Shared care with your NHS GP is often possible once the titration is stable. Ask whether the service supports this.
  • Do you provide a report my NHS GP can use? A well-written report makes shared care much easier.
  • What happens if my case is complex? If you have co-occurring anxiety, depression, autism, or trauma, ask how the service handles that. A good service will tell you what they can and cannot do.
  • Do you offer reasonable adjustments? Neurodivergent-friendly processes matter. Examples include written rather than verbal feedback, flexibility on session length, and sensory-aware settings (online often helps).

4. Your rights

  • You have the right to ask for a copy of your report.
  • You have the right to ask who has access to your data. Under UK GDPR, the service must explain this clearly.
  • You have the right to a second opinion. Most services will support this without resistance.
  • You have the right to complain if the service falls short. Check that the service has a complaints process and that they are ICO registered.
  • You have the right to choose. If a service does not feel right, another will.

5. Red flags to watch for

A diagnosis is a significant life event, and not every service delivers it well. A few warning signs:

  • No mention of GMC or NMC registration.
  • A 30-minute assessment slot.
  • A flat fee with no breakdown of what is included.
  • A report delivered within 24 hours.
  • Pressure to commit to titration before the assessment is complete.
  • No follow-up support.
  • An assessor who refuses to answer questions about their training or approach.

If you see any of these, ask more questions. A trustworthy service will welcome them.

Sources and references

  1. National Institute for Health and Care Excellence (2018, updated 2019). NG87: Attention deficit hyperactivity disorder: diagnosis and management.
  2. NHS.uk (2024). ADHD overview and treatment.
  3. UK Government (2010). Equality Act 2010.

Disclaimer

This article is company-authored informational content produced by NeuroCheck Pro to help readers understand the topic in general terms. It is not a medical diagnosis and is not a substitute for assessment by a qualified clinician. If you are concerned about your own or someone else's health, please speak to your GP or contact NHS 111 for advice. If you or someone you know is struggling or in distress, the Samaritans are available free, any time, on 116 123.

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