With NHS waiting lists stretching years in most areas, private ADHD assessment has become the fastest route to diagnosis for many UK adults. But before you book, you need to understand not just the upfront cost, but the ongoing expenses that can follow. Here's a clear breakdown of what you're paying for and what to look out for.
What a Private ADHD Assessment Costs
Assessment prices across the UK typically range from £500 to £950. At the higher end, Psychiatry-UK charges £950 for a private adult ADHD assessment, which includes a one-hour assessment, formal diagnosis (if indicated), a full written report, and a personalised treatment plan. Clinical Partners charges £895 for a comparable service.
Smaller clinics and independent psychiatrists may charge less, sometimes in the £500 to £700 range, though availability varies by location. Online-only assessments tend to be at the lower end, while face-to-face appointments in London or the South East are often more expensive.
What's Included in the Assessment Fee
A standard private ADHD assessment typically includes: pre-assessment screening questionnaires, a clinical interview (usually 60 to 90 minutes) covering your current symptoms, developmental history, and functional impact, a written diagnostic report, and initial treatment recommendations. Some providers also include a follow-up appointment to discuss results.
The quality of the written report matters. This document is what you'll show your GP, your employer, and Access to Work. A thorough report should cover the clinical reasoning behind the diagnosis, detail how your symptoms affect your daily functioning, and include clear recommendations for treatment and support.
The Hidden Costs After Assessment
The assessment fee is only the beginning. If you're diagnosed and want medication, there are additional costs to consider.
Medication titration (the process of finding the right medication and dose) is handled by a specialist, not your GP. If your GP enters a shared care agreement, they'll take over prescribing once you're stable, and you'll pay standard NHS prescription charges. If your GP declines shared care, you'll need to continue paying for private prescriptions and specialist reviews.
Private prescription costs vary but typically run between £80 and £200 per month depending on the medication. Annual reviews with a private psychiatrist cost around £150 to £250. Over a year, that could add up to £1,200 to £2,600 on top of your initial assessment fee.
Before booking a private assessment, check whether your GP practice will accept shared care with your chosen provider. This is the single most important factor in determining your long-term costs. See our article on the shared care problem for details.
What to Look for in a Private Provider
- 1
Check the clinician's qualifications. ADHD assessment should be carried out by a psychiatrist or a specialist nurse prescriber under psychiatric supervision. Psychologists can assess but cannot prescribe. Make sure the assessor is registered with the appropriate professional body (GMC for doctors, NMC for nurses).
- 2
Ask about the assessment process. A robust assessment should take at least an hour and include a structured clinical interview, validated rating scales, and consideration of differential diagnoses (other conditions that could explain your symptoms). Be wary of very short assessments or those that rely solely on questionnaires.
- 3
Confirm what's included in the fee. Does the price cover pre-assessment questionnaires, the assessment itself, a written report, and a follow-up appointment? Some providers charge separately for the report or for letters to your GP.
- 4
Ask about post-diagnosis care. Does the provider offer medication titration? Will they initiate shared care with your GP? What are the ongoing costs if your GP declines? These questions determine your total cost of diagnosis, not just the upfront fee.
- 5
Check reviews and regulatory status. Look at CQC ratings (for regulated services), patient reviews, and whether the provider is recognised by ADHD UK or other advocacy organisations. Our clinic directory includes this information for hundreds of UK providers.
Can You Get the Cost Back?
There's no NHS reimbursement for private assessment. However, if you're self-employed, the cost of assessment may be tax-deductible as a business expense if ADHD affects your work (consult your accountant). Some employers will cover assessment costs through occupational health. Private health insurance rarely covers ADHD assessment, but it's worth checking your policy.
Once diagnosed, you can apply for Access to Work funding, which can cover up to £66,000 per year in workplace support. For many people, the assessment cost pays for itself many times over through the support it unlocks.
Sources
Psychiatry-UK: Fees · Clinical Partners: Private ADHD assessments for adults · ADHD UK: Private diagnosis · NICE Guideline NG87: ADHD diagnosis and management
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