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NHS vs private ADHD assessment
The main difference between an NHS and a private ADHD assessment is cost and waiting time. The NHS route, including NHS Right to Choose in England, is free but waits can be long. A private assessment has an upfront fee but can often be arranged sooner. The clinical standard a good assessment should meet is the same either way. This is information, not medical advice, and only a clinician can diagnose ADHD.
Information only. Costs, waits and shared-care policies change and vary by area. Confirm the current position with each provider and your GP.
NHS vs private at a glance
| Factor | NHS (standard or Right to Choose) | Private |
|---|---|---|
| Cost to you | Free at the point of use | Upfront fee, paid by you (see our cost guide) |
| Typical wait | Can be long; Right to Choose may be shorter, varies by area | Often shorter, varies by provider |
| Referral | Via GP; Right to Choose lets you pick an approved provider | Often self-referral, book directly |
| Who assesses you | Qualified NHS or NHS-contracted clinician | Qualified clinician; check credentials before booking |
| Medication afterwards | Usually prescribed and managed within the NHS | May need a shared-care agreement with your GP, not guaranteed |
| Where it applies | UK-wide NHS; Right to Choose is England only | UK-wide |
This table is a general guide, not a quote. Always confirm current cost, waiting times and shared-care arrangements with the specific provider and your GP.
Which route suits which situation
If you cannot pay for a private assessment, the NHS and Right to Choose routes are the way in, and Right to Choose may shorten the wait. If a long wait would be hard to manage and you can afford it, a private assessment can be faster. Whatever you choose, plan ahead for what happens after a diagnosis, especially around medication and shared care with your GP.
For the detail, see Right to Choose explained, private assessment costs, and waiting times.
Frequently asked questions
Is a private ADHD diagnosis accepted by the NHS?
A diagnosis from a qualified UK clinician is a clinical assessment. Whether the NHS continues care, such as prescribing, often depends on a shared-care agreement between the private provider and your GP, which your GP is not obliged to enter. Ask both sides how this would work before you commit.
Which route is cheaper?
The NHS route and NHS Right to Choose are free at the point of use. A private assessment has an upfront cost. If budget is the main factor, the NHS routes are cheaper.
Which route is faster?
It varies by area and provider. Standard NHS waits can be long. Right to Choose or a private assessment can sometimes be quicker, but this is not guaranteed. Check current waiting lists before deciding.
Can I switch from private back to the NHS later?
Many people are assessed privately and then ask their GP about NHS shared care for ongoing medication. This depends on local policy and is not automatic. Discuss it with your GP early so you know what to expect.
Editor, ADHD Helper
Oliver leads ADHD Helper's editorial coverage of adult ADHD. He researches and writes the plain-English explainers on getting an ADHD assessment through NHS Right to Choose or privately, and on the products and tools people use to manage ADHD, drawing on guidance from the NHS, NICE and the Royal College of Psychiatrists. He is clear that the site is information, not medical advice, and that diagnosis is for a registered clinician.
Last reviewed: 8 June 2026