Cost is usually one of the first practical questions once someone has decided to look into an adult ADHD assessment privately, and the answer varies more than people expect — not because of inconsistency, but because “an ADHD assessment” isn’t always the same product from one provider to the next.
What drives the price
A handful of things separate a lower-cost assessment from a higher one: whether it’s led by a psychiatrist or a psychologist, whether it includes a full structured clinical interview like the DIVA-5 or relies mainly on questionnaires, whether a written report is included and how detailed it is, and whether ongoing prescribing support is part of the package or a separate cost entirely. It’s worth asking any provider exactly what’s included before comparing headline prices, since a cheaper up-front fee sometimes means paying separately for the report, the follow-up, or the prescribing pathway.
What it costs here
To be transparent about my own fees rather than leave you to guess:
- ADHD Assessment: £1,100
- ASD (autism) Assessment: £2,000
- Combined ASD and ADHD Assessment: £2,500
- Other comprehensive psychological assessment (cognitive, mental capacity): £180–£2,000 depending on scope
These include the structured clinical interview, standardised measures where relevant, and a full written report. The complete, current fee table — including therapy and consultation fees — is always kept up to date on the fees and appointments page, rather than repeated here where it could go stale.
The £0 option
It’s also worth knowing that paying isn’t the only route. Under NHS Right to Choose, many people can be referred to a provider of their choice through their GP at no direct cost, though it takes longer than paying privately and depends on your local NHS commissioning arrangements. Which route makes sense depends on how urgently you need answers and what you can realistically wait for or afford.
