Cost guide
Real prices from 269+ clinics we independently verify against their own sites — plus the multi-stage pricing trick worth knowing about before you book on price alone.
What things really cost
Of the 269+ clinics we list, 153 publish a fixed starting price. The lowest published figure among them is under £200 — but treat that number carefully. In every case we've checked personally, a headline price that low turns out to be for an initial screening or triage stage only, with the full diagnostic assessment costing several hundred pounds more as a separate payment later in the pathway.
A more realistic floor for a genuine, complete adult ADHD assessment — clinical interview, questionnaires, and a written report — is around £400–£500. The bulk of clinics we track sit between roughly £700 and £1,200, with psychiatrist-led services (who can prescribe directly if medication is recommended) typically at the upper end.
Before booking on price: ask the clinic directly what the quoted fee covers. "Assessment" sometimes means just a first screening call, with the actual diagnostic assessment, feedback session, and report priced separately. A clinic that's upfront about this on its own site is a good sign either way.
If cost is the main barrier, it's worth checking NHS Right to Choose before paying privately. It lets you ask your GP to refer you to an alternative NHS-commissioned assessment provider — at no cost to you — instead of joining your local waiting list. Availability depends on your NHS Integrated Care Board, so confirm current capacity with your GP. See our Right to Choose guide for the full process and a copy-paste GP letter template.
Questions
Among the clinics we independently verify, the lowest published starting price is under £200 — but that figure is usually for an initial screening or triage stage, not a complete diagnostic assessment. The realistic entry point for a genuine full assessment is closer to £400–£500, with most clinics charging between £750 and £1,200.
Not necessarily — price mostly reflects delivery mode and clinician type rather than quality. An online, nurse- or psychologist-led assessment is typically cheaper than an in-person, consultant psychiatrist-led one, but both can be entirely legitimate. The clinician type matters for what happens next (a psychiatrist can prescribe directly; others usually refer you on), not for whether the diagnosis itself is trustworthy.
Multi-stage pricing. Some clinics advertise a low price for an initial screener or triage call, with the full diagnostic assessment costing significantly more as a separate, later payment. Always ask directly what a quoted fee covers — the clinical interview, questionnaires, and written report — before assuming it's the total cost.
Yes, via the NHS — either the standard waiting-list route, or NHS Right to Choose, which lets you ask your GP to refer you to an alternative NHS-commissioned provider at no cost. Availability depends on your NHS Integrated Care Board. See our Right to Choose guide for the full process and a copy-paste GP letter.
Not reliably — wait time and price don't move together in a consistent pattern across the clinics we track. Some of the fastest-moving clinics are mid-priced, and some budget options have longer waits. Check each clinic's current wait time individually rather than assuming from price.
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