Most people who decide against a private assessment have not decided it is not worth it. They looked at a single four-figure payment, did the sum, and closed the tab.
A few hundred pounds in March is a different problem from the same money spread across six months. There are four ways people pay for an ADHD assessment in the UK, and two of them are routinely overlooked.
Can You Pay in Instalments?
Usually, yes. An adult assessment with us is £650, and instalment finance is the route most people end up using. Spread across a term, the monthly figure is the fee plus any interest, divided by the number of months.
An instalment plan does not make an assessment cheaper. It makes it payable. Missed payments can be charged for and reported to credit reference agencies, so commit only to a figure you could still manage in a bad month.
Soft Search or Hard Search
A soft search is a credit check only you can see. It does not affect your score. A hard search is recorded on your file, other lenders can see it, and several close together can make a mortgage application harder.
Which one applies depends on the product, not the brand - the same company can offer both. Ask it in these words before you apply: is the credit check for this plan a soft search or a hard search? Any regulated lender has to be able to tell you.
What Changed in July 2026
This is the most important development in paying for private healthcare this year, and almost no clinic website mentions it. The Financial Conduct Authority states: "We started regulating Deferred Payment Credit, often known as Buy Now Pay Later, on 15 July 2026."
Three things follow. Lenders now have to check you can afford the repayments. You can complain to the Financial Ombudsman Service. And Section 75 of the Consumer Credit Act applies, which means that if the service is not delivered, the lender shares liability with the clinic.
Will Insurance Cover It?
Usually not. Check rather than assume, but expect a no, because three features of UK private medical insurance work against ADHD at once.
- Chronic conditions are generally excluded, and ADHD is lifelong by definition
- Developmental and behavioural conditions are commonly excluded by name on personal policies
- Pre-existing conditions are excluded, and ADHD is present from childhood whether or not anyone named it
Where it can work is corporate cover. Some employer schemes buy neurodiversity assessment as a bolt-on that retail policies do not have. If your policy comes through work, ask HR. Ring the insurer, quote your policy number, and get the answer in writing before you book anything.
Can Your Employer Pay?
Yes, if they choose to, and this is the most under-used route on the list. No law obliges them, but many employers fund assessments through occupational health or a wellbeing budget.
Ask for the adjustments separately and now. ACAS is clear that "a worker does not need a diagnosis to be considered disabled under the Equality Act 2010", so an employer who says get diagnosed first has it backwards.
Access to Work Does Not Fund Diagnosis
If you take one thing from this page, take that. The GOV.UK guidance covers equipment, assistive software, support workers, travel and workplace changes. Diagnostic assessment appears nowhere on the list.
What it is genuinely good for is everything afterwards, and you do not need a diagnosis to apply. So apply now, in parallel, and treat paying for the assessment as a separate problem.
The Order to Try Them In
Ask your employer first, because a yes costs you nothing. Ring your insurer second, because it takes ten minutes. Apply to Access to Work third, for support rather than diagnosis. Use instalment finance last, for whatever is left.
One check before you sign anything. If Right to Choose is open where you live and you can wait, an NHS-funded assessment costs nothing at all.
Frequently Asked Questions
Will a payment plan affect my credit score?
It depends on the plan rather than the brand. Short interest-free agreements have generally used a soft search; longer interest-bearing credit usually involves a hard one. Ask before you apply.
Does Bupa, AXA or Aviva cover an ADHD assessment?
Standard personal policies commonly exclude it on three grounds at once. Some corporate schemes add neurodiversity cover that retail policies lack. Ring your own insurer and get it in writing.
Conclusion
None of this is financial advice, and we are not the people to give you any. What we can tell you is what each route does, which is enough to work out in an afternoon which one applies to you.
Work down the list in order of what it costs you. If you would rather talk it through first, our team will go through the options with you before you commit to anything.
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