The headline numbers
If you are waiting for an NHS ADHD assessment, you are in a very long queue. NHS England began publishing ADHD waiting list data in 2025, and the picture it shows is stark. The figures below come from NHS England's ADHD management information published in February 2026, covering data to December 2025.
| Measure | Latest figure | Source |
|---|---|---|
| People in England estimated to have ADHD | Around 2.5 million | NHS England, Feb 2026 |
| Open referrals that may be for an ADHD assessment | Up to 735,157 | NHS England, Dec 2025 data |
| Adults waiting more than a year | 61.6% | NHS England, Feb 2026 |
| Adults waiting less than 13 weeks | Roughly 1 in 10 | NHS England, Feb 2026 |
Those are national figures. Locally, the spread is enormous. Some areas assess adults within a year. In the worst-affected areas, the standard local pathway is quoting waits of five years or more, and a small number of services have closed their adult waiting lists to new referrals entirely.
The short answer: most adults referred on the standard NHS pathway in England currently wait more than a year for an ADHD assessment, and in many areas considerably longer. If you live in England, the Right to Choose pathway is usually the fastest NHS-funded alternative.
Why the waits are so long
Referrals for ADHD assessment have risen sharply since 2020, driven by better public awareness, reduced stigma, and a generation of adults, particularly women, recognising symptoms that were missed in childhood. Assessment capacity has not kept pace. ADHD assessments need specialist clinicians, and there are not enough of them.
There is also a structural problem. ADHD sits awkwardly between mental health services, community services, and paediatrics, and different areas commission it differently. NHS England's independent ADHD Taskforce reported in 2025 that the system needs fundamental redesign, not just more of the same. That work is under way, but it will take years to change what you experience at the front of the queue.
In the meantime, funding pressure is making some things worse before they get better. For the financial year running April 2026 to March 2027, a number of Integrated Care Boards (ICBs, the regional NHS bodies that fund care) have set reduced activity levels with assessment providers, which limits how many appointments those providers can offer NHS patients in that area.
How long will you actually wait?
It depends on three things: where you live, whether the referral is for an adult or a child, and which pathway your referral goes down. The national statistics hide a huge range, so the only meaningful answer is local.
The charity ADHD UK maintains the best public dataset on this. It contacts providers monthly and publishes current wait times by provider, along with a postcode lookup for local NHS waits. For the standard local pathway, you can also simply ask: your GP surgery can tell you which service they refer to, and that service must tell you its current expected wait if you ask.
One number that surprises almost everyone: the assessment is not the end of the waiting. If you are diagnosed and choose medication, there is usually a second queue for titration, the supervised period where your prescriber finds the right medication and dose. With some providers the titration wait is currently as long as the assessment wait. We have broken down the current provider-by-provider figures in our Right to Choose wait times comparison.
Routes that can shorten the wait
Right to Choose
Under the NHS Constitution, patients in England can choose which provider carries out their first outpatient appointment. In practice this means asking your GP to refer you to a specialist ADHD provider holding an NHS contract, such as Psychiatry-UK or ADHD 360, instead of your local service. The assessment and titration remain NHS-funded. Waits are typically months rather than years, though they vary by provider and region. Our Right to Choose guide covers the process step by step.
Private assessment
Private ADHD assessments are fast, often within weeks, but you pay for the assessment, for follow-up appointments, and for private prescriptions during titration. There is also no guarantee your GP will take over prescribing afterwards, so check the full cost of the route before committing, not just the assessment fee.
Remain on the local pathway
If your local wait is reasonable, or you have already been waiting a long time and are near the front, staying put can be the right call. Joining a Right to Choose list restarts your wait with that provider, so compare your remaining local wait against the provider's full current wait before switching.
Already on a waiting list? You can still use Right to Choose at any point before your first appointment. Being on a local list does not lock you in, but switching means starting the new provider's queue from the back, so do the arithmetic first.
Make the wait work for you
A long wait is infuriating, but it is also preparation time. Assessors consistently say the most useful patients to assess are the ones who arrive with concrete, dated examples rather than general impressions. Three things are worth doing now.
First, document. Write down specific examples of how your symptoms affect work, study, home, and relationships, and keep adding to the list as things happen. Dig out childhood evidence if you can: school reports with comments about concentration, daydreaming, or unfulfilled potential are gold.
Second, screen. The Adult ADHD Self-Report Scale (ASRS) is a recognised screening questionnaire you can complete free online. It is not a diagnosis, but bringing a completed ASRS to your GP appointment makes the referral conversation easier. Our guide on what to say to your GP includes word-for-word scripts.
Third, baseline. Tracking your focus, sleep, and energy while unmedicated gives you a documented "before" picture. ADHDose is built for exactly this: it logs your daily patterns now, and if you are later prescribed medication it models your medication levels through the day so you can compare against the baseline you built while waiting. Arriving at titration with months of baseline data makes every dose conversation more productive. There is more on this in what to do while waiting for medication.
Common questions about NHS ADHD waiting times
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