The NHS ADHD waiting list crisis is one of the most discussed issues in UK mental health. In 2025, adults in many parts of England face waits of 3–5 years from GP referral to assessment appointment — and in some areas, waits of 6–7 years have been reported. For children, average waits via CAMHS are 12–24 months, with some areas significantly worse. Understanding why these waits exist, how they vary across the UK, and what you can do to get seen faster is essential for anyone navigating this system.
Key Takeaways
- Average NHS ADHD waiting time in England is 3–5 years; some areas exceed 6–7 years
- CAMHS waits for children are typically 12–24 months, but the full assessment process takes longer
- Northern Ireland has the longest waits in the UK; Scotland is generally better than England
- NHS Right to Choose (England) and private assessment are the fastest routes to diagnosis
How Long Are NHS ADHD Waiting Lists in 2025?
The most recent available data from NHS England suggests that the average adult ADHD waiting time in England from GP referral to first specialist appointment is 3–5 years. This average conceals significant variation: some areas of England have waits of 18–24 months for adults, while the worst-affected areas — particularly in rural England and parts of the North West and Midlands — report waits exceeding 6 years.
For children, average CAMHS waiting times for an initial ADHD assessment appointment are 12–24 months in most areas of England. However, the full assessment process (from first CAMHS contact to a completed diagnosis) often takes longer — sometimes 18–36 months from initial referral.
Why Are NHS ADHD Waits So Long?
The NHS ADHD waiting list crisis has multiple overlapping causes. The most fundamental is a dramatic increase in ADHD referrals over the past decade — and particularly since the COVID-19 pandemic. Referral rates for adult ADHD have more than doubled in England since 2019. Increased public awareness, high-profile media coverage of ADHD (particularly social media content on TikTok and Instagram normalising ADHD experiences), and the mental health impact of lockdowns have all contributed to a surge in people seeking assessments.
This surge in demand has not been matched by a corresponding increase in NHS capacity. The number of consultant psychiatrists in England has grown only marginally over this period, and ADHD-specific services remain rare. Many NHS trusts have no dedicated ADHD pathway at all: referrals go into general adult psychiatry queues, where they compete with more acute presentations.
Regional Differences in NHS ADHD Wait Times
Waiting times for NHS ADHD assessment vary enormously by geography in the UK. In England, London-based NHS trusts generally have some of the shorter (though still very long) adult ADHD waits, partly because there are more private ADHD providers in London that hold NHS Right to Choose contracts.
Scotland has historically had shorter ADHD waiting times than England. Scottish NHS boards are required to meet an 18-week referral-to-treatment standard for most outpatient conditions. Wales has some of the longest ADHD waiting times in the UK, with reports of waits exceeding 5 years for adult assessments in some health board areas. Northern Ireland has the longest ADHD waiting times in the UK by most measures, with waits of 6–7 years not uncommon.
How to Get Seen Faster — Your Options
NHS Right to Choose is the most powerful tool available to patients in England who want a faster free assessment. Rather than waiting for NHS ADHD services in your area, you ask your GP to refer you under Right to Choose to a private clinic that holds an NHS contract. The wait at these clinics is typically 3–12 months — vastly shorter than 3–7 years.
The second option is private assessment. While this involves upfront cost (£595–£1,800), it offers the fastest access — typically 2–8 weeks from enquiry to assessment appointment. For people whose ADHD is significantly impairing their daily life right now, the speed of private assessment may justify the cost.
A third strategy is to maximise the quality of your GP referral. A detailed, well-evidenced referral from your GP, supported by a completed ADHD self-report scale (such as the ASRS) and specific examples of impairment across multiple life domains, is more likely to be seen as high-priority by the receiving service.
Frequently Asked Questions
How do I find out the NHS ADHD waiting time in my area?
Contact your local NHS trust or ICB patient services team and ask directly. ADHD UK also publishes FOI-gathered waiting time data for many areas. When asking, be specific: request the wait from GP referral to completed ADHD assessment, not just the first contact.
Can I speed up my NHS ADHD referral if my symptoms are severe?
NHS ADHD services may prioritise more acute presentations, but ADHD is not typically triaged as urgent in the same way as psychosis or severe depression. The most effective route to faster assessment is NHS Right to Choose (England), which bypasses local waiting lists entirely.
Is it worth going on the NHS waiting list even if I go private first?
Yes — you can be on the NHS waiting list while pursuing a private assessment. If you are diagnosed privately, you can still use the NHS for medication via shared care, which is significantly cheaper.