NHS ADHD Waiting Times

Waiting times by region

NHS ADHD waiting times vary enormously depending on where you live. The table below shows estimated current waiting times for adult ADHD assessment across NHS regions in England. These figures are based on the latest available data from NHS trusts, Freedom of Information requests, and patient-reported experiences. Actual waits may be shorter or longer depending on your specific local service.

Figures are estimates based on publicly available NHS data, FOI responses, and patient reports (2025–2026). Actual waiting times may differ. Some trusts have stopped accepting new referrals entirely.

Why are waits so long?

The current crisis in NHS ADHD services is the result of several converging factors, none of which have simple solutions:

Surging demand

Referral rates for adult ADHD assessment have increased by over 400% in the past five years. This surge is driven by increased public awareness (partly through social media and media coverage), growing recognition that ADHD does not only affect children, and the 694% increase in female ADHD diagnoses. The COVID-19 pandemic also played a significant role — lockdowns and remote working disrupted the coping mechanisms many people had relied on for years, leading many to seek assessment for the first time.

Chronic underfunding

NHS ADHD services have been historically underfunded. Many NHS trusts do not have dedicated adult ADHD teams. Instead, ADHD assessments are handled by general adult mental health services that were already stretched thin. Some trusts have just one or two clinicians qualified to carry out ADHD assessments, serving populations of hundreds of thousands.

Workforce shortages

There is a national shortage of psychiatrists and specialist clinicians trained in adult ADHD assessment. Training pathways for ADHD specialists are limited, and many experienced clinicians have moved into private practice where demand is equally high. The NHS simply does not have enough qualified assessors to meet current demand.

Systemic barriers

The referral process itself creates bottlenecks. GPs act as gatekeepers, and many lack training in recognising ADHD in adults. Some GPs are reluctant to refer, leading to multiple appointments before a referral is made. Once referred, patients enter a queue with no transparency about their position or expected waiting time. Some trusts have closed their waiting lists entirely, meaning new referrals are simply turned away.

The cost of waiting

Waiting years for a diagnosis is not just inconvenient — it has real, measurable consequences for every aspect of a person's life. Research consistently shows that undiagnosed and untreated ADHD is associated with significantly worse outcomes across mental health, relationships, career, and overall quality of life.

Mental health

Adults waiting for an ADHD assessment report significantly higher levels of anxiety and depression than both the general population and people who have already been diagnosed. The uncertainty of not knowing whether you have ADHD, combined with the frustration of a multi-year wait, takes a genuine toll. Studies show that adults with undiagnosed ADHD are three to five times more likely to experience clinical depression and two to three times more likely to develop an anxiety disorder.

Relationships

Undiagnosed ADHD puts significant strain on romantic relationships, friendships, and family dynamics. Partners may interpret ADHD symptoms — forgetfulness, emotional volatility, difficulty with household tasks — as carelessness, laziness, or a lack of love. Without the framework of a diagnosis, these patterns are easy to personalise. Research indicates that the divorce rate among adults with untreated ADHD is nearly twice that of the general population.

Career and finances

Untreated ADHD is associated with lower educational attainment, higher rates of unemployment, more frequent job changes, and lower lifetime earnings. A landmark study estimated that untreated ADHD costs the UK economy £21 billion per year in lost productivity, healthcare costs, and social services. On an individual level, many people with undiagnosed ADHD describe a pattern of underachievement — knowing they are capable of more, but unable to consistently deliver.

Physical health

The impact extends beyond mental health. Adults with untreated ADHD are more likely to experience obesity, substance misuse, accidental injuries, and cardiovascular problems. The impulsivity and poor self-regulation associated with ADHD can affect diet, exercise, sleep, and adherence to medical advice.

What are your options?

You do not have to wait 3+ years for an answer. There are alternative pathways that can get you assessed significantly faster:

Getting support while you wait

If you are currently on an NHS waiting list and are not yet ready to pursue an alternative route, there are still things you can do to support yourself in the meantime:

• Take a screening questionnaire. Our free ADHD screener can help you understand your symptoms and feel more prepared for your eventual assessment.
• Educate yourself. Understanding ADHD — how it works, how it affects you, and what strategies can help — is valuable even before a formal diagnosis.
• Join a support community. ADHD UK, the ADHD Foundation, and numerous online communities offer peer support, information, and connection with others who understand your experience.
• Speak to your GP about interim support. While your GP cannot diagnose or treat ADHD without a specialist assessment, they can support you with co-occurring anxiety or depression, refer you for talking therapy, and monitor your wellbeing.
• Explore workplace adjustments. Under the Equality Act 2010, if you suspect you have ADHD and it affects your ability to work, you may be entitled to reasonable adjustments even without a formal diagnosis. Speak to your employer or HR department.

Recent policy changes and what's being done

The scale of the ADHD waiting time crisis has attracted increasing political and media attention. Several developments are underway, though their impact will take time to materialise:

NICE guideline review. The National Institute for Health and Care Excellence (NICE) has committed to reviewing its ADHD guidelines, with a particular focus on adult diagnosis and access to services. The updated guidelines are expected to address workforce planning, diagnostic pathways, and the role of non-specialist clinicians in assessment.

NHS Long Term Plan. The NHS Long Term Plan includes commitments to improving mental health services, including neurodevelopmental conditions. However, specific funding for adult ADHD services remains limited, and progress has been slower than anticipated.

Parliamentary attention. Multiple parliamentary inquiries have examined the state of ADHD services in England. The All-Party Parliamentary Group (APPG) on ADHD has called for increased funding, improved training for GPs and clinicians, and a national strategy for neurodevelopmental conditions.

Right to Choose expansion. The Right to Choose pathway has expanded significantly, with more providers now approved to deliver NHS-funded assessments. This has helped reduce waits for many patients, though demand for Right to Choose providers is also growing.