NHS Faces System Failures as ADHD and Autism Waits Pass 800,000
The NHS in England faces a "world of system failures" as demand for mental health, ADHD and autism care grows faster than services can provide, according to a government-commissioned inquiry reported on 8 October 2026.
The 607-page report was led by Prof Peter Fonagy, a psychoanalyst and clinical psychologist at University College London, with psychiatrist Prof Simon Wessely as vice-chair. It completes a UK government review launched to build the clinical evidence base and examine what is driving rising demand for services The Guardian.
Among 16- to 64-year-olds in England, the share with a common mental disorder, such as depression and anxiety, rose from 15.5% in 1993 to 22.6% in 2024. Among 16- to 24-year-olds, it rose from about one in six to one in four over the same period.
Waiting lists have grown. At the end of 2025, more than 560,000 people in England were waiting for ADHD assessment, 17 times the number in 2019. Another 254,000 were waiting for autism diagnostic assessment. Together, the combined list was more than 800,000. Ninety percent had waited at least three months.
The review found a growing risk of overdiagnosis of autism and ADHD. It urged ministers to tighten regulation of private clinics that offer ADHD and autism assessments. It also called for access to care to be based mainly on a person's needs, a change meant to cut years-long waits for a formal diagnosis.
Right now, a formal diagnosis acts like a gate. It controls access to treatment, extra help in education, and benefits. Under a needs-led model, people could get help based on how much daily life is affected, without waiting for that label. That would require local NHS planners, known as commissioners, to define need, severity and functional impairment in ways that can be checked and applied consistently across regional bodies known as integrated care boards.
Ministers published terms of reference for the independent review into the prevalence and support for mental health conditions, ADHD and autism on 4 December 2025. An interim report covering England was published and then updated on 10 June 2026, alongside a standing collection of review documents GOV.UK.
In September 2026, a plan to limit NHS diagnoses of ADHD was attacked by critics as ‘rationing’ healthcare.
The broader context here is a clash between need, diagnostic practice and state capacity. Rising identification reflects greater awareness, wider criteria and more help-seeking, alongside real growth in illness among young adults. Private assessment markets have expanded to meet excess demand, creating parallel diagnostic standards that the NHS is then asked to honour through prescribing and shared care. For policymakers, the choice is not only about funding more assessments. It is whether to keep diagnosis-led access and accept longer queues, or shift to needs-led provision and defend that change to patients, families, clinicians and the courts.
