Last month, a BBC investigation found that many areas of the UK have such long backlogs for adult ADHD assessments that it would take at least eight years to clear them. The investigation suggests there are currently at least 196,000 adults on waiting lists across the UK.

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Since 2019, there has been a 51 per cent increase in prescriptions for ADHD medications such as methylphenidate and lisdexamfetamine, according to the Nuffield Trust. But it has still not caught up with demand. In April, the trust said 24 per cent of patients referred for ADHD in England were having to wait one to two years for an assessment. Rising demand fuelled by increased awareness of ADHD symptoms, coupled with limited capacity, has contributed to the backlogs, with three trusts having closed their waiting lists completely.