I thank my hon. Friend, the vice-chair of the all-party parliamentary group for ADHD, for that intervention. He is absolutely right to mention that the lack of data causes a mismatch and a bit of a postcode lottery, which I will address later.
At a recent APPG meeting, we heard stories of people waiting years for a diagnosis—years battling without the support or guidance they need, falling behind in school, or struggling in their occupation. We heard stories like that of my constituent Mick, whose son has suffered enormously, falling into crime before he was diagnosed, which unfortunately is all too common. About 25% of male prisoners are thought to have ADHD.