Somewhat related, "Health Secretary Wes Streeting is launching an independent review into rising demand for mental health, ADHD and autism services in England." https://www.bbc.co.uk/news/articles/ce8q26q2r75o
Working in IT I've came across lots of extremely smart people with their quirks and eccentricity (not exclusive to smart people of course), I guess there's just a higher proportion of _quirky_ smart people in IT. A lot of the time it just seems to be introversion- it seems lack of interaction with society has to be justified.
For a long time ADHD was ignored or dismissed in the UK as an "americanitis", so it's no surprise that there's a backlog of people who weren't diagnosed in childhood.
[0] https://www.england.nhs.uk/long-read/report-of-the-independe...
In fact the pattern is almost the opposite of what you'd see in the US where it would be hard to get diagnosed with a SpLD and e.g. ADHD was more widely recognised. But the rub lies in the fact that ADHD, ASD and many SpLDs have fairly high rates of comorbidities with one another, to the point where if you've got dyspraxia and no other diagnosable comorbidity, you're actually in the minority of people with it.