Forgot to mention that Robert Chapman is interviewed on the Pluto Books podcast: www.plutobooks.com/blog/podcast-empire-of-normality/

If you want to buy it, there's a discount code associated with the podcast.

I'm making my way through it pretty slowly, partly because I'm making so many notes and partly because I mismanaged my library ebook holds and far too many came in all at once! Really impressed so far, especially by the chapters on eugenics and anti-psychiatry.