Book recommendations for anarchism in 20th century Britain

So, I read the Wikipedia page on anarchism in the UK (and noticed there were some books in the Further reading section, as well), but if anyone can recommend any decent books (or articles) to build upon this, that cover the development(s) of 20th century British anarchism, I'd be grateful.

Also, any documentaries on anarchism in Britain? I swear, even decent documentaries on Marxism are easier to find (e.g. this one, by Stuart Hall).

Also, is this complete? https://libcom.org/history/slow-burning-fuse-lost-history-british-anarchists

Thanks.