I have been reading a blog called Shut Up about Barclay Perkins.
It is authored by Ron Pattinson. It is a wealth of information about the history of beer in the UK all of it Real Ale. It is for the real beer brewing geek. Lots of information from repositories of records of brewing. He has written a good number of books coming from the blog information. You’ll understand how this can be if you look at the site. Lots of tables of information and commentary about it.