As regular readers of the Zythophile blog will expect there's an impressive level of carefully researched detail, and not all about what you might expect. When discussing the various beers found in the different styles some pretty obscure ones get mentioned, even some that are probably best forgotten about. The beers styles are mostly defined by the simple and sensible method of using what the brewers called them, though an old favourite of mine, Ind Coope Burton Ale is singled out for criticism for it's gratuitous misnaming.
Reading about the rich and varied history of British Beers has been inspirational to me as a brewer. I've already brewed a unhopped lemon balm ale (like my previous unhopped ales still a bit shit sadly) and I have a culture of a Brettanomyces yeast waiting in my fridge until the traditional brewing season opens in October, which I think will be a fitting time to brew a Colne Spring Ale inspired stock ale.
I can thoroughly recommend the book to brewers and beer historians, and I dare say those whose interest in beer is simply in drinking the stuff will get a lot out of it too.