Having had a bit of a look at it: I'm glad I got it cos for £3 it's worth it for the recipes. However, there is hardly any explanation of how to do anything. The book has been written in a day practically, I reckon, other than the assembling of recipes that represent each style. The recipes look good, but there is just one of each style, and only in 23 litre quantities.
It's worth getting at that price if you are a new AG brewer wanting to brew a good example of various styles of beer, and get an overview of the styles you are most likely to brew. I have Wheelers Classic European beers book and it has a better balance between recipes and brewing guidance. I'm sure BYOBRA does too, with it's selection of recipes for commercial real ales. How to Brew by John Palmer has much more in depth information and is a fantastic book for anyone wanting to get to grips with extract or all grain brewing. It has a few example recipes but lots of explanation. You won't read it in a hurry, you will keep going back to it, and gradually learn more.
I still think there's room for a book written from a British angle that looks at modern home brewing and explains clearly how to make different styles of beer that are popular now and what ingredients to use and how to create recipes, the effective use of different yeasts and hops, etc.
That said, these things quickly get out of date, so a really good online resource makes more sense, and forums like this and websites like byo.com, beerandwinejournal.com and others provide constantly updated and in-depth brewing information and recipes.