I just want to pack my bags, hop on a train and go where Steve went. He's got a way of describing things that makes you wanna go there.
It's not only a great book for those who haven't been to Britain, as the descriptions are very informative, but those who live in Britain will no doubt enjoy recognising the locations they've visited and be inspired to visit those they haven't already.
Steve also interweaves little tidbits about the Harry Potter books that make you go "hang on a sec ...".
If you're into Potter, buy this book. If you're not into Potter but are into Britain, buy it anyway.