I spend a weekend in London every year, and have seen all the main attractions and some of the less-visited ones. I looked at this book and a few similar ones on my most recent visit, and this looked the most interesting. It turned out to be a good choice. My wife and I did two of the 13 walks (Notting Hill and Spitalfields & Whitechapel); we'd been to both areas previously, but having the book with us made them far more interesting. The book gives a great picture of the history of the areas, and focuses not just on existing buildings, but also the people who frequented the area. It points out things 99% of visitors would otherwise overlook (e.g., a small Jewish coat of arms in Whitechapel, the premises of the Whitechapel Bell Foundry - the oldest surviving manufacturing company in the UK, the locations of some of Jack the Ripper's crimes, the scene of Jimi Hendrix's death ...). There are many small colour photographs to make sure that the reader doesn't miss anything. There is much more detail than in a standard guide book, but it is entertainingly written, and covers everything from architecture, immigration and cultural influences to movies and criminals. The only problem I experienced was that the maps weren't always entirely accurate (e.g. slightly misplaced locations of a couple of attractions), but with a little bit of looking around there was no problem finding everything. As the previous reviewer noted, the book is an entertaining read even if you are not doing the walks, and with its help I'm already planning our next visit.