The Access guides are generally not as up-to-date as some other guides, but their design is my favorite for guidebooks. Rather than having sections for hotels, restaurants, sights, etc., the Access guides are ordered by neighborhood and the hotel, restaurant, etc. information is color-coded within the neighborhood sections. It's very simple to get a grasp of what's around you as you walk around. Plus, since Wurman is an architect, there's a lot more architectural information in these books than in other guidebooks. I just wish that they would go back to the spiral binding.
Includes color coded places to dine, attractions, entertainment and accommodations with easy to follow price ranges. Gives insider pointers to attractions and free things to do instead of the pricer options for tourists. Also tells you good times to go to London so that you aren't fighting for good seats and prices against other tourists.