This is an excellent map of London. Evidently some of the tube information is a bit out of date, but aside from that minor quibble, it is a very sturdy and utilitarian map. I like that it is an accordion fold laminated card format, as it is eminently durable and near waterproof. It would be very difficult to damage.
It is particularly good to gain a 'lay of the land', particularly in the planning stages of a trip. It is quite easy to visualize where you will want to stay, visit, walk and ride. I like that it has a nice 'London walking tour' outlined, and has all prominent landmarks and points of interest clearly labeled. There is also an excellent and complete index, map of West End theatres, an inset map of inner London, and an underground map.
Overall, for initial trip and route planning as well as navigating London's sights, this is an excellent map at a bargain price!