I was just browsing the Itunes in search of a good guide, and I found the Time Out : London and many others are free (maybe for a time). So if you want a small and easy guide to use while on the go, and you own an Iphone go for it. TIME OUT
Another great app that I found for London is ... Museum of London: Streetmuseum which give a wide range of old and new attractions in London, it's really great and interactive
Another great app that I found for London is ... Museum of London: Streetmuseum which give a wide range of old and new attractions in London, it's really great and interactive