According to The Guardian.
The Bomb Sight project is mapping the London WW2 bomb census between 7/10/1940 and 06/06/1941. Previously available only by viewing in the Reading Room at The National Archives, Bomb Sight is making the maps available to citizen researchers, academics and students. They will be able to explore where the bombs fell and to discover memories and photographs from the period.
The project has scanned original 1940s bomb census maps , geo-referenced the maps and digitally captured the geographical locations of all the falling bombs recorded on the original map. The data has then been integrated into 2 different types of applications: