A unique online archive of over 10,000 aerial photographs has recently been launched. The photographs currently on the Britain from Above website cover the time period 1919 to 1953 and offer an interesting insight to this period for anyone studying or researching twentieth century British social history.
Britain from Above can be accessed here: http://www.britainfromabove.org.uk/
A lot of the photographs have limited information and members of the public are asked to register and contribute to the project.