This site offers free access to 96,000+ old aerial images of Britain. It features some of the oldest and most valuable images of the Aerofilms Collection, a unique archive one million+ aerial photographs 1919 and 2006. The photographs on the website date from 1919 to 1953 and can be downloaded. You can browse the images or search by place name, map or year. If you register (free) you can sign in to zoom into image and contribute information about an image.