Based just outside London, photographer Jason Hawkes has been making fascinating aerial images since 1991. One of his specialties is nighttime photography, where he mounts his camera to a gyro-stabilizer and takes photos directly from the open door of a helicopter. Jason has been generous to me over the years, and once again he has shared a group of stunning images. As we approach the London Summer Olympics, let Jason give you a preview tour of London and other cities in the U.K.