One of London's Virgin-branded air ambulances taking off after a landing in Leytonstone. Shiny noisy red machine!

Unfortunately I only had my cameraphone with me to catch it with, and my thumb is visible in frame because I was clutching the damn thing so hard with all the dust whipping into my face!

The sound you hear at the end is all the kids from the primary school (out of frame on the left) cheering. :) (less info)