Thanks guys. The photo was taken in central London on the back of St Martins-in-the-Fields church, near Trafalgar Square. I was walking around on my own to photograph, like I did many times when I was living in London, when I came across this guy. He was actually with another guy which was shooting video. This photo is a part of a sequence of images that cover the full jump. This guy was pretty good!!
The photo was taken with a D700 + 24-70 f/2.8.