LowNSlow and CharlieOneSix,
I should have been more specific with my question. I've seen "Piece of Cake" and the YouTube videos. I was querying the specific photo that FL posted, which is inconsistent with the video and the other stills I've seen.
The flightpath looks wrong and the "reflections" of the Spitfire and the bridge are very suspect. I'm convinced it was Photoshopped.
Simon