What a beautiful picture.
It makes me wonder if John has also heard of a recent London phenomenon that has in the last few years become a myth, known as 'The Angel of the Thames'. People have claimed to see an angel in the sky along the Thames near to Jubilee Gardens (from the South Bank, that's roughly opposite the OXO Tower) with stories that the angel has been sighted over hundreds of years.
However, in a William Gibson-esque fashion - there is compelling evidence (overwhelming in fact) that the whole thing was a viral marketing campaign for a charity organisation started back in 2006.
Evidence for;
http://www.angelofthethames.com/ Evidence against;
http://transpont.blogspot.com/2008/11/angel-of-thames-hoax-brockley.html Passing the South Bank only the other week, I saw various tour groups stood steadfast opposite the spot trying to capture an 'angel' on camera.
Gazza