Ttb,
I'm not saying Chelsea and Vauxhall are alike, I'm saying the Rail bridge to the East of Chelsea looks very much like Vauxhall. Vauxhall may well be red, but given the conditions, I woud say not bright enough.
Would you really say that on a grey overcast morning looking through a gap in the fog, that Vauxhall looks totally different than the rail bridge?
http://i52.photobucket.com/albums/g1...hallBridge.png
http://i52.photobucket.com/albums/g1...helseaRail.png
Not really wanting to start a discussion on colour and its properties in low light conditions, but I would say that the curves on the arches on the rail bridge would easily lead to it being confused with Vauxhall.
I feel some of those optical illusion pix coming on
If you could get some from off river, as in more like the route PB took over the HoP, that would be better than from actually over the river. Looking at my high photo, I suspect that from abeam the eye, Vauxhall would be obscured by the RBS building.