I spotted Ray Mears wearing a pin-stripe suit yesterday, a most unexpected sight. I think he was adopting attire that allowed him to blend in.
Difficult to see from H4 but if you're at 0ft AGL there's an exhibition of Jiri Rezac's photography showing the effects of oil extraction in tar sands. Worth a look if you're passing City Hall in London.
Tarnished Earth images grace London's South Bank - Features, Art - The Independent