John Nuts wrote:
I can't make head or tail of what the metal construction on the
south side of Vauxhall bridge, near the MI6 building, is? It shows
this metal construction pointing upwards, WHAT ON EARTH IS IT?

I've been meaning to ask the same question myself. I think it's a
Network Rail initiative, based on a visit to Alton Towers. If you
emerge from Vauxhall NR station grumbling about the state of the track,
they say "If you think that was bad, just wait till you try out our new
ride ..."

--
Richard J.
(to e-mail me, swap uk and yon in address)