That would be the Olympics at Stratford, built on a site which used to make locomotives when the Olympics were last here in 1948 according to Jonathan Glancey.
Glancey implies that we don't make trains any more so these ones were imported from Japan*. Never mind, I'm sure someone in the City of London arranged the financing deal, insured it and offset the risk with some clever derivative instrument.
But now the City's buggered, might it just be an idea to have an industrial policy which worked to turn that situation around, so we could build more stuff like this? Or even, somewhat more to the point, stuff like Vestas wind turbines? Go look at the Vestas 2008 order book at the bottom of this page: not one order from Britain. 240 wind turbines ordered by China.
*I'm told this is not so - see comments from John B