‘Reason I canceled my trip to London,’ Donald Trump tweeted last month, ‘is that I am not a big fan of the Obama Administration having sold perhaps the best located and finest embassy in London for “peanuts,” only to build a new one in an off location for 1.2 billion dollars. Bad deal. Wanted me to cut ribbon-NO!’ The only fact he didn’t get wrong was the cost of the new US Embassy in Nine Elms. It looks like a billion dollars, too. From Vauxhall, the shiny green cube brings to mind an enormous pallet of dollars from a movie, but with a seemly swathe of translucent plastic skin on three sides. Up close, though, the skin stretches away from the glass uncomfortably, and the effect is more reminiscent of the piratical accountants’ building at the beginning of Monty Python's The Meaning of Life.