Faisal Islam: Will the US tech bromance turn around the UK economy?

In the old Camden Town Hall opposite London's St Pancras station, away from the white tie and tails of the pageantry at Windsor Castle, was perhaps the most substantive display of the consequences of Donald Trump's state visit. In front of Prime Minister Sir Keir Starmer, many members of the British and US cabinets and the cream of the European tech industry, a highly-crafted video played, featuring the long history of UK science. It included George Stephenson, Charles Babbage, Ada Lovelace, Alan Turing and Sir Demis Hassabis, with dozens of UK start-up companies from every corner of the country listed. It was a cross between a UK government investment promotion video and the Danny Boyle 2012 Olympic Opening Ceremony, except for one crucial detail - it was voiced by Jensen Huang, the American Nvidia artificial intelligence (AI) and microchip magnate. This week, Trump said the tech tycoon was taking over the world and the boss of the company, which hit a market value of $4tn (£2.9tn) this summer, appears to have gone all-in on the UK in quite an extraordinary way.