U.S. tech companies unveiled £31bn of investments in Britain tuesday, timed for the arrival of President Donald Trump on his second state visit to the country. OpenAI, Nscale and Nvidia announced a U.K. version of Stargate, a massive AI infrastructure scheme with its first data centers slated to be located on the site of a former coal power station in Northumberland, north-east England. The U.K. government said Tuesday the site near Blyth would become an AI Growth Zone  areas ...