Nvidia, OpenAI and Microsoft announce investments as part of multibillion-dollar package alongside Trump visit

Donald Trump’s arrival in the UK on Tuesday night was accompanied by a multibillion-dollar transatlantic tech agreement.

The announcement features some of the biggest names from Silicon Valley: the chipmaker Nvidia; the ChatGPT developer, OpenAI; and Microsoft. Big numbers were involved, with Microsoft hailing its $30bn (£22bn) investment as a major commitment to the UK – and adding, in an apparent swipe at its rivals, that it was not making “empty tech promises”.