Trump and Starmer sign major US-UK tech and civil nuclear deal

President Donald Trump and Prime Minister Keir Starmer on Thursday signed a major technology and civil nuclear partnership during the United States president's unprecedented second state visit to Britain, sealing a package of agreements aimed at deepening cooperation on artificial intelligence, quantum computing and new nuclear power projects. The signing at Chequers followed a day of royal pageantry at Windsor Castle and comes as both governments seek closer defence, security and economic ties.

U.S. officials said the agreements will underpin more than $10 billion in expected deals and include three pillars: a new science and technology partnership, cooperation on civil nuclear power and advances in defence technology. British officials and company announcements put total private-sector commitments far higher, with reports of tens of billions of pounds in pledges from major tech firms. The British government said the pact had already attracted substantial backing from U.S. companies, and Microsoft and Google announced large-scale investments in the UK’s AI infrastructure. Exact totals varied between briefings and media reports.

The technology pact is intended to accelerate...