President Donald Trump’s second state visit to the UK from 16‑18 September 2025 culminated in what the British government described as a record £150 billion in inward investment pledges from US firms. Reuters reported that these commitments span technology, finance, energy and advanced manufacturing sectors and are expected to create about 7,600 jobs in Britain. The largest single pledge came from Blackstone, while Microsoft alone committed £22 billion toward cloud infrastructure and the construction of a new AI supercomputer in Loughton. Trump was formally welcomed to the UK by King Charles III and Queen Camilla at Windsor Castle. On 17 September, a banquet was held, followed by meetings with Prime Minister Keir Starmer at Chequers, during which the Tech Prosperity Deal was signed. That agreement aims to deepen cooperation between the UK and the US in artificial intelligence, quantum computing, and civil nuclear energy. Britain’s prime minister expressed that the deals will help revive economic growth in key regions and give fresh momentum to the UK’s tech sector. Despite criticism from some quarters over inviting Trump to a second state visit, the government appears to view the economic gains as substantiating the diplomatic choice. Trump and Starmer praised the “special relationship” between the two countries in public statements. They avoided major disagreements during joint appearances, particularly in reference to immigration, tariffs, and foreign policy in the Middle East. Observers noted that the visit was heavily managed to prevent potential diplomatic missteps. Modular nuclear reactor projects were among the specific outcomes. US firms and UK partners committed to building several advanced reactors, including projects in Hartlepool and other regions. These are expected to address energy security concerns and contribute substantially to the UK’s clean energy ambitions. The investment package is the largest ever associated with a UK state visit. Private equity, AI, data infrastructure and nuclear energy all play major roles in the commitments. However, critics caution that such big numbers risk being symbolic unless matched by regulatory clarity and delivery in areas such as AI governance and trade barriers. There were protests in London and other cities. Demonstrators voiced opposition to Trump’s record, especially on issues like Gaza, Ukraine, climate policy, and his past associations. The government faced pressure both domestically and internationally to ensure that the visit would not be overshadowed by controversies. As the visit concluded, Trump expressed gratitude for the honors extended by the royal family and for the welcome he received. Starmer emphasised that Britain is open for business and committed to maintaining strong ties with the US, especially in fast‑moving sectors like AI and nuclear.  (Photo by Phil Noble - WPA Pool/Getty Images)...