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Top American firms, led by Microsoft, have pledged £31 billion ($42 billion) in UK investments as Britain and the United States signed a new “Tech Prosperity Deal” to strengthen cooperation in artificial intelligence, quantum computing, and civil nuclear energy.
The agreement was unveiled during US President Donald Trump’s second state visit to Britain, which included a royal welcome at Windsor Castle on Wednesday, hosted by King Charles.
The British government said the deal would advance AI healthcare models, expand quantum computing capabilities, and streamline civil nuclear projects, supporting growth, research, and energy security on both sides of the Atlantic.
Prime Minister Keir Starmer hailed the pact as one that could “shape the future of millions of people” and deliver growth and security. With the US already Britain’s largest trading partner, Starmer hopes light-touch regulation, similar to America’s, will attract further investment — in contrast to the EU’s more interventionist approach.
Major Investments Announced
- Nvidia will roll out 120,000 GPUs across Britain, its biggest European deployment, and supply up to 60,000 Grace Blackwell Ultra chips in partnership with Nscale, OpenAI, and Microsoft for Britain’s largest AI supercomputer.
- Microsoft committed £22 billion to expand AI and cloud infrastructure, including a new supercomputer in Loughton, north-east London. CEO Satya Nadella said the company aimed to ensure America remained a “trusted and reliable tech partner” for Britain.
- Google pledged £5 billion, including a new data centre in Waltham Cross and continued DeepMind research.
- CoreWeave announced £1.5 billion for energy-efficient data centres with Scotland’s DataVita, bringing its UK total to £2.5 billion.
Other investors include Salesforce, Scale AI, BlackRock, Oracle, Amazon Web Services, and AI Pathfinder, with commitments ranging from hundreds of millions to several billion pounds.
Nvidia vice president David Hogan said the projects would “truly make the UK an AI maker, not an AI taker,” while Microsoft president Brad Smith praised improved relations with Britain after regulatory disputes were resolved.
