President Donald Trump and U.K. Prime Minister Sir Keir Starmer on Thursday signed a sweeping $340 billion Tech Prosperity Deal, billed as the largest investment package in Britain’s history.
The pact — heavy on AI, nuclear power, and next-gen industries — promises 15,000 U.K. jobs, record-breaking U.S. investments, and a new economic blueprint for transatlantic growth.
Key Takeaways
- $340B U.K.-U.S. deal marks Britain’s biggest investment package ever.
- U.S. tech giants pledge billions to expand AI and data centers in U.K.
- 15,000 British jobs promised through AI, energy, and research projects.
- Nuclear power pact includes 12 advanced reactors in northeast England.
- Trump calls it proof of U.S.-U.K.’s “unbreakable” special relationship.
Inside the Numbers
- £150B ($204B): U.S. corporate pledges to U.K. investment, including £90B ($122B) from Blackstone over the next decade.
- $30B: GSK’s investments into U.S. pharmaceutical operations.
- 15,000: New jobs forecast in Britain.
- $340B: Total estimated deal value.
President Donald Trump and U.K. Prime Minister Sir Keir Starmer on Thursday signed what both leaders hailed as a “groundbreaking” U.K.-U.S. Tech Prosperity Deal, a record-breaking £250 billion ($340 billion) package that officials said represents the largest investment agreement in Britain’s history.
Announcing the deal in London, Starmer said the commitments marked “the biggest investment package of its kind in British history by a country mile,” with £250 billion flowing both ways across the Atlantic. “This is a blueprint to win this new era,” he added.
The pact centers heavily on artificial intelligence. Microsoft confirmed a $30 billion investment, while Google pledged $6.8 billion, joining Nvidia, Salesforce, OpenAI, and infrastructure firm Nscale in backing U.K.-based projects. Among the headline items is a plan to build the country’s largest supercomputer in partnership with Nscale, alongside new data centers and research hubs.
According to Downing Street, the AI investments are expected to create 15,000 high-skilled jobs across Britain in the coming years. Starmer said the deal would deliver “cutting-edge British jobs for years to come” and place the U.K. at the forefront of global AI innovation.
The agreement also extends into the energy sector. Starmer announced that 12 advanced nuclear reactors will be constructed in northeast England, a move designed to power millions of homes and businesses while lowering energy bills and boosting long-term energy security. “To fuel this revolution, we have struck a new deal on civil nuclear power,” he said.
U.S. firms are contributing the lion’s share of the investment. Downing Street said American companies had pledged around £150 billion ($204 billion), including £90 billion ($122 billion) from Blackstone over the next decade. Pharmaceutical firm GSK also announced nearly $30 billion in U.S.-based investments, highlighting the deal’s two-way nature.
At a joint press conference, Trump praised the U.S.-U.K. relationship as a foundation of global stability. “It’s an unbreakable bond we have. Regardless of what we’re doing today, I think it’s unbreakable,” he said. “The United States and the United Kingdom have done more good on this planet than any two nations in human history.”
Trump also thanked Starmer and his wife, Victoria, for hosting him at Chequers, and paid tribute to King Charles III and Queen Camilla after attending a state banquet at Windsor Castle with former First Lady Melania Trump. “I will forever be thankful to the King for the fantastic time we had,” he remarked.
Officials called the Tech Prosperity Deal the largest commercial package ever secured during a state visit, highlighting its symbolic and strategic weight at a moment when the U.S., U.K., EU, and China are competing to dominate the technologies of the future. Starmer emphasized that the deal extends into “quantum computing, fusion, 6G, and civil nuclear energy,” while Trump said the package would help spur deregulation and innovation.
Analysts said the pact cements American firms as the backbone of the U.K.’s AI sector, raising questions about technological sovereignty but also providing a dramatic boost to Britain’s global competitiveness. “Foreign-led investment of this scale turbocharges growth, but the test will be how much of it flows into local talent and startups,” one London-based economist said.
Work on the nuclear projects is expected to begin within 18 months, while AI research hubs and supercomputing facilities could be operational as soon as next year. Both governments pledged to fast-track regulatory approvals to ensure momentum.
For Starmer, the agreement represents an early flagship achievement as prime minister. For Trump, it underscores his message of renewed strength in the U.S.-U.K. “special relationship.” Whether the ambitious package delivers on its promises will depend on how swiftly investment commitments translate into real-world jobs, infrastructure, and energy security.