The United States and United Kingdom have signed a £31 billion ($42 billion) Tech Prosperity Deal, marking one of the most ambitious transatlantic collaborations on artificial intelligence (AI), quantum computing and emerging technologies to date.
Finalised during President Donald Trump’s September 2025 state visit, the agreement is framed as “digital solidarity” by the Center for Data Innovation, reinforcing that both nations are stronger AI allies together than apart.
At its core are major US corporate investments. Microsoft is committing £22 billion to build Britain’s largest AI supercomputer in Loughton. Nvidia will deploy 120,000 GPUs across the UK, creating Europe’s largest AI cluster, while Google is investing £5 billion in expanded data centres and research through DeepMind. OpenAI is spearheading the Stargate UK initiative, anchoring an ‘AI Growth Zone’ in northeast England.
Prime Minister Keir Starmer heralded the deal as a strategic boost to Britain’s economy and status as a global tech hub. Diverging from the EU’s stricter stance, the UK is aligning with a lighter-touch regulatory framework closer to US preferences, intended to foster innovation while attracting international investment.
The pact extends beyond infrastructure, encompassing joint science, security and standards development under an updated Atlantic Charter. It strengthens cooperation on quantum technologies, digital regulation and critical supply chains.
Industry momentum is also building beyond the deal. Vantage Data Centers has pledged £12 billion to expand UK infrastructure, while Anthropic has partnered with the government on AI-powered public services.
Technology Secretary Peter Kyle said the partnership underscores AI’s transformative potential for regional wealth creation, citing Britain’s emergence as a preferred destination for cutting-edge investment. While some US trade groups have flagged concerns about unresolved UK digital policy, the broader consensus is that the alliance sets a powerful example of open-market democracies collaborating to advance responsible innovation.
The Tech Prosperity Deal cements the UK’s ambition to be a global AI leader, coupling world-class infrastructure with international cooperation to drive economic growth, ethical deployment and technological leadership in the digital age.
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