UK-based infrastructure firm Nscale will construct the country’s most powerful AI supercomputer at its AI Campus in Loughton, in partnership with Microsoft, NVIDIA and OpenAI.
The facility will launch with 23,040 NVIDIA GB300 GPUs, expandable to 90MW of AI power, and will deliver Microsoft Azure services across the UK economy. It is part of a wider Nscale plan to deploy 58,640 GPUs nationwide and 300,000 globally.
Nscale is also working with OpenAI and NVIDIA on Stargate UK, an infrastructure platform for sovereign workloads requiring strict data jurisdiction. Stargate will begin with 8,000 GPUs, potentially scaling to 31,000 across multiple sites including Cobalt Park in the North East’s new AI Growth Zone.
A further 4,600 GPUs will support NVIDIA’s DGX Cloud, expanding the DGX Lepton Marketplace for AI developers.
Prime Minister Sir Keir Starmer hailed the initiative as a “decisive move” towards making Britain an AI leader, promising jobs, investment and stronger public services. Microsoft’s Satya Nadella described the project as deepening the UK–US technology partnership, while NVIDIA’s Jensen Huang called it a “historic chapter” in transatlantic collaboration. OpenAI’s Sam Altman said the UK’s long AI pedigree made it an ideal base for accelerating economic opportunity.
The project sits within the £31 billion UK–US Tech Prosperity Deal, agreed during President Donald Trump’s 2025 state visit, covering AI, quantum and civil nuclear energy. Microsoft has pledged £22 billion for UK AI infrastructure, while NVIDIA will roll out 120,000 GPUs nationwide. Google is investing £5 billion in DeepMind expansion.
The investment is expected to drive economic growth, create thousands of jobs and support research in medicine, drug discovery and national security. Sovereign infrastructure through Stargate UK will also ensure compliance with jurisdictional rules for sensitive sectors.
British innovation is further embedded in the partnership, with Arm’s chip designs contributing to NVIDIA’s new Grace Blackwell series processors.
Some US trade groups have warned of regulatory uncertainties in the UK, but industry leaders see the projects as positioning Britain in the “Goldilocks zone” where talent, research and industry converge.
Alongside a sister project in Norway housing 100,000 processors powered by hydropower, Nscale’s UK supercomputer marks a step change in global AI capacity and places Britain at the heart of the next industrial revolution.
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