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Other·P Space·Model-prefilled problem·Published 2026-07-20

OpenAI shelves Stargate UK in blow to Britain’s AI ambitions

OpenAI has put on hold plans for a landmark UK investment citing high energy costs and regulation, in a blow to the government which has put AI at the centre of its growth strategy. Stargate UK was a part of the UK-US AI deal announced last September, in which US companies appeared to commit £31bn to the UK’s tech sector, part of a larger series of investments intended to “mainline AI” into the British economy. It came as the Labour government seeks to make AI and datacentres the engine of its growth plans, alon…

TRV-2026-0291JournalismPermanent record — cite & verify
OpenAI shelves Stargate UK in blow to Britain’s AI ambitions

Publisher image: The Guardian.

The quick read

On 9 April 2026 The Guardian reported OpenAI had put on hold Stargate UK, a flagship element of a September 2025 UK-US AI deal that was presented as part of £31bn in US tech commitments. The plan involved OpenAI exploring offtake of 8,000 Nvidia chips at datacentres to be built by UK firm Nscale to provide sovereign compute for government and other UK institutions.

The pause matters because the Labour government had positioned AI and datacentres as an engine of growth and data security, and critics cited it as evidence of high energy costs and weak industrial strategy. What remains uncertain is whether conditions for long-term infrastructure investment will return, whether Nscale can deliver, and how much of the originally announced investment was ever firm.

Main points
  • Stargate UK was part of a UK-US AI deal announced in September 2025 linked to a claimed £31bn in US tech commitments.
  • The project was intended to deliver sovereign compute using 8,000 high-powered Nvidia chips at datacentres built by partner Nscale.
  • A Guardian investigation found a related supercomputer due in 2026 was still a scaffolding yard in Essex a month before the pause.
  • Nscale, tasked with building key Stargate datacentres, had never built a datacentre before and was aiming for 2027 delivery.
Problem

OpenAI put Stargate UK on hold in Britain, citing high energy costs and regulatory uncertainty, delaying planned sovereign compute datacentre capacity.

The rundown

By 9 April 2026, OpenAI had told media it would pause Stargate UK and continue to explore the project, while the government said it was continuing to work with OpenAI and others to strengthen UK compute capacity.

The article notes UK industrial electricity prices were already the highest in Europe before rising further due to the US-Israel war on Iran, and cites analysts saying high energy costs and competition with rivals like Anthropic reduced urgency for the build-out.

Sources

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