Microsoft Walks Away From Essex AI Hub

Microsoft has pulled out of Nscale’s planned AI datacentre in Loughton, a setback for a project the UK government had held up as a flagship piece of national AI infrastructure.

The significance is not just commercial. Ministers had cited the Essex site when presenting the UK’s AI strategy in 2025, describing it as the country’s largest “sovereign” AI datacentre. That language now meets a harder fact: the scheme has lost its anchor tenant, with power supply doubts still unresolved.

The Guardian, citing reporting first published by the Telegraph, said Microsoft had informed Nscale it was ending its agreement for the site over concerns about electricity supply. The company had been expected to be one of the project’s biggest customers and was the only one publicly identified.

Nscale said it remained committed to the Loughton project and was exploring alternative power sources for the site, along with other expansion locations in the UK. It also said its relationship with Microsoft remained “strong and long-term” and that the grid problem had no effect on its other contracts. The company still has a separate Microsoft-linked project in Norway, according to The Guardian.

What changes here is straightforward. The government can announce strategy and lend political weight to a development. It cannot will grid capacity into existence. If the power is not there, the rest is brochure copy.

Questions around the site were already public. In March, The Guardian reported that the location was still operating as a scaffolding yard. It later emerged that power constraints meant a long delay before the facility could come online. Microsoft’s exit turns those concerns from embarrassment into a direct threat to the project’s credibility.

Nscale has marketed itself as a British “sovereign” datacentre provider and is backed by technology companies including Nvidia. The loss of its only named customer at Loughton does not prove the project is dead. It does show how much of the earlier political pitch depended on assumptions not yet secured in practice.

No revised delivery date or replacement tenant was reported.