Microsoft has pulled out of an agreement to serve as the primary customer for a massive AI datacentre in Loughton, Essex, dealing a significant blow to the project’s viability. The development, led by British firm Nscale, was previously celebrated by the government as the nation’s largest sovereign AI datacentre upon its 2025 announcement. Heralded by ministers as the country’s largest AI datacentre when it was announced in 2025, was planned to open at Loughton in Essex next year, the development by the British company Nscale.
This withdrawal follows recent disclosures that the project faces substantial energy constraints. Earlier this month, UK Power Networks (UKPN) informed Nscale that it would be unable to provide the necessary power capacity for the site until the early to mid-2030s. The site, which previously housed a scaffolding yard, has been cleared, but the lack of a quick resolution to these energy demands has stalled progress. Doubts had already emerged about the scheme after revealed in March that the location was still an operational scaffolding yard. It comes a month after it emerged that power supply problems meant the project would face a lengthy wait before coming online.
The loss of Microsoft as an anchor tenant is particularly critical for Nscale, as it leaves the company without any publicly declared customers for the Loughton site. While the company maintains that its relationship with Microsoft remains strong, noting that the tech giant is still involved in a separate Nscale project in Norway, this latest development complicates Nscale’s broader corporate ambitions.
The company, which counts Nvidia among its backers, has been working toward a potential Wall Street initial public offering that could value the firm at $35 billion.
Any delay or cancellation of key projects could hinder these financial goals.
Notably, the firm’s board includes high-profile figures such as former Meta chief operating officer Sheryl Sandberg and former UK deputy prime minister Nick Clegg, the latter of whom holds a 0.25% stake in the company that could be worth approximately $88 million at the projected valuation. Datacentres are the central nervous system of AI technology such as chatbots.
The UK government, under Keir Starmer, has heavily promoted the role of AI in driving economic growth, explicitly identifying Nscale and the US-based CoreWeave as pillars of its strategy to establish sovereign AI infrastructure. Official data suggests that such AI-related investments have provided a buffer for the UK economy against broader global market volatility. The UK government’s proposals to harness the technology have focused on two Nvidia-backed companies: the London-based Nscale and the US company CoreWeave, targeting the rapid growth of AI to boost the economy. Official figures show investments in AI are among the factors helping Britain’s economy to beat expectations of a weaker growth performance this year as the war in the Middle East rattles global business activity.
Despite the setback, Nscale remains optimistic regarding its ongoing operations. A company spokesperson confirmed their continued commitment to the Loughton site and the UK market, stating they are currently investigating alternative power solutions, including on-site generation and faster grid connection methods, alongside other potential expansion sites.
Industry analysts have recently expressed concerns regarding the reliance on so-called “neoclouds” like Nscale. These entities, which maintain deep ties to Nvidia, are currently building essential infrastructure for the AI boom but may face vulnerabilities as energy hurdles and project delays accumulate. If Nscale is forced to postpone its New York market entry, these financial and operational risks could face increased scrutiny. There is, however, a growing chorus of voices which suggest that neoclouds may be a vulnerability in the broader AI economy, especially as delays pile up across partners.
