Microsoft pulls out of UK’s largest AI data centre

The Loughton project has not been cancelled, but its original plan has changed significantly. Microsoft has withdrawn from the project. That includes its planned role funding a supercomputer, while Nscale still intends to build the data centre.

Nscale announced a £2bn investment last year for the pioneering facility in Loughton, Essex. Microsoft had said some of its $30bn UK investment would fund the site's supercomputer. The site was due to receive electricity by year-end. However, a London-wide grid problem means that supply may not arrive until the 2030s.

Nscale is now exploring alternative power sources and other UK expansion sites. It says its relationship with Microsoft remains strong on projects in Norway, Portugal and the United States. The Loughton centre is still expected to create 250 permanent jobs. However, its opening timetable and financing arrangement are less certain.

An AI data centre is a specialised building filled with powerful computers, storage, cooling systems, and networking equipment. It matters because AI needs huge computing capacity to learn from data and answer users quickly. These facilities also require substantial electricity and cooling, making reliable power essential.

At Loughton, Essex, Nscale planned a £2bn facility, with Microsoft funding a supercomputer. A supercomputer combines processors, helping AI models train and handle demanding calculations faster. That speed supports repeated calculations for recognising patterns, generating text, and testing AI systems.

That plan has changed: Microsoft has ended its involvement, and the site's power connection is delayed until the 2030s. Nscale still backs Loughton, exploring alternative power sources; Microsoft projects continue in Norway, Portugal, and the United States. The eventual centre is expected to create 250 permanent jobs, but opening depends on securing power.

The planned Loughton AI data centre represents Nscale’s £2bn investment. It was designed to become the UK’s largest AI data centre. That scale matters because AI facilities require major buildings, power supplies, and specialised computing systems.

Nscale announced the pledge last year for the Essex project. Microsoft was expected to fund a supercomputer there as part of its UK investment. The supercomputer would have provided the high-performance computing needed for demanding artificial intelligence tasks.

Microsoft has now ended its involvement in the Loughton project. Nscale says it remains committed and is exploring alternative power sources, after grid supply was delayed until the 2030s. When eventually opened, the facility is expected to create 250 permanent jobs, but its launch date remains uncertain.

The delay is caused by a London-wide problem with the electricity grid, not a stated change to Nscale’s plans. The Loughton AI data centre cannot receive its planned power supply at the end of this year. Nscale says grid availability has moved delivery into the 2030s.

Nscale pledged £2bn to build the facility in Loughton, Essex, with Microsoft funding a supercomputer there. However, the company was told the site’s power would not arrive as scheduled. The source gives no more detailed technical explanation, describing it as an “unfortunate London-wide grid issue.”

Microsoft has ended its involvement, but Nscale says it remains committed to the project. It is exploring alternative power sources and other UK expansion sites. The Loughton project is still planned, but its opening depends on solving the power problem. It is expected to create 250 permanent jobs eventually.

The Loughton AI data centre is not cancelled, but its opening could be delayed if its planned electricity connection cannot arrive. Nscale says it remains committed and is exploring alternative power sources, which could help despite the wider grid problem.

Microsoft has ended its involvement in the Loughton project, although it had planned to fund a supercomputer there. The connection was due at the end of the year, but Nscale was told it may not arrive until the 2030s. Alternative sources could provide electricity sooner, reducing dependence on that delayed connection.

This would not guarantee an immediate opening, because Nscale has not identified the alternatives or confirmed their capacity. It says the London-wide grid issue does not affect its other contracts, while projects continue with Microsoft in Norway, Portugal and the United States. The Loughton centre is expected to create 250 permanent jobs when it opens.

AI supercomputers need dependable electricity because they run thousands of powerful chips continuously. Those chips process enormous amounts of information, and interruptions can stop work or leave expensive equipment unused. Reliable power also lets operators cool the machines safely.

The planned Loughton, Essex, centre shows the risk. Microsoft was expected to fund a supercomputer there, but the site’s electricity connection was delayed from the end of this year until the 2030s. Without a firm supply, Nscale is exploring alternative power sources, even though it remains committed to the project.

The delay matters because the facility was intended to become the UK’s largest AI data centre and create 250 permanent jobs. Nscale pledged £2bn for it, while Microsoft recently said part of its $30bn UK investment would support the supercomputer. Going forward, AI developers need power networks that deliver large amounts of electricity on time, or projects may face long delays despite funding and strong partnerships.

Electricity grids move power from generators through high-voltage lines, then lower the voltage near factories and data centres. A large site needs a dedicated connection, enough local capacity, and equipment that safely handles its demand.

Loughton’s planned AI data centre shows the challenge. Nscale pledged £2bn, but its expected power connection was delayed from the end of this year until the 2030s. Before connection, operators may need to reinforce cables or substations, secure permits, and coordinate construction. Those works can take years when projects compete for limited capacity.

Nscale described this as a London-wide grid problem, not a failure of the centre’s technology. Microsoft withdrew from Loughton, but Nscale remains committed and is exploring alternative power sources. The site could create 250 permanent jobs, yet opening depends on reliable electricity.