UK Chancellor John Healey said on October 28 that the Government is launching a British data centre covenant. Critical sites that meet “strict tests” on local investment, jobs and water supplies will get the grid connections they need and, where necessary, will be allowed to build on-site generation while they wait.
Healey said the measures are part of a strategy to strengthen UK AI capabilities and keep sensitive data under British control. “When the NHS uses AI to treat patients, we want that data here. When our armed forces use AI to keep us safe, we want that data here.”
The point behind this plan is sovereignty. Healey is tying grid access to a set of local conditions, and he is putting money behind a unit that is meant to keep strategic AI work in British hands. The covenant is the practical half of that argument. Sites that stay, invest locally and protect water get a faster path to power. Sites that do not meet the tests do not.
The Government unveiled the covenant in the Budget. Operators that commit to local investment, jobs and water get faster grid connections.
What Does the Speech Leave Out?
The Chancellor’s speech gives no thresholds for the covenant’s tests, no start date and no megawatt figures. Healey called them strict tests but did not describe them.
It also does not define which data centres count as critical. The speech does not say how on-site generation would be permitted or for how long.
Opposition to data centres is something we have been mapping on the site. This month, Microsoft pulled out of an Nscale project in Loughton after the grid connection was pushed into the 2030s. Other countries have also taken different routes on grid access. Denmark’s bill L 23 puts data centres last in the queue. In Finland, the government has ordered Google to pause preparatory work at two sites after trees were cleared before environmental assessments were finished.
How Much Money Backs the Sovereignty Push?
A first-of-its-kind sovereign AI unit gets another £140 million, Healey said, and it channels government investment into strategic British AI firms. He said the Budget also adds half a billion pounds for AI safety and security.
Healey also announced £18 million for chip design research led by Edinburgh University and £6 million for Glasgow’s Scottish Event Campus. An AI Challenge Prize for public-service uses of AI and a union learning plan came with them.
The covenant’s thresholds, start date and definition of critical are still to come. The Chancellor’s speech does not give them. Until those details arrive, the sovereignty claim rests on the direction of travel rather than on a number that can be checked.
Author: Grace Sharp
See Also:
Microsoft Pulls Out of Nscale’s Loughton Site as IPO Nears
Who Is Fighting Data Centres in the UK? The 2026 Opposition Map
