South Mimms: Plans approved for world-leading data centre

The data centre just off the M25 would be the largest in Europe. <i>(Image: DC01UK)</i>
The data centre just off the M25 would be the largest in Europe. (Image: DC01UK)
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Plans for a world-leading data centre in South Mimms have been approved following a meeting last night (January 23).

Hertsmere Borough Council’s planning committee green lit DC01UK's proposal, which will be Europe’s largest cloud and AI data centre, with up to two million square feet of space.

The scheme is set in 85 acres of grounds, on land to the north of the M25 and to the east of the South Mimms Services.

Economic projections estimate the construction value of the project at £3.75bn with a year-round generation of £21.4m in business rates once the data centre is operational in 2029.

The landscape-led scheme is set in 85 acres of grounds.The landscape-led scheme is set in 85 acres of grounds. (Image: DC01UK)

The data centre would also see the creation of 500 skilled on-site jobs during the construction phase, 200 permanent, skilled jobs once up and running and a further 13,740 indirect jobs.

The project would also include improvements to cycling and bus routes, and a Technology and Innovation Hub at the site of the former White Hart pub.

"We want to thank Hertsmere Borough Council for their open and pragmatic approach to DC01UK’s plans. They understand our ambition for both the project and the borough," said a DC01UK spokesperson.

“This approval will also solidify Hertsmere’s status as a leading region in the south east as a tech and media superhub, complementing other established, large technology-driven organisations and film studios in the area.

The data centre will create 500 skilled on-site jobs during the construction, 200 permanent roles and a further13,740 indirect jobsThe data centre will create 500 skilled on-site jobs during the construction, 200 permanent roles and a further13,740 indirect jobs (Image: DC01UK)

"Our plan will put Hertfordshire at the epicentre of the new data centre revolution, as well as creating £3.75bn for the economy during construction and almost 14,000 indirect jobs once operational."

Cllr Jeremy Newmark, leader of Hertsmere Borough Council and chair of the Hertfordshire Growth Board, said: "This is a momentous development for our borough. 

"Hertsmere has cleared the way to becoming the home of a data centre which will be integral to serving Britain with cutting-edge technology. It’ll be a piece of critical national infrastructure needed for many generations to come.

"The project, which is aligned with the council’s vision, is set to deliver hugely significant growth and economic benefits for the area, creating jobs during and after the construction phase, as well as new businesses. This news clearly reinforces Hertsmere’s status as an extremely attractive location for business and industry, with a reputation that is getting even stronger.

The project will cost an estimated £3.75bn to build.The project will cost an estimated £3.75bn to build. (Image: DC01UK)

"While outline planning permission has been granted, we will, of course, continue to listen to and engage with residents about these exciting plans as more details are firmed up. As I’ve said before, I’m sure local people will see the massive value this development could bring to our area."

Minister for telecoms, Sir Chris Bryant MP, added: "Data centres are the beating hearts of this modern age, powering the digital infrastructure that we can no longer live without.

"That is why I am thrilled to see that Hertsmere Council has granted planning permission to one of the largest data centre projects in Europe.

"Data centres like this will not only play a pivotal role in our AI Opportunities Action Plan, but drive economic growth through the creation of skilled jobs across the South East."

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