Can the UK data centre sector keep up with the demand for AI?

The global data centre market is expanding rapidly, driven by cloud growth, digital transformation and the accelerating demand of AI. Valued at around US$350 to 450 billion today, the sector is growing at 10 to 15% annually. The UK is a major player in that growth story, representing approximately 4 to 5% of global market value and 5 to 7% of installed capacity, with a market worth US$15 to 17 billion and growing faster than the global average. 

As Europe’s largest data centre market and a key global hub for hyperscale and AI infrastructure, the UK has no shortage of demand or investor appetite. Its growing challenge is turning that ambition into delivered capacity. The question now facing the industry is simple: can the UK build fast enough to meet what AI demands? 

That was the central question put to a room of operators, engineers, architects and project managers at a recent roundtable hosted by SES Technology, and chaired by Andy Davis of DataX Connect: can the industry in the UK deliver the capacity that AI now demands? With attendees from Ridge and Partners, AVK, Hoare Lea, studioNWA, CUDO Compute and CyrusOne, the roundtable brought together key minds from the data centre sector.  

“The UK data centre market sits at a critical point,” says Eddie Tribe, Managing Director of SES Technology, who hosted the discussion. “Demand continues to accelerate, driven by cloud expansion and the rapid emergence of AI workloads. However, despite these pressures, funding remains available and global investor sentiment is broadly positive.” 

That’s the paradox at the heart of the UK market right now. Investors are enthusiastic to get involved, and demand is not slowing down. But the industry’s ability to turn ambition into operational capacity is being tested from almost every angle – power, planning, supply chains and skills all at once. 

Two figures from the roundtable put the scale of the challenge into perspective. UK grid connection queues currently hold roughly 126GW of demand – about four times the country’s national base load. Yet only 7% of tracked UK data centre projects announced since 2022 have been built or are under construction, compared with 46% in Germany. 

In other words, the UK isn’t short on ambition or investor appetite. It’s short on the ability to convert announcements into steel, power and racks. Vacancy rates across existing facilities remain low, a signal that underlying demand hasn’t softened – it’s simply backing up behind a bottleneck. 

Power is the first constraint, but not the only one. Grid connection delays dominated the roundtable’s discussion, alongside high UK energy costs and a persistent mismatch between where power is available and where demand is growing. Participants noted that regulation often makes it harder to deploy short-term energy solutions that could bridge the gap while grid upgrades catch up. 

Small Modular Reactors came up as a potential long-term fix, but the consensus among participants was that SMRs are unlikely to make an impact before the late 2030s. That’s a significant timeline when compared with AI workload growth, which is measured in months rather than decades. 

Further down the delivery chain, the roundtable flagged shortages of key electrical components, long manufacturing lead times, and limited capacity for MEP fit out and commissioning. Equally as vital, there is a shortage of experienced designers, commissioning engineers, and trades, compounded by high staff turnover and a lack of structured training pathways into the sector. Building the centres is one problem; staffing the people who can commission them is another. 

London remains the UK’s dominant data centre hub, and its position as a global connectivity centre is a genuine strength. But the roundtable’s view was that future growth increasingly has to look elsewhere. The Midlands, the North of England and Scotland offer more available land and better access to power, yet investment continues to concentrate on London, intensifying the very capacity pressures the region cannot sustain. 

The UK still has great appeal for data centre growth. Investor interest, technical expertise and London’s connectivity all remain real advantages. But the roundtable was equally clear about the risk sitting underneath that optimism. If grid delivery doesn’t speed up, if planning doesn’t get faster, and if government, regulators and industry don’t start working more closely together, capital that currently wants to land in the UK will start looking to markets that can move faster and deliver projects more quickly and cost-effectively. 

Germany’s 46% delivery rate against the UK’s 7% isn’t just a statistic – it’s a preview of where investment could migrate if the UK’s execution gap doesn’t close. 

The roundtable’s message is that the UK has the demand, the capital, and the expertise to lead – but leadership now depends on execution, not ambition. Closing the gap between announced projects and delivered capacity will require faster grid connections, smarter regional investment, deeper focus on skills, and closer co-ordination between government and industry.