Artificial Intelligence

UK AI funding climbs 360% to £7.2bn

UK artificial intelligence companies raised £7.2bn in the first half of this year, a 360% increase on the same period last year, according to new figures. The number of funding rounds barely changed, meaning individual deals have grown dramatically in size, with the five largest raises accounting for 84% of the total. London captured almost all of the capital, though Oxford, Cambridge and Edinburgh all recorded new rounds, and two new unicorns emerged from the half-year's fundraising across the sector's infrastructure, compute and research layers.

Elizabeth Jenkins-Smalley

Editor In Chief at The Executive Magazine

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UK artificial intelligence companies raised $9.6bn (£7.2bn) in the first half of this year, up 360% on the same period last year and 284% on the second half, according to data from research platform Tracxn. The number of funding rounds held steady at 69, meaning the growth came from deal size rather than deal count.

The concentration is striking. The UK’s five most-funded companies raised $8.1bn, 84% of the half-year total, with Isomorphic Labs raising $2.1bn in a Series B, Nscale $2bn in a Series C and autonomous driving firm Wayve $1.2bn in a Series D.

Infrastructure leads the way

AI infrastructure attracted the most capital at $5.4bn, followed by high-performance computing at $3.7bn and life sciences technology at $2.1bn. The pattern reflects where the technology’s costs sit: the compute layer beneath modern AI is where the largest cheques are written.

Funding increased across every stage, from $1.2bn at seed to $4.6bn at early stage and $3.8bn at late stage. Among the most active investors, Y Combinator, Entrepreneur First and 20VC Fund led seed activity, while SoftBank Vision Fund, Eclipse and Atomico were prominent at the late stage.

FluidStack, a cloud infrastructure provider, raised $842m and $830m across two separate Series A rounds during the period, underlining how capital-intensive the compute layer of the AI economy has become.

London dominates, hubs emerge

London accounted for 98% of UK AI funding in the period, a concentration that highlights both the capital’s gravitational pull and the thinness of funding elsewhere. Oxford ranked second with $103m, followed by Cambridge, Edinburgh and Milton Keynes.

For all the concentration, the half-year produced new companies of scale beyond the capital’s core. Odyssey, a world model start-up founded by Oliver Cameron and Jeff Hawke, reached unicorn status after a $310m Series B with participation from Amazon and GV. Ineffable Intelligence, led by University College London professor David Silver, raised a record $1.1bn seed round.

What the numbers mean

Acquisition activity stayed modest, with six UK AI companies bought in the half-year, though acquired companies had raised an average of $69.8m before sale, up from $52m a year earlier. Buyers are paying for substance rather than speculation.

The scale of the figures will feed a wider debate about the UK’s technology ambition. Government support programmes and sovereign AI investment vehicles have pointed at the sector all year, and the private market response is now visible in the data.

For the companies themselves, the inflow buys something priceless: time. Capital at this scale funds multi-year research programmes rather than quarter-to-quarter survival, which is where frontier work gets done.

The figures confirm that the UK remains Europe’s centre of gravity for AI capital, and that the gap between the sector’s leaders and the rest is widening. For founders outside the largest rounds, the message is that capital is abundant but increasingly selective about scale.

The half-year also produced evidence of a maturing ecosystem. Six acquisitions were recorded, with acquired companies carrying higher average prior funding and longer average runs from first cheque to exit, both signs of businesses built for substance rather than a quick sale.