How Are AI Startups Bringing London’s Office Market Back To Life?

“OpenAI has signed for its first permanent London office, and Anthropic has confirmed it is expanding its UK headcount from 200 to 800, both heading to King’s Cross, already home to DeepMind, Google, Meta and Microsoft. This isn’t a spike. It’s a structural shift,”

This was a comment by Jules Robertson, co founder of Tally Workspace.

London’s office market spent years dealing with remote work and quieter leasing activity. AI companies are now taking substantial office space throughout Central London, especially around established tech districts.

CBRE found AI led companies accounted for 34% of all tech office leasing in Central London during 2025. That share stood at just 4% in 2015. Since 2015, AI businesses have leased around 1.5 million sq ft of office space in Central London.

CBRE also expects AI companies could take another 2.5 million sq ft before 2033. The property group said that level of leasing would equal roughly 43% of Central London’s office development pipeline currently under construction and available to let.

Robertson said activity intensified early in 2026. “Recent insights have revealed that AI companies leased more than 450,000 sq ft of London office space in April 2026 alone, compared to an average of just 40,000 sq ft across 2025.”

PitchBook data published through CBRE counted 5,177 AI companies operating in London. Around 1,531 of those companies already employ more than 50 people.

Why Has King’s Cross Turned Into An AI Hotspot?

King’s Cross now hosts many of London’s biggest tech names. Google, Meta and DeepMind already occupy offices there, while OpenAI recently confirmed its own long term London base nearby.

“King’s Cross has emerged as a high-demand hub for global tech and AI companies. With major corporations like Google and Meta already based there, and OpenAI recently announcing a new office, any new space is being snapped up almost as soon as it becomes available,” Robertson said.

Tally Workspace data ranked King’s Cross as London’s second most expensive market for serviced office desks during the second quarter of 2026. Desks averaged around £900 per month, while Mayfair averaged £954.

CBRE found transport access plays a major role in office selection. Many AI companies occupy offices near Elizabeth line stations through districts such as Old Street, Soho and Canary Wharf.

London also hosts more AI companies employing over 50 staff than San Francisco, according to PitchBook data published through CBRE. London counted 1,531 medium sized or bigger AI businesses, while San Francisco counted 1,329.

What Kind Of Offices Do AI startups Want?

Many AI startups first rent coworking desks before taking traditional offices later. CBRE reviewed 100 London based AI startups and found 75 occupied coworking office space, while only nine used standard office leases.

That leasing activity follows intense recruitment activity throughout London’s tech market. LinkedIn Talent Insights data published through CBRE found AI engineer jobs recorded yearly growth of around 52.5% in London.

“We’re also seeing a quality shift, not just a quantity one. Tech and AI companies are increasingly our fastest-growing client segment in King’s Cross, and they arrive with high expectations. On-site gyms, cafes, premium service levels. For this cohort, the workspace itself is part of the proposition they’re selling to their own talent,” Robertson said.

Office branding also has commercial value for startups competing for engineers and investment money. Robertson said, “There’s a brand dimension to this that often gets overlooked. In a sector moving as fast as AI, where credibility and talent attraction are everything, physical presence carries real weight. Where you put your name above the door matters more than ever. King’s Cross has become the address that says you’ve arrived.”

OpenAI first operated from coworking offices at Fora in King’s Cross before signing for nearly 100,000 sq ft at Jahn Court. Synthesia later acquired 19,500 sq ft at 20 Triton Street, while Quantexa secured roughly 52,300 sq ft for its headquarters at The Delft.

Can London Keep Attracting AI Companies?

Investment money continues flowing into London’s tech sector. CBRE reported venture capital investment into London tech companies exceeded $313 billion between 2023 and 2025, making London Europe’s largest tech investment market.

Dealroom data published through CBRE found 67% of all UK AI startup funding rounds in 2025 took place in London. The city also hosts 42 unicorn companies and more than 11,500 startups.

Government spending has also supported tech expansion within the UK. CBRE referenced the recently announced £2.5 billion government funding package for AI and quantum technology projects.

Robertson believes many startups may eventually examine nearby districts where rents are lower but transport access stays efficient. “The firms that navigate this most effectively will be those thinking not just about where they want to be, but what they actually need from their space, and whether adjacent areas like Euston, Bloomsbury or Farringdon could offer the same talent access at a meaningfully lower cost.”

She also said London’s AI reputation now attracts companies from around the world. “London is cementing itself as the AI capital of Europe. The question for fast-growing firms isn’t whether to be here. It’s where, and at what cost.”