From Shoreditch Garage to Scale-Up Glory: How One Founder Built London's Next Climate Tech Unicorn

When Priya Mehta converted a Victorian warehouse on Curtain Road into a working laboratory three years ago, few in Shoreditch's crowded startup scene paid attention. Today, her company Aerogen has secured £47 million in Series B funding and is valued at £380 million—making it one of London's fastest-growing cleantech firms and a rare bright spot in a venture capital market that has tightened considerably since 2024.

Aerogen develops industrial carbon capture technology targeting cement and steel manufacturers across Europe. The company now employs 120 people across its Shoreditch headquarters and a new R&D facility in Stratford, where the Queen Elizabeth Olympic Park's proximity to transport links and talent pools has proven instrumental. What sets Mehta apart, colleagues say, is her refusal to chase Silicon Valley's playbook. Instead, she has built something distinctly rooted in London's gritty pragmatism.

"The old adage about London innovation being slower is nonsense," Mehta has said in recent interviews. Her approach—recruiting heavily from UCL and Imperial College, partnering with established industrialists, and maintaining headquarters in a neighbourhood where rent remains (relatively) manageable—reflects a maturity often missing from tech's younger cohorts.

The numbers bear this out. Aerogen's customer base now spans 14 European sites, with major contracts signed in the past eighteen months. More tellingly, the company recently became one of the first climate tech startups to achieve profitability on operations, even as it scales manufacturing capacity.

London's innovation district—stretching from Old Street roundabout through Hoxton and down towards Stratford—has weathered considerable headwinds. Commercial rents on City Road have softened to around £45 per square foot, compared to £65 five years ago. Yet entrepreneurs like Mehta argue this creates opportunity rather than catastrophe. "We're attracting founders who are serious about building, not chasing hype," she has noted.

The city's startup ecosystem counted 5,847 active companies as of early 2026, according to the Centre for Entrepreneurs, with cleantech and biotech leading growth sectors. Aerogen exemplifies a broader shift: away from consumer-facing apps and toward deep-tech solving genuine infrastructure challenges. Its success has already attracted scrutiny from larger industrial conglomerates—and from other founders studying how to replicate the formula.

For London's business community, watching a genuinely British-born, London-built company approach scale-up status without relocating to Amsterdam or San Francisco feels like vindication. The capital's innovation story, it seems, is far from over.

This article was compiled by AI from the sources linked above and screened before publishing. See our editorial standards.