The Great British Startup: 30 Founders Under 30 Who Are Changing Everything

Every year, The Great British News compiles its definitive list of Britain's most exciting entrepreneurs under 30. This year's cohort is arguably the most impressive we have ever assembled — a group that combines exceptional technical ability with genuine commercial instinct and, in many cases, a commitment to solving problems that matter.

Amara Osei, 27 — Verdant Climate

Amara Osei founded Verdant Climate at 24 with a simple thesis: that the carbon credit market was fundamentally broken, and that fixing it required satellite technology, machine learning, and a willingness to tell uncomfortable truths to the corporate buyers who depended on dubious offset schemes. Three years later, Verdant has verified over 40 million tonnes of carbon credits using its proprietary satellite monitoring system and raised £90 million in Series B funding.

Tom Keller, 25 — Proxima Defence

Tom Keller's background is in computer science and applied mathematics. His startup, Proxima Defence, builds AI systems for detecting and responding to drone threats. The company, which emerged from Keller's PhD research at Imperial College, has secured contracts with NATO members and is currently valued at over £400 million.

Isabelle Fontaine, 28 — Helix Health

Isabelle Fontaine's Helix Health has developed a continuous glucose monitoring system specifically designed for non-diabetic users — athletes, executives, and health-conscious consumers who want real-time metabolic data. The company's wearable device has attracted 200,000 subscribers and £65 million in Series A funding.

These three represent only a fraction of this year's cohort — a generation of British founders who are building companies with genuine global ambitions from day one.