Entrepreneur UK’s London 100: DeltaH Innovations

DeltaH cracked the self-cooling can—redefining drinks with on-demand chilling and zero waste

By Patricia Cullen | Jun 05, 2025
DeltaH Innovations
DeltaH Innovations founder, James Vyse

Opinions expressed by Entrepreneur contributors are their own.

You're reading Entrepreneur United Kingdom, an international franchise of Entrepreneur Media.

Industry: Food and Beverage
For decades, the world’s biggest beverage brands, Coca-Cola, Carlsberg, and Heineken have poured millions into achieving the impossible: a self-cooling can. They all failed. But one man, a former mixologist turned entrepreneur, cracked the code, not in a high-tech lab, but in his bedroom.

Introducing James Vyse: the underdog who refused to accept “impossible” and a worthy number on the Entrepreneur UK London100 list. With no formal engineering background or corporate funding, James dedicated nights and weekends to experimentation. His first few prototypes failed. So did the next fifty. But after 500+ iterations, he cracked it: a revolutionary mechanism capable of chilling a beverage from room temperature to ice-cold in under two minutes at the push of a button.

DeltaH Innovations, founded by Vyse, is a disruptive force in the beverage industry, and by reimagining how drinks are chilled, it is pioneering a new era of sustainability and convenience. Beverage refrigeration accounts for 17% of the world’s electricity consumption. The Cool Can eliminates the need for energy-draining fridges, making it the first-ever on-demand cooling solution for the drink industry.

From festivals and outdoor adventures to high-end mixology, the Cool Can is set to revolutionise drinking culture.

Industry: Food and Beverage
For decades, the world’s biggest beverage brands, Coca-Cola, Carlsberg, and Heineken have poured millions into achieving the impossible: a self-cooling can. They all failed. But one man, a former mixologist turned entrepreneur, cracked the code, not in a high-tech lab, but in his bedroom.

Introducing James Vyse: the underdog who refused to accept “impossible” and a worthy number on the Entrepreneur UK London100 list. With no formal engineering background or corporate funding, James dedicated nights and weekends to experimentation. His first few prototypes failed. So did the next fifty. But after 500+ iterations, he cracked it: a revolutionary mechanism capable of chilling a beverage from room temperature to ice-cold in under two minutes at the push of a button.

DeltaH Innovations, founded by Vyse, is a disruptive force in the beverage industry, and by reimagining how drinks are chilled, it is pioneering a new era of sustainability and convenience. Beverage refrigeration accounts for 17% of the world’s electricity consumption. The Cool Can eliminates the need for energy-draining fridges, making it the first-ever on-demand cooling solution for the drink industry.

From festivals and outdoor adventures to high-end mixology, the Cool Can is set to revolutionise drinking culture.

Related Content

Entrepreneurs

UK100 Start-Ups: Yotewo

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. Yotewo is an AI-curated talent marketplace that makes hiring engineers […]
Entrepreneurs

UK100 Start-Ups: YEO Messaging

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. YEO Messaging is redefining secure communication with patented facial recognition, […]
Entrepreneurs

UK100 Start-Ups: Win-Win

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. Win-Win is tackling the cocoa crisis head- on with its […]
Entrepreneurs

UK100 Start-Ups: Wheely

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. Luxury services company Wheely operates in London, Paris and Dubai. […]
Entrepreneurs

UK100 Start-Ups: Water2

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. Co-founded by Bear Gryll, Water2 brings cultural credibility and serious […]
Entrepreneurs

UK100 Start-Ups: Waggel

This article is part of The UK100 Start-Ups, a special edition by Entrepreneur UK showcasing the most exciting startups redefining business in 2026. From climate and health to AI and creativity, these innovators are tackling big challenges—while racing to scale, secure funding, and attract top talent. Waggel is redefining pet protection, merging coverage with care. AI-powered […]