Here's who’s taking the stage

Roarsome

Sector: Sustainable fashion, entertainment
Valuation: £5.25M (pre-money) | £0.38/share | EIS qualified

Roarsome is on a mission to get kids off screens and back outside, sparking adventure, imagination, and a love for the planet. Partnering with iconic names like Marvel, WWF, and Paw Patrol, Roarsome fuses storytelling, sustainability, and bold design to encourage outdoor play and eco-conscious habits.

Already stocked in Harrods and soon launching at Gatwick Airport, Roarsome has raised £850,000 via crowdfunding and snagged awards like Best UK Kidswear Brand (Draper’s). A Dragons’ Den offer from Peter Jones and now founders Ed Lewis-Pratt and Will Chapman are opening the gates to investors with a clear 10x roadmap, licensing and media extensions in sight, and exit potential via acquisition or IPO.

Iris Solar

Sector: Renewable energy, outdoor tech, hardware innovation
Valuation: £5.25M (pre-money) | £2.44/share | EIS qualified

Iris Solar Technology is set to disrupt the renewable energy space with an all in one solar tracker that delivers up to 40% greater efficiency than traditional fixed panels. Designed for simplicity and scalability, the panels are lightweight, cable-free, and offer a seamless plug-and-play experience. It’s tailor-made for off-grid adventurers, disaster relief teams, and the 685 million people still without electricity.

Led by ex-Goldman Sachs talent and seasoned clean-tech veterans, Iris Solar has a patent pending, early pre-orders, and strong momentum from a £110,000 pre-seed raise. 

Carnot Engines 

Sector: Deep tech, clean energy, industrial hardware
Valuation: £20M pre-money | £1.295/share | EIS qualified

Carnot has revolutionised the combustion engine from the ground up, leveraging cutting-edge materials and eliminating outdated cooling systems. They have achieved a 50% improvement in efficiency, offering industries such as shipping, power generation, and heavy-duty transport a game-changing reduction in fuel costs and carbon emissions. By drawing on historical thermodynamic principles and reimagining them for the modern era, Carnot Engines is pushing the boundaries of fuel efficiency and innovation.

While Carnot’s engines may cost around 50%-100% more initially, their ability to cut fuel expenses by nearly half ensures a rapid return on investment typically within a year. 

Unlike competitors modifying old designs, Carnot builds engines to seamlessly switch between traditional fuels and zero-carbon alternatives like hydrogen and ammonia. This adaptability ensures their technology remains relevant as regulations tighten and new fuel infrastructures develop, de-risking investment, and future-proofing profitability.

They’ve already secured £2M from shipping giant Mitsui O.S.K. Lines, bringing total funding to £12.5M. With pre-orders for 2,650 engines and an addressable market topping $1 trillion, Carnot’s trajectory is steep. 

Granyt 

Sector: Renewable infrastructure, Solar
Valuation: £3.5M pre-money | £1.43/share | EIS qualified

Granyt is the UK’s first end-to-end renewables platform for businesses. Their integrated model streamlines the adoption of solar, battery storage, and EV charging by combining automated system design, instant financing, pre-vetted installers, and AI-driven maintenance.

Since launching in November 2024, they have issued over £7M in commercial solar finance quotes and secured an exclusive finance partnership with PEAC Solutions (BlackRock).  Granyt operates in the £150bn+ UK commercial renewables market, with rooftop solar alone representing an £80bn untapped opportunity. If fully adopted, UK businesses could save £35bn annually on energy costs.

They’ve raised £698,633 in pre-seed funding from One Planet Capital, Zinc, Ada Ventures (Scout Fund), and several angels. The current round will fuel customer acquisition, expand their tech platform, and deepen financing capabilities.

All the founders have sat down with Sustainable Times Editorial Manager Daisy Moll on the ‘Profit Meets Purpose’ Podcast if you would like to hear more in depth stories with the founders. 

There are still some limited event tickets available to investors available on the Sustainable Times website.