51³Ô¹ÏÍø

Undaunted welcomes 14 cutting-edge innovators onto its 12-month climate accelerator to get investor-ready and boost their commercial success.

provides early-stage DeepTech, FinTech, CleanTech startups with a unique 12-month programme of accelerator support, including up to £20,000 equity-free grant funding, access to 51³Ô¹ÏÍø’s world-class facilities, expertise and networks, and expert coaching, industry mentorship and workshops. ’s flagship activity, the programme is based at  within London’s . 

The 14 diverse and talented startups selected for Cohort 8 came through a tough application process… a strong pipeline of innovations across carbon capture, alternative materials, biotech, climate finance, and beyond. Maiko Schaffrath Head of The Greenhouse, Undaunted

“The 14 diverse and talented startups selected for Cohort 8 came through a tough application process – it’s fantastic to welcome them into the Undaunted community,” says Maiko Schaffrath, Head of The Greenhouse. “It’s really encouraging to see applications for this programme increase with each Cohort – up 80% compared to our last call. This highlights a strong pipeline of innovations across carbon capture, alternative materials, biotech, climate finance, and beyond. With input from both technical and commercial experts, our rigorous selection process resulted in an acceptance rate of under 10%.” 

“The programme wouldn’t be possible without our funders,” Maiko continues. “Their support is vital in enabling us to nurture the most exciting climate innovators of tomorrow, whose tech has the potential to scale, gain significant investment and, most importantly, have a real impact on adapting to, and mitigating the effects of, climate change,” he continued. 

The Greenhouse is supported by HSBC UK and the Inflexion Foundation. It is working in partnership with the Mayor of London.

“It’s exciting to see motivated, passionate and talented early-stage startups using their skills to support the transition to net-zero and enable a greener future – and how valuable a programme like The Greenhouse is in their journey,” says Natalie Gregoire-Skeete, Head of Social Purpose and Head of Sustainability at HSBC UK. “Developing a startup and scaling a product is incredibly challenging, and we can see the value that Undaunted’s community provides in supporting founders to grow, innovate and create the businesses and jobs of the future mitigate the effects of climate change. We look forward to seeing Cohort 8 thrive.”

A thriving network of support 

The Greenhouse journey leads up to , when the founders pour the expertise and skills they've honed into impressive pitches to investors at , with the aim of raising minimum £100k investment – enough to secure them for a further 12 months. Once graduated from the programme, they join a thriving community of and benefit from continued networking and support as they continue to grow.  

Alumni include , winners of a 2022 £1m Earthshot Prize, who recently announced a £20m funding round to bring its seaweed-based packaging to the US market; , who just landed  to predict battery performance; , who have raised £1.2m to scale its low carbon foam material;  who secured £17m investment to scale up water treatment technology; who to deploy limestone-based direct air capture technology and who, in 2023, raised £7.9m to support R&D on growth media for cultivated meat and the transition to manufacturing its first commercial products. 

Meet Cohort 8 

AcouBatt  

AcouBatt listen to batteries to optimise formation protocol and quality control. 

Bio Construction Materials 

transforms agricultural by-products into insulation boards for building systems. . 

BladeBUG 

is making wind energy safer and more efficient using its robotic platform for remote, automated wind turbine blade inspection and repair. . 

Brilliant Dyes 

 is developing sustainable and continuous extraction of natural RGB dyes from algae for high-end textiles, cosmetics and organic food industries. . 

Change Bio 

is solving the recombinant protein manufacturing problem, getting innovative proteins to market faster. . 

Emissiv 

is pioneering transparent radiative cooling coatings for energy-free cooling across industries. . 

Forge Minerals 

turns carbon dioxide into high value, carbon negative minerals. . 

Openstead 

is translating underused urban space into assets of climate resilience. . 

Pyri 

is developing scalable and accessible early wildfire detection. . 

Remedium Energy 

is making carbon capture commercially viable. . 

Rezylix 

engineers autonomous systems that monitor, protect, and regenerate controlled agricultural environments — empowering growers to build more resilient, adaptive, and productive operations. . 

Sea2Carbon 

transforms invasive seaweed into climate-positive bio-stimulants for agriculture, biocoke for the steel industry, and clean water for communities through its modular reactor system – empowering low-income coastal regions, including Small Island Developing States. . 

UpGreen 

makes retrofitting easy, cost-effective, and stress-free for property owners, tenants, and installers via its AI-enabled platform. . 

Vox Aeris 

builds advanced air technologies that make clean air more energy-efficient and accessible in buildings and transport systems. . 

Could you be part of the next Greenhouse cohort?

Applications for The Greenhouse Cohort 9 are set to open in September 2025:  to stay in-the-loop on this opportunity, and also the imminent official launch of EarthScale, a new £5m collaboration to scale UK climate startups.

Find your place in our innovation community 

is a hub for the UK’s climate innovation community, creating new routes into green entrepreneurship and supporting the acceleration of startups and SMEs tackling the effects of climate change. It is a partnership between the  and the Grantham Institute - Climate Change and the Environment at 51³Ô¹ÏÍø.  

Our funders 

The Greenhouse programme is supported by HSBC UK and the . It is working in partnership with the .

Openstead is sponsored on The Greenhouse by the (CGFI): a national centre established to accelerate the adoption and use of climate and environmental data and analytics by financial institutions internationally.

Forge, Remedium Energy and Sea2Carbon are sponsored on The Greenhouse by , the UK’s national research hub on Greenhouse Gas Removal (GGR) that conducts research on GGR, co-ordinates demonstration projects around the UK, connects to other national and international programmes and commissions grants through a flexible fund.