The Greenhouse Demo Day
Undaunted’s flagship event
The Greenhouse Demo Day Cohort 8
Imperial’s climate innovation community came together on 4 June 2026 to celebrate its eighth cohort of cleantech startups coming to the end of their time on our unique accelerator programme, The Greenhouse.
14 early-stage deep-tech ventures tackling climate change across energy, infrastructure, materials, biotech, and nature poured what they’ve learnt over the past 12 months into impressive pitches to investors on the iconic stage at The Royal Institution.
Watch again
Our Cohort 8 startups had a maximum of four minutes to pitch their climate innovations to investors. Scroll down to watch each pitch again, starting with the top three as voted for by our Demo Day audience!
First place
Emissiv
Second place
Change Bio
Third place
Remedium
Making carbon capture commercially viable.
AcouBatt
Listening to batteries to optimise battery formation and quality.
Bio-cm
BladeBUG
Brilliant Dyes
Forge Minerals
Plain Site
End-to-end infrastructure for resilient property insurance.
Pyri
Developing scalable and accessible early wildfire detection.
Rezylix
An AI agent that runs factories on less energy and reduces breakdowns.
Sea2Carbon
Transforms contaminated aquatic biomass into climate-positive bio-stimulants for agriculture.
UpGreen
Makes retrofitting easy, cost-effective, and stress-free via its AI-enabled platform.
Vox Aeris
A new way to clean air.
Are you an investor?
Are you an investor or innovation supporter with expertise that could help our founders thrive? If you’d like an introduction to one or more of our startups, please fill in our investor form below.
Previous Demo Day highlights
Supported by
The Greenhouse programme is funded by HSBC UK, the Inflexion Foundation, the Centre for Greening Finance and Investment and CO2RE: the Greenhouse Gas Removal Hub.
We conduct thorough due diligence to ensure that our supporters and partners are committed to reducing their environmental impact. Whilst we are aware that HSBC currently finances a number of industries that significantly contribute to greenhouse gas emissions, we know they have a strategy in place to help their customers reduce their emissions and to reduce their own – for more information please visit the HSBC Climate Strategy webpage.