The Greenhouse
Supporting ClimateTech startups from lab to traction
Some of the UK’s most ambitious ClimateTech companies started with support from The Greenhouse
Nanomox
Raised £2.4m in 2026 to scale sustainable ionic liquid platform for advanced materials and critical minerals.
Notpla
Earthshot Prize winners, raised £20m additional investment in 2024 and now rolled out across Imperial.
Carbon Cell
Raised a £1.2m pre-seed round in 2025 to scale plastic-free foam made from biochar and natural polymers.
Sequinova
Unveiled its plant-based sequins during Stella McCartney’s A/W 2025 show during Paris Fashion Week.
Lixea
Building a 25,000 tonne/year biomass processing plant producing commercial volumes of novel materials.
Puraffinity
Raised £17m in 2024 and is now scaling up its water treatment tech.
Step 1
Step 2
Get matched to a peer coaching group led by an experienced entrepreneur
Step 3
14-week Foundation Programme to test assumptions and implement best practices
Step 4
Monthly sprints and group coaching sessions led by experienced entrepreneurs
Our core programme: support available to all selected startups
Funding
Up to £20k in grant funding
Monthly sessions with investors
Space
World-class shared labs
Advice
Regular 1:1 and group coaching
Mentor feedback and support
Pro bono support from service providers
Community
Based at the Imperial Incubator in WestTech London
DeepTech hub
The Greenhouse is in WestTech London – London’s DeepTech hub at the heart of the White City Innovation District.
World-class facilities
Tap into a growing ecosystem of DeepTech startups and world-class facilities including the Royce Institute (pictured above).
Prototyping support
Get access to shared lab benches and prototyping facilities through Imperial Incubator and Advanced Hackspace (pictured above).
Thiriving community
Once startups graduate from the 12-month Greenhouse programme, support continues via our alumni programme and the Imperial Investor Network.
What our alumni say
“Notpla wouldn’t exist if we didn’t have the support of what is now Undaunted. They were the first ones to believe in us and the idea, and provided the necessary guidance and connections to start this journey.”
Rodrigo Garcia Gonzalez
Co-founder & Co-CEO, Notpla
“The Greenhouse is one of the best programmes we’ve been on. It’s supported by a well-connected ecosystem which spans into legal, recruitment and much more.”
Abiel Ma
CEO & Co-founder, Vuala
“It felt so exciting, and gave us hope that our messy, weird design “project” could be a real, tangible business. Many tech programmes are focused [mainly] on scale and growth. While that is important to The Greenhouse, they don’t question the fundamental values of your business around sustainability and eco-friendliness. The support we’ve received has played a huge part in the progress we’ve made.”
Elizabeth Lee
CEO & Co-founder, Carbon Cell
“The Greenhouse workshops, trainings and exposure were first class. The programme connected us with the biggest player in our industry, and with all the legal, IP and business services we could possibly need. The mood among the startups was really supportive, and we accelerated each others’ growth a lot by learning from each other.”
Dan Ellis
Founder, Decarbonite
The Greenhouse in numbers
180
180 startups have taken part in Undaunted’s accelerator, now known as The Greenhouse
>$1.33bn
>1,600
They operate across 30 countries worldwide, and have created over 1,600 jobs. As of September 2024 the total number of employees stands at 1,617
Our alumni will have real-world impact
29 million tonnes of cumulative carbon dioxide equivalent forecast to be saved by 2030. This equates to 7% of the UK's annual greenhouse gas emissions
76 million tonnes cumulative waste forecast to be avoided by 2030 across the Undaunted startup portfolio. This is equivalent to a third of the UK's annual waste
7.4 million litres total fresh water to be saved by 2030, equivalent to the annual consumption of 75 thousand UK households
Our current cohorts
Meet Cohort 8
Meet Cohort 9
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.