Top list · United Kingdom
Climate Tech startups in the United Kingdom
111 climate Tech startups in the United Kingdom have raised money in rounds we track. These are the 50 that have raised the most, $3.4B between them, with London the most common home.
- 1
RSK GroupRSK Group is a privately-owned multi-disciplinary environmental consultancy and one of the fastest growing companies.RSK Group is a privately-owned multi-disciplinary environmental consultancy and one of the fastest growing companies.
Founded 1989Helsby, United Kingdom$705Mlast round Sept 2024 - 2
Atome EnergyAtome Energy is the green hydrogen and ammonia project development company to create a greener, cleaner environment.Atome Energy is the green hydrogen and ammonia project development company to create a greener, cleaner environment.
Founded -Leeds, United Kingdom$665Mlast round Apr 2026 - 3
Nexus ReGenNexus ReGen is a UK-based digital materials management platform designed for the construction industry.Nexus ReGen is a UK-based digital materials management platform designed for the construction industry.
Founded 2023Crawley, United Kingdom$254Mlast round May 2026 - 4
EVCEVC's core focus is on providing convenient, practical and reliable 'destination' charging options for its growing customer baseEVC's core focus is on providing convenient, practical and reliable 'destination' charging options for its growing customer base
Founded 2020United Kingdom$199Mlast round Feb 2023 - 5Just ClimateFounded 2021United Kingdom$175Mlast round Mar 2025
- 6
Breathe Battery TechnologiesBreathe Battery Technologies is a developer of electric vehicle battery charging control software for automotive manufacturers.Breathe Battery Technologies is a developer of electric vehicle battery charging control software for automotive manufacturers.
Founded 2019United Kingdom$132Mlast round Aug 2026 - 7
A-GasA-Gas is a producer of industrial gases and specialized chemicals.A-Gas is a producer of industrial gases and specialized chemicals.
Founded 1993Portishead, United Kingdom$116Mlast round Apr 2011 - 8
NotplaNotpla is a London-based sustainable packaging startup founded in 2014 by Rodrigo García González and Pierre Paslier.Notpla is a London-based sustainable packaging startup founded in 2014 by Rodrigo García González and Pierre Paslier.
Founded 2014London, United Kingdom$89Mlast round Jul 2026 - 9
NattergalNattergal operates as a nature restoration company.Nattergal operates as a nature restoration company.
Founded -Grantham, United Kingdom$73Mlast round Oct 2024 - 10
ConvergeConstruction Technology.Construction Technology.
Founded 2014London, United Kingdom$69Mlast round May 2025 - 11
SLR ConsultingSLR is an environmental consultancy that provides advice and support on a wide range of strategic and site-specific environmental issues.SLR is an environmental consultancy that provides advice and support on a wide range of strategic and site-specific environmental issues.
Founded 1994Aylesbury, United Kingdom$64Mlast round Jun 2008 - 12
Epoch BiodesignEpoch Biodesign is a London-based synthetic biology company founded in 2019.Epoch Biodesign is a London-based synthetic biology company founded in 2019.
Founded 2019London, United Kingdom$59Mlast round Mar 2026 - 13
UndoUndo is the time travel debugging company for Linux.Undo is the time travel debugging company for Linux.
Founded 2012Cambridge, United Kingdom$57Mlast round Jun 2026 - 14ARC RideFounded -United Kingdom$57Mlast round Sept 2026
- 15
IsometricIsometric is a London-based certification platform focused on the industrial economy, specializing in carbon removal registry and science services.Isometric is a London-based certification platform focused on the industrial economy, specializing in carbon removal registry and science services.
Founded 2022London, United Kingdom$50Mlast round Sept 2026 - 16RivanFounded 2026United Kingdom$47Mlast round Apr 2026
- 17
NatureMetricsNatureMetrics is a global environmental technology company that offers a subscription service for biodiversity monitoring and nature impact reporting, utilizingNatureMetrics is a global environmental technology company that offers a subscription service for biodiversity monitoring and nature impact reporting, utilizing
Founded 2014Egham, United Kingdom$47Mlast round Jun 2026 - 18
RayloRaylo is a UK-based technology subscription and leasing platform that promotes a circular economy for consumer electronics.Raylo is a UK-based technology subscription and leasing platform that promotes a circular economy for consumer electronics.
Founded 2019London, United Kingdom$42Mlast round Jan 2026 - 19
Bluewater BioThe UK's fastest growing Water Company, Bluewater Bio is an award-winning specialist in the cost effective treatment of water and wastewater.The UK's fastest growing Water Company, Bluewater Bio is an award-winning specialist in the cost effective treatment of water and wastewater.
Founded 2007London, United Kingdom$38Mlast round Dec 2021 - 20
Mission ZeroMission Zero helps real estate facilities and their portfolio companies improve their ESG performance by eliminating waste from cafeteria and catering operationMission Zero helps real estate facilities and their portfolio companies improve their ESG performance by eliminating waste from cafeteria and catering operation
Founded 2022Houston, United Kingdom$28Mlast round Aug 2025 - 21
GreyparrotGreyparrot is a London-based company founded in 2019 that specializes in AI-driven waste intelligence.Greyparrot is a London-based company founded in 2019 that specializes in AI-driven waste intelligence.
Founded 2019London, United Kingdom$27Mlast round Jul 2026 - 22AltiliumFounded 2022United Kingdom$25Mlast round Apr 2026
- 23
Longevity PartnersLongevity Partners is a global sustainability consultancy founded in 2015, based in London.Longevity Partners is a global sustainability consultancy founded in 2015, based in London.
Founded 2015London, United Kingdom$24Mlast round Nov 2025 - 24
BarocalBarocal is a Cambridge University spin-out founded in 2019, focused on developing solid-state cooling and heating technologies.Barocal is a Cambridge University spin-out founded in 2019, focused on developing solid-state cooling and heating technologies.
Founded 2019Cambridge, United Kingdom$23Mlast round May 2026 - 25WrenFounded -United Kingdom$21Mlast round Jul 2022
- 26
PollinationPollination is a global climate change investment and advisory firm based in London, United Kingdom.Pollination is a global climate change investment and advisory firm based in London, United Kingdom.
Founded 2019London, United Kingdom$20Mlast round Nov 2024 - 27
Atmospheric AIAtmospheric AI is a London-based B2B software company that specializes in creating an AI-first platform for developing a dynamic digital twin of the raw materiaAtmospheric AI is a London-based B2B software company that specializes in creating an AI-first platform for developing a dynamic digital twin of the raw materia
Founded 2025London, United Kingdom$20Mlast round Nov 2026 - 28
SafiSustainable clothing start-up brand inspired by vintage trends with a modern twistSustainable clothing start-up brand inspired by vintage trends with a modern twist
Founded 2018United Kingdom$20Mlast round Nov 2023 - 29
NuadaWe help hard-to-abate industries to decarbonise by vacuuming CO2 out of flue gasWe help hard-to-abate industries to decarbonise by vacuuming CO2 out of flue gas
Founded 2012Newtownabbey, United Kingdom$19Mlast round Oct 2026 - 30
GridcogGridcog is a B2B SaaS energy technology company based in London, United Kingdom, founded in 2020.Gridcog is a B2B SaaS energy technology company based in London, United Kingdom, founded in 2020.
Founded 2020London, United Kingdom$18Mlast round Jul 2026 - 31
Arvia TechnologyArvia Technology is a UK-based company founded in 2007, specializing in industrial wastewater treatment.Arvia Technology is a UK-based company founded in 2007, specializing in industrial wastewater treatment.
Founded 2007Runcorn, United Kingdom$16Mlast round Apr 2015 - 32
AdaptavateAdaptavate is focussing on developing and commercialising material solutions that disrupt the conventional construction industry.Adaptavate is focussing on developing and commercialising material solutions that disrupt the conventional construction industry.
Founded 2014Stonehouse, United Kingdom$15Mlast round Oct 2026 - 33
SupercriticalSupercritical Tech Ltd., based in London, is a carbon removal marketplace founded in 2021.Supercritical Tech Ltd., based in London, is a carbon removal marketplace founded in 2021.
Founded -London, United Kingdom$13Mlast round May 2026 - 34
Extentia GroupExtentia Group was a built environment specialist group that operated in the UK and Ireland.Extentia Group was a built environment specialist group that operated in the UK and Ireland.
Founded 2018Sale, United Kingdom$13Mlast round Jun 2019 - 35
Brilliant PlanetBrilliant Planet is a climate technology company based in London, founded in 2013.Brilliant Planet is a climate technology company based in London, founded in 2013.
Founded 2013Harpenden, United Kingdom$12Mlast round Apr 2022 - 36
Highlands RewildingHighlands Rewilding's goal is to promote natural recovery and community prosperity through rewilding.Highlands Rewilding's goal is to promote natural recovery and community prosperity through rewilding.
Founded 2020United Kingdom$11Mlast round May 2023 - 37
Rhizocore TechnologiesRhizocore Technologies Ltd is a UK-based ecological innovation and biotechnology company focused on mycorrhizal fungi products.Rhizocore Technologies Ltd is a UK-based ecological innovation and biotechnology company focused on mycorrhizal fungi products.
Founded 2021Edinburgh, United Kingdom$11Mlast round Nov 2025 - 38
ConcreteneConcretene is a concrete alternative that is designed to provide a viable CO2 reduction technology in the construction industry.
Concretene is a concrete alternative that is designed to provide a viable CO2 reduction technology in the construction industry.
Founded 2020Manchester, United Kingdom$9.9Mlast round Oct 2026 - 39
Total Recycling ServicesTotal Recycling Services is a waste management and recycling company located in Darlington, England.Total Recycling Services is a waste management and recycling company located in Darlington, England.
Founded 2009Darlington, United Kingdom$9.7Mlast round Feb 2016 - 40
WASEWASE is a UK-based climate technology and environmental services company located in Bristol.WASE is a UK-based climate technology and environmental services company located in Bristol.
Founded 2017Bristol, United Kingdom$9.4Mlast round Mar 2024 - 41
Rainforest BuilderRainforest Builder is a Nature Tech company dedicated to the restoration of tropical forests on a large scale.Rainforest Builder is a Nature Tech company dedicated to the restoration of tropical forests on a large scale.
Founded 2022London, United Kingdom$9.1Mlast round Dec 2025 - 42
Earth BloxEarth Blox is an environmental intelligence company based in Edinburgh, Scotland, founded in 2019.Earth Blox is an environmental intelligence company based in Edinburgh, Scotland, founded in 2019.
Founded 2019Edinburgh, United Kingdom$8.0Mlast round Mar 2026 - 43
Greenback Recycling TechnologiesGreenback Recycling Technologies is a UK-based advanced recycling company founded in 2018.Greenback Recycling Technologies is a UK-based advanced recycling company founded in 2018.
Founded 2019London, United Kingdom$7.8Mlast round Apr 2022 - 44
Metris EnergyMetris Energy is the first AI-powered solar energy platform for commercial property owners.Metris Energy is the first AI-powered solar energy platform for commercial property owners.
Founded 2023London, United Kingdom$7.5Mlast round Sept 2026 - 45
CervestCervest is cloud-based provider of AI-powered Climate Intelligence that helps organizations manage and adapt to asset-level risk globally.Cervest is cloud-based provider of AI-powered Climate Intelligence that helps organizations manage and adapt to asset-level risk globally.
Founded 2016Barcelona, United Kingdom$7.2Mlast round Apr 2023 - 46
Renew RiskRenew Risk is a London-based InsurTech and FinTech company founded in 2021.Renew Risk is a London-based InsurTech and FinTech company founded in 2021.
Founded 2021London, United Kingdom$7.1Mlast round Feb 2025 - 47
Springfield HealthcareSpringfield Healthcare delivers personal and domestic care for people who need it in their own homes.Springfield Healthcare delivers personal and domestic care for people who need it in their own homes.
Founded 1967United Kingdom$6.9Mlast round Jun 2012 - 48EvoveCreates next-generation software solutions for multiple platforms.
Creates next-generation software solutions for multiple platforms.
Founded 2012United Kingdom$6.9Mlast round Mar 2023 - 49
BioomixBioomix is a biotechnology company that develops all-natural microbial products that can help farmers achieve a higher and better yield.Bioomix is a biotechnology company that develops all-natural microbial products that can help farmers achieve a higher and better yield.
Founded -Odense, United Kingdom$6.7Mlast round Oct 2023 - 50
Connect EarthConnect Earth is a London-based environmental data and climate fintech company founded in September 2021.Connect Earth is a London-based environmental data and climate fintech company founded in September 2021.
Founded 2021London, United Kingdom$6.5Mlast round Dec 2025
Helsby, United KingdomCompanies whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.
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VGCFSClimate Tech startups in the United States270 companies · $27BVGSCFClimate Tech startups that raised in 2026195 companies · $20B in 2026
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SCClimate Tech startups founded in 202176 companies · $3.0B
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MClimate Tech startups founded in 202269 companies · $2.0B
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SClimate Tech startups founded in 201966 companies · $2.1B
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LEClimate Tech startups founded in 202064 companies · $2.7BVGSCFClimate Tech startups in the United States that raised in 202662 companies · $17B in 2026
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NClimate Tech startups founded in 201848 companies · $1.4BMore lists for United Kingdom
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FStartups in the United Kingdom8,355 companies · $79B
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ONHealth startups in the United Kingdom1,094 companies · $17BN
AAILAI startups in the United Kingdom835 companies · $32B
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KIT Services startups in the United Kingdom816 companies · $5.3BILCSONHealthcare startups in the United Kingdom608 companies · $14BILCSONBiotech startups in the United Kingdom588 companies · $15BF
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RFinancial Services startups in the United Kingdom472 companies · $26BFCR
CFintech startups in the United Kingdom342 companies · $23B