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London’s 101 Fastest Growing CleanTech Startups

At Best Startup London we track over 100,000 London based startups and over 500,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and organisations we think deserve more appreciation than they are currently getting.

We’ve ranked the top 101 CleanTech companies in London. The companies, startups and institutions listed in this article are all exceptional companies, well worth a follow. We have included links to their websites, socials and CrunchBase (if you’re interested in their financials).

We selected the organisations listed in this article based on:

  • Track record
  • Executive leadership
  • Market share
  • Innovation
  • ESG rating

Our Data – We source our data from OSINT (open source intelligence) and public directories such as CrunchbaseSemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.

Top CleanTech Companies & Startups (London)


Bramble Energy

FoundersTom Mason
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Bramble Energy is an innovator energy technology company that designs and manufactures high-performance, low-cost, and fuel cell stack


Storm4

FoundersKayleigh Bottomley
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Storm4 is a specialist GreenTech recruitment marketplace, connecting organizations with the senior talent to drive their mission.


H2GO Power

FoundersEnass Abo-Hamed, Varun Gandhi
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H2GO Power develops safe and low-cost hydrogen production and storage technologies.


Entocycle

FoundersKeiran Olivares Whitaker
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Entocycle’s automated insect farm produces environmentally friendly insect protein to feed farmed animals.


Carbon Trust

FoundersUnknown
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Carbon Trust is to accelerate the move to a low carbon economy, by working with organisations to reduce carbon emissions now and develop.


Pod Point

FoundersErik Fairbairn
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We’re building the infrastructure needed for the mass adoption of electric vehicles in the UK & Europe.


Circulor

FoundersCoenraad van Deventer, Douglas Johnson-Poensgen, Veera Johnson
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Circulor uses blockchain and AI to cut the cost of traceability and due diligence in raw materials supply chains.


Puraffinity

FoundersBen Reeve, Gabriella Santosa, Henrik Hagemann
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Puraffinity develops precision materials to target chemicals, with an initial focus on PFAS in water


Arborea

FoundersJulian Melchiorri
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Arborea is industrialising photosynthesis to expand the world’s food supply


Nozama.green

FoundersAndré L. Vanyi-Robin, Daniel Garcia Perez, Trym Lyngset
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Nozama’s digital ecosystem enables companies to drive a controlled CO2 and SUP reduction strategy.


Scindo

FoundersBenjamin G. Davis, Gustaf Hemberg, Juliet Sword
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Biotechnology company


elmo

FoundersLuke Gavin, Oliver Jones
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elmo is a mobility-as-a-service platform providing all-inclusive electric car subscriptions.


envoPAP

FoundersKaushal Shah
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envoPAP is a Sustainable Materials Company utilizing green technology to provide agricultural waste with a second life.


Carbon Clean Solutions

FoundersAniruddha Sharma, Prateek Bumb
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Carbon Clean Solutions develops CO2 separation technology designed for industrial and gas treating applications.


Carnot

FoundersArchie Watts-Farmer, Francis Lempp, Nadiur Rahman
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Carnot is a developer of hydrogen engine used to reduce the fuel consumption and zero CO2 emissions.


ARROE

FoundersEoin Cooney, Niall McGuinness, PhD, Randolph Manderstam, Romain Pascal
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Cleantech SaaS reducing the environmental impact of portable electronics.


Kita

FoundersNatalia Dorfman, Paul Young, Thomas Merriman
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The world’s first carbon insurer


Be Nosy

FoundersCarina Cunha, Dorette Hibbert
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Nosy is a MedTech startup developing wearable air filter and air pollution tracking network.


Urban Electric Networks

FoundersKeith Johnston, Olivier Freeling-Wilkinson
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We’re building low impact charging infrastructure needed for the mass adoption of electric vehicles in cities and towns across the world.


Emitwise

FoundersBenjamin Peddie, Eduardo Gómez, Mauro Cozzi
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Emitwise empowers businesses to automatically measure, report, and reduce their carbon footprint in real-time.


Airex

FoundersAgnes Czako, James Wright
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Airex is a smart ventilation control that builds intelligent air ventilation units using atmospheric sensors and cloud algorithms.


Kooling

FoundersDavid Falconi, Jonas Poelmans, Jonas Poelmans
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Kooling builds technology that empowers Enterprises decarbonise their business and deliver environmental leadership.


Modularity Grid

FoundersElizabeth Nyeko
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Accelerating deployment of renewable energy assets with data and intelligence


eleXsys Energy

FoundersBevan Holcombe, Richard Romanowski
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eleXsys Energy operates as a cleantech energy company.


ReCircle

FoundersAldous Hicks, Alison Richardson
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ReCircle is a cleantech startup that develops a closed-loop domestic recycling appliances.


Ventive

FoundersTom Lipinski
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Ventive creates healthy internal environments. Pioneers of Passive Ventilation with Heat Recovery


Cambridge Clean Energy Ltd.

FoundersWilliam Bubenicek
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Revolutionizing the way energy is delivered to emerging markets. Clean-Tech firm focused on innovation and distributed energy as a service


Odqa Renewable Energy Technologies

FoundersAhmed Refaat
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Odqa Renewable Energy Technologies develop next-generation heat transport technology.


Notpla

FoundersPierre Paslier, Rodrigo García González
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Sustainable packaging made from seaweed and plants.


Greengame

FoundersCristian Parrino, Victor Tuson Palau
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Working with organisations to incentivise sustainable behaviour using automated activity detection, gamification and behavioural economics


Tempus Energy

FoundersSara Bell
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Tempus Energy is a clean-tech start-up, established to exploit a disruptive technology and business model.


JIVR

FoundersMarcin Piatkowski
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JIVR is a hassle-free commuting bike, allowing you to enjoy the benefits of cycling, without any lifestyle compromises.


Love2Laundry

FoundersNadeem Abbas
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Founded in 2014, Love2Laundry is a digital laundry and dry-cleaning delivery service.


Love Ocean

FoundersGabrielle Jennings
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Love Ocean develops ocean-friendly bathroom products in sustainable packaging.


Bluewater Bio

FoundersDaniel Ishag
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Bluewater Bio is a company providing a high performance, cost effective, proprietary wastewater treatment process called HYBACS.


Save Your Wardrobe

FoundersHasna Kourda, Mehdi Doghri
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FashionTech startup using AI to make Fashion more digital and sustainable


Recyclan

FoundersChime Okwuokenye, Molawa Adesuyi, Rob Holman
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Tech Enabled Plastic Recycling Company


Dropless

FoundersChristian Duncan, Mike Grindy
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On-demand Car, Wash, Valet & Servicing


Treeapp

FoundersGodefroy Harito, Jules Buker, Leo King Leong Ng
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Treeapp is a mobile app enabling anyone to plant a tree for free everyday in less than a minute.


PF Nexus

FoundersMike Smales, Scott Gillam
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Renewable energy & infrastructure deal origination platform


Earth Capital

FoundersStephen Lansdown
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EC is a global private equity investment manager totally focused on Sustainable Development within the climate change nexus.


Counteract

FoundersAndrew Shebbeare, Andy Bonsall, Matt Isaacs
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Counteract is combating the climate crisis through insight, investment and invention in carbon removal.


Zevero

FoundersGeorge Wade
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Carbon emission monitoring software to help businesses reach net-zero.


Redigo

FoundersUnknown
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Redigo is a sustainability platform that with use of Machine Learning allows companies to track, analyse and act on their carbon footprint.


Chrometec Capital

FoundersUnknown
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Venture Capital & Private Equity


Lumicity

FoundersTristan Fischer
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Lumicity provides end-to-end solutions for solar photovoltaic (PV) systems, including design, planning, procurement, financing, and more.


Vesta Smart Packaging

FoundersDave Carr, Tom Mowat
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Vesta Smart Packaging provides environment-friendly packaging services.


CommonVC

FoundersDhruv Boruah
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World’s first activist led impact accelerator for startups solving the world’s biggest challenges


WOXON

FoundersAchim Hoffmann
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WOXON is the climate repair company developing proprietary and scalable technology to cool down the oceans


Delve

FoundersUnknown
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Delve is a Fintech/Climate tech startup company that focuses on accelerating the transition to net zero.


WeEngage Group

FoundersUnknown
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WeEngage Engineering, Data and Leadership professionals for Cleantech, Healthtech & Salesforce companies!


Verditek

FoundersUnknown
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Verditek focused on clean technology sectors including next generation solar panel technology, liquid gas absorption.


zumocharge

FoundersJose Paris
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We charge EVs while the city sleeps


Gliide

FoundersAndrew Phillips
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100% Electric – Intelligent Chauffeur Driven Car Service


DOCK’N’LOCK

FoundersChux Okafor
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The simplest, smartest and most secure way to store and charge your scooter around town.


Nova Extraction

FoundersAlexander N, Sergey S
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Off-grid, mobile hardware for supercritical CO2 extraction


Avocet Natural Capital

FoundersUnknown
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Avocet Natural Capital makes innovative technologies for farming, renewables, and fuel without harming the environment.


Cleantech Region Impact Group Limited

FoundersLars Ling
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Supporting Climate impact companies & ecosystems. With business, financing & networks.


Axis Cleaning & Support Services

FoundersUnknown
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Axis Cleaning & Support Services offers cleaning solutions, hygiene and support services for various sectors.


Climatecars

FoundersNicko Williamson
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Climatecars is an environmentally-friendly taxi service. We provide hybrid vehicles with drivers to businesses in London


Damazein

FoundersUnknown
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Damazein is a financial service company.


SweetGen Limited

FoundersUnknown
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SweetGen Limited has cleaning dissolved organic molecules in industrial wastewater.


RiAlAiR

FoundersCorrado Accardi, Enrico Carlin
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RiAlAiR develops sustainable technology for vehicle equipment used by the marine industry.


SulNOx Group

FoundersUnknown
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SulNOx Group provides fuel conditioning process and product that increase fuel efficiencies and thus reduce emission.


Loogun

FoundersCalan Horsman, Henry Chamberlain
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The Loogun is a hand-held motorised device that cleans above and below the waterline in a toilet.


Next Step Estates

FoundersUnknown
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Next Step Estates offers bespoke services that include property management, leasing & rental services including cleaning & moving services.


Greenzest

FoundersUnknown
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Greenzest is a business cleaning firm that prioritizes environmental protection.


Prime Cleaners London

FoundersUnknown
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Prime Cleaners London is a Cleaning company operating


Lucy Cleaning Services

FoundersAnne-Marie Riley
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Lucy Cleaning Services is a Affordable Cleaning Services in London.


Tradition

FoundersUnknown
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Tradition Property Services has been providing London Office Cleaning services for over 30 years and in that time.


Syntec Projects

FoundersUnknown
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Syntec Projects is a construction company.


Star Domestic Cleaners

FoundersDylan Collins
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Star Domestic Cleaners is a small cleantech contractor located in London.


Magic Cleaners London

FoundersUnknown
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Magic Cleaners London is a cleaning company.


Clean Expert

FoundersUnknown
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Clean Expert offers various cleaning services.


Pick N Drop Drycleaners

FoundersMark Odenore
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Laundry and Dry Cleaning Service


All Clean Services

FoundersUnknown
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All Clean Services is a facilities service company that specializes in window cleaning, water fed poles, abseiling and Cherry PIckers.


Design By Sol

FoundersSolveiga Pakstaite
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Design By Sol is a design studio.


H2 Bulletin

FoundersUnknown
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News and Analysis


CoreOne

FoundersUnknown
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The world’s first connected, autonomous solar water heater.


Soil Xchange

FoundersUnknown
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Soil Xchange engages in converting contaminated waste into granular recycled aggregates for resale.


JPC

FoundersUnknown
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JPC provides premium cleaning, window cleaning, and waste management services as per the needs of the business.


Tersus Services

FoundersUnknown
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Tersus Services offers professional residential sanitation, cleaning, and catering services.


InfectProtect

FoundersUnknown
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InfectProtect provides a range of scientifically proven solutions and advice to help limit the ongoing impact of pandemics on operations.


Apollo Janitorial Supplies

FoundersUnknown
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Apollo Janitorial Supplies is an online store for mops, toiletries, toilet cleaners, bin, bags, and hygiene products for cleaning industry.


Glen’s Gutters London

FoundersUnknown
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Glen is your trusted helper when it comes to guttering in London. Gutter cleaning, lining, replacement and tons of other opportunities!


Anyclean

FoundersUnknown
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Anyclean Is a Highly Recommended Cleaning Company.


Handy Cleaners

FoundersUnknown
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Handy Cleaners specializes in a wide range of cleaning services for both residential and commercial properties.


Rug Cleaners London

FoundersUnknown
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Rug Cleaners London is a professional cleaning company


O’Donovan

FoundersUnknown
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O’Donovan is a waste management company.


Royal Carpet Cleaner

FoundersUnknown
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London Royal Carpet Cleaner is one of the most sought after cleaning services providers.


Rug Master store

FoundersUnknown
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Rugmaster is a direct Importer of all kinds of Persian, Afghan, Chinese, Indian, European, Turkish & Russian Rugs.


The World Refining Association

FoundersUnknown
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The World Refining Association facilitates knowledge sharing & nurturing of business partnerships within the oil and gas sector.


RUSTON wheb

FoundersUnknown
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RUSTON wheb is an established executive search business that is dedicated to the renewable and clean technology sectors.


London Pro Cleaning

FoundersUnknown
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London Pro Cleaning is a Domestic Cleaning Service Provider


Shiny Carpets London

FoundersUnknown
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Shiny Carpets London is a very ambitious and responsible cleaning company.


Vestax

FoundersUnknown
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Vestax delivers cleaning services for commercial and residential premises in London area.


House Clean London

FoundersUnknown
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House Clean London is a professional cleaning company that provide wide range of cleaning solutions to all customers


Top Carpet Cleaner

FoundersUnknown
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Top Carpet Cleaner is a carpet cleaning services


Enviro Waste

FoundersUnknown
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Enviro Waste specializes in waste management, office clearance, document shredding, and waste recycling.


Pure Blue Cleaning London

FoundersKayla Finch
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Pure Blue Cleaners London are on a mission to provide a better home environment, where Londoners could enjoy a healthier life.


London Mila Cleaning

FoundersUnknown
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London Mila Cleaning is a professional cleaning company based in London, United Kingdom

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