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 Crunchbase, SemRush 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

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

Storm4

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

H2GO Power

H2GO Power develops safe and low-cost hydrogen production and storage technologies.

Entocycle

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

Carbon Trust

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

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

Circulor

Circulor uses blockchain and AI to cut the cost of traceability and due diligence in raw materials supply chains.

Puraffinity

Puraffinity develops precision materials to target chemicals, with an initial focus on PFAS in water

Arborea

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

Nozama.green

Nozama’s digital ecosystem enables companies to drive a controlled CO2 and SUP reduction strategy.

Scindo

Biotechnology company

elmo

elmo is a mobility-as-a-service platform providing all-inclusive electric car subscriptions.

envoPAP

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

Carbon Clean Solutions

Carbon Clean Solutions develops CO2 separation technology designed for industrial and gas treating applications.

Carnot

Carnot is a developer of hydrogen engine used to reduce the fuel consumption and zero CO2 emissions.

ARROE

Cleantech SaaS reducing the environmental impact of portable electronics.

Kita

The world’s first carbon insurer

Be Nosy

Nosy is a MedTech startup developing wearable air filter and air pollution tracking network.

Urban Electric Networks

We’re building low impact charging infrastructure needed for the mass adoption of electric vehicles in cities and towns across the world.

Emitwise

Emitwise empowers businesses to automatically measure, report, and reduce their carbon footprint in real-time.

Airex

Airex is a smart ventilation control that builds intelligent air ventilation units using atmospheric sensors and cloud algorithms.

Kooling

Kooling builds technology that empowers Enterprises decarbonise their business and deliver environmental leadership.

Modularity Grid

Accelerating deployment of renewable energy assets with data and intelligence

eleXsys Energy

eleXsys Energy operates as a cleantech energy company.

ReCircle

ReCircle is a cleantech startup that develops a closed-loop domestic recycling appliances.

Ventive

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

Cambridge Clean Energy Ltd.

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

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

Notpla

Sustainable packaging made from seaweed and plants.

Greengame

Working with organisations to incentivise sustainable behaviour using automated activity detection, gamification and behavioural economics

Tempus Energy

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

JIVR

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

Love2Laundry

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

Love Ocean

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

Bluewater Bio

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

Save Your Wardrobe

FashionTech startup using AI to make Fashion more digital and sustainable

Recyclan

Tech Enabled Plastic Recycling Company

Dropless

On-demand Car, Wash, Valet & Servicing

Treeapp

Treeapp is a mobile app enabling anyone to plant a tree for free everyday in less than a minute.

PF Nexus

Renewable energy & infrastructure deal origination platform

Earth Capital

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

Counteract

Counteract is combating the climate crisis through insight, investment and invention in carbon removal.

Zevero

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

Redigo

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

Chrometec Capital

Venture Capital & Private Equity

Lumicity

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

Vesta Smart Packaging

Vesta Smart Packaging provides environment-friendly packaging services.

CommonVC

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

WOXON

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

Delve

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

WeEngage Group

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

Verditek

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

zumocharge

We charge EVs while the city sleeps

Gliide

100% Electric – Intelligent Chauffeur Driven Car Service

DOCK’N’LOCK

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

Nova Extraction

Off-grid, mobile hardware for supercritical CO2 extraction

Avocet Natural Capital

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

Cleantech Region Impact Group Limited

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

Axis Cleaning & Support Services

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

Climatecars

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

Damazein

Damazein is a financial service company.

SweetGen Limited

SweetGen Limited has cleaning dissolved organic molecules in industrial wastewater.

RiAlAiR

RiAlAiR develops sustainable technology for vehicle equipment used by the marine industry.

SulNOx Group

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

Loogun

The Loogun is a hand-held motorised device that cleans above and below the waterline in a toilet.

Next Step Estates

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

Greenzest

Greenzest is a business cleaning firm that prioritizes environmental protection.

Prime Cleaners London

Prime Cleaners London is a Cleaning company operating

Lucy Cleaning Services

Lucy Cleaning Services is a Affordable Cleaning Services in London.

Tradition

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

Syntec Projects

Syntec Projects is a construction company.

Star Domestic Cleaners

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

Magic Cleaners London

Magic Cleaners London is a cleaning company.

Clean Expert

Clean Expert offers various cleaning services.

Pick N Drop Drycleaners

Laundry and Dry Cleaning Service

All Clean Services

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

Design By Sol

Design By Sol is a design studio.

H2 Bulletin

News and Analysis

CoreOne

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

Soil Xchange

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

JPC

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

Tersus Services

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

InfectProtect

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

Apollo Janitorial Supplies

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

Glen’s Gutters London

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

Anyclean

Anyclean Is a Highly Recommended Cleaning Company.

Handy Cleaners

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

Rug Cleaners London

Rug Cleaners London is a professional cleaning company

O’Donovan

O’Donovan is a waste management company.

Royal Carpet Cleaner

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

Rug Master store

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

The World Refining Association

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

RUSTON wheb

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

London Pro Cleaning

London Pro Cleaning is a Domestic Cleaning Service Provider

Shiny Carpets London

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

Vestax

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

House Clean London

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

Top Carpet Cleaner

Top Carpet Cleaner is a carpet cleaning services

Enviro Waste

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

Pure Blue Cleaning London

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

London Mila Cleaning

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