Company lists · Data refreshed November 2026

Top 25 Sustainable technology startups based in the United Kingdom

RevenueBase identified 109 company matches for sustainable technology startups associated with the United Kingdom as of November 2026 and tracks 774 professional contacts across them, including 268 with verified work emails. London is the largest hub.

This list covers company matches for sustainable technology startups associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
109Companies
774Contacts tracked
268Verified emails
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The 25 largest sustainable technology startups based in the United Kingdom

Ranked by team size
Top 25 of 109 company matches for sustainable technology startups based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“We challenge ourselves to- Protect the environment by finding new ways to decarbonise the semiconductor industry- Extend the life cycle of components as opposed to the traditional…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Rapid Innovation Group (RIG) is a commercialisation firm focused on high impact industrial technologies that have a global application where defensibility is primarily based on…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchStoneleigh Park, United KingdomHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Guiding businesses in their clean energy transition, by providing the best energy technology that prioritizes self-sufficiency, economic responsibility, and environmental…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“At CLT, we believe clean technology is essential to building a resilient, competitive, and sustainable economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon & Essex, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Welcome to LocoSoco where the possibilities for sustainability are endless.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCambridge, United KingdomHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“The world's dirtiest industries run on high-energy chemical processes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“We help organisations and communities cut their carbon and financial footprint by reducing electricity, gas and water consumption and waste production.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Katrick Technologies Ltd is a start-up company that is focused on innovative engineering technologies by performing energy research and development on eco-friendly concepts for a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchStroud, United KingdomHQ recorded Nov 6, 2026501-1,00010 contacts →

Exact match

“The Green Britain Group is at the forefront of the global green industrial revolution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Welcome to Greenversity Renewables!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Building novel solutions for clean air, water and energy with AI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Giki Actions helps companies quickly and affordably create their own carbon reduction plan.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSwansea, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We're on a mission to help save the planet by reducing home emissions by 2030.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“350PPM is on a mission to reduce the amount of CO₂ in the atmosphere to 350 parts per million and reduce CO₂e (equivalent greenhouse gases) to similar levels.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Sabien Technology Group is a company focused on building a portfolio of solutions, in the heating, cooling and transportation sectors, that deliver immediate reductions in CO2…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Our goal is to deliver genuine impact for brands working to improve the world around us and protect the planet's delicate climate.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchTilbury, United KingdomHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Rayvac Airtemp friendly and efficient workforce will strive to become the leading organisation in the region assisting business and communities alike to achieve a far more…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCity Of London, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Capitas Finance specialises in financing energy solutions for carbon-conscious businesses and public sector organisations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHarpenden, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“EcoNomad Solutions is an award winning agritech start-up and 2021 FoodTech 500 finalist.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchManchester, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“We develop solutions that make your business more efficient and environmentally friendly with our innovative approach to sustainability and your living data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“It all started in 2012, with the delivery of one Gousto box.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAberystwyth, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Nellie exists to design, develop and deploy technologies that mitigate the negative effects of climate change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLlandybie Carmarthenshire, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Gaia has developed and patented a range of rapidly deployable carbon reduction solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNewcastle-upon-tyne, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Otaski Energy Solutions focuses on developing intelligence to save money, energy and reduced carbon footprints by implementing our cutting-edge INtuitIV technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 109 sustainable technology startups based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 268 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sustainable technology startups based in the United Kingdom at a glance

As of Nov 6, 2026
34.6%Verified-email coverage
7.1Average contacts per company
1-10Median size (employees)
41.3%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
67
11-50
37
51-200
2
201-500
2
501-1,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 109 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “sustainable technology startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 268 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Sustainable technology startups by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sustainable technology startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sustainable technology startups are there based in the United Kingdom?

RevenueBase identified 109 company matches for sustainable technology startups associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CFP Energy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most sustainable technology startups?

London leads with 45 company records, followed by Manchester (4) and Belfast (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 268 professional contacts with verified work emails tracked across these 109 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.