Company lists · Data refreshed September 2026

Top 25 Environmental sustainability software developers based in London, United Kingdom

Name: Environmental sustainability software developers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 12, 2026 136 companies tracked

RevenueBase identified 136 environmental sustainability software developers headquartered in London, United Kingdom as of September 2026 and tracks 2,938 professional contacts across them, including 1,441 with verified work emails and 202 with mobile numbers. London is the largest hub.

This list covers environmental sustainability software developers headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 12, 2026 86% judged on-target in blind review

136Companies

2,938Contacts tracked

1,441Verified emails

202Mobile numbers

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The 25 largest environmental sustainability software developers based in London, United Kingdom

Ranked by team size

Top 25 of 136 environmental sustainability software developers based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to environmental sustainability software developers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ecoonline	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	501-1,000	620 contacts →
	Strong evidence “EcoOnline delivers uncomplicated environment, health and safety (EHS), chemical management and ESG/sustainability technology solutions to forward-thinking leaders.” Source: RevenueBase Database · checked Sep 12, 2026
2	SEDEX	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	427 contacts →
	Partial evidence “Sedex is a global technology company that specialises in data, insights and professional services to empower supply chain sustainability.” Source: RevenueBase Database · checked Sep 12, 2026
3	ESG Book	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	212 contacts →
	Indirect evidence “ESG Book and EthiFinance have merged!” Source: RevenueBase Database · checked Sep 12, 2026
4	Evora Global	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	148 contacts →
	Strong evidence “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Source: RevenueBase Database · checked Sep 12, 2026
5	Updapt	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	123 contacts →
	Strong evidence “We are a new age technology driven company, providing comprehensive SaaS based ESG (Environmental, Social & Governance) solutions to address end to end sustainability needs of…” Source: RevenueBase Database · checked Sep 12, 2026
6	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	115 contacts →
	Indirect evidence “At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…” Source: RevenueBase Database · checked Sep 12, 2026
7	Alfa Energy An Edison Energy Company	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	88 contacts →
	Partial evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 12, 2026
8	Altruistiq	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	83 contacts →
	Partial evidence “Altruistiq is a leading Sustainability Intelligence platform trusted by companies across the agriculture value chain.” Source: RevenueBase Database · checked Sep 12, 2026
9	ERM Libryo	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	5,001-10,000	66 contacts →
	Indirect evidence “ERM Libryo is a trusted and pioneering part of ERM’s suite of digital solutions, designed to help organizations navigate complex regulatory landscapes and operational challenges…” Source: RevenueBase Database · checked Sep 12, 2026
10	Action Sustainability	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	62 contacts →
	Partial evidence “Recognised for its commitment to employees with a sought-after Best Companies “One To Watch” industry standard, Action Sustainability offers a 3-in-1 solution through…” Source: RevenueBase Database · checked Sep 12, 2026
11	ETUDE	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	47 contacts →
	Strong evidence “We are a team of sustainability engineers passionate about creating buildings with a positive impact on the environment and the community.” Source: RevenueBase Database · checked Sep 12, 2026
12	Zevero	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	45 contacts →
	Indirect evidence “Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.” Source: RevenueBase Database · checked Sep 12, 2026
13	Diginex Nasdaq Dgnx	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	44 contacts →
	Indirect evidence “With its suite of solutions, Diginex Ltd unifies carbon accountability, ESG regulatory reporting, human rights due diligence, supply chain risk, worker voice, and ESG investor…” Source: RevenueBase Database · checked Sep 12, 2026
14	Carbonchain	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	42 contacts →
	Indirect evidence “CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…” Source: RevenueBase Database · checked Sep 12, 2026
15	Karbonwise	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	42 contacts →
	Partial evidence “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Source: RevenueBase Database · checked Sep 12, 2026
16	Natcap	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	35 contacts →
	Indirect evidence “Natcap is the world's leading nature intelligence provider, helping global companies measure, report, and act on nature and biodiversity risks and opportunities.” Source: RevenueBase Database · checked Sep 12, 2026
17	Ikano Insight	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	33 contacts →
	Indirect evidence “Ikano Insight helps businesses turn ambition into action.” Source: RevenueBase Database · checked Sep 12, 2026
18	Minimum	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	29 contacts →
	Partial evidence “Minimum is the leading carbon accounting software for enterprise companies.” Source: RevenueBase Database · checked Sep 12, 2026
19	Carbonquota	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	24 contacts →
	Indirect evidence “We are trusted experts in carbon measurement and reduction, specialising in packaging and print manufacturing, media and logistics sectors.” Source: RevenueBase Database · checked Sep 12, 2026
20	RIO	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	22 contacts →
	Strong evidence “Rio is an AI-powered sustainability management platform helping global businesses and governmental organisations to understand and improve their environmental and social impact.” Source: RevenueBase Database · checked Sep 12, 2026
21	Finboot	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	22 contacts →
	Indirect evidence “Finboot’s technology provides green supply chain management for the world's largest capital-intensive manufacturing companies.” Source: RevenueBase Database · checked Sep 12, 2026
22	Alectro	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	20 contacts →
	Indirect evidence “Your Net Zero Journey, Simplified on One Platform.” Source: RevenueBase Database · checked Sep 12, 2026
23	KEY ESG	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	17 contacts →
	Partial evidence “KEY ESG is the platform where sustainability teams and their business colleagues collect, validate, analyse, and report ESG data in one place and connect it to the decisions that…” Source: RevenueBase Database · checked Sep 12, 2026
24	LUNE	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	17 contacts →
	Indirect evidence “Supply chain emissions data is broken.” Source: RevenueBase Database · checked Sep 12, 2026
25	Gardenia Technologies	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	17 contacts →
	Indirect evidence “Gardenia Technologies builds platforms that streamline the gathering, analysis, and reporting of corporate data.” Source: RevenueBase Database · checked Sep 12, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental sustainability software developers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental sustainability software developers.
Partial evidence: Its own public description names part of environmental sustainability software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental sustainability software developers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 136 environmental sustainability software developers based in London, United Kingdom

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Environmental sustainability software developers based in London, United Kingdom at a glance

As of Sep 12, 2026

49.0%Verified-email coverage

6.9%Mobile-number coverage

21.6Average contacts per company

1-10Median size (employees)

108.8%Largest-city concentration · London

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

1,2090–30

21831–60

761–90

090–180

7180+

Company record updated

Median 59.0d

00–30

1,48631–60

1,03661–90

24790–180

169180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental sustainability software developers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “environmental sustainability software developers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental sustainability software developers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental sustainability software developers, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,441 across the full list. 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 September 12, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Environmental sustainability software developers by metro in the United Kingdom

Environmental sustainability software developers in London148

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental sustainability software developers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental sustainability software developers are there based in London, United Kingdom?

RevenueBase identified 136 environmental sustainability software developers headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ecoonline, headquartered in London, tops this list with the largest team on record.

Which city has the most environmental sustainability software developers?

London leads with 148 headquartered companies, followed by Manchester (9) and Edinburgh (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,441 verified decision-maker contacts tracked across these 136 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 12, 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 Smart Search, 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.