Company lists · Data refreshed September 2026

Top 25 Environmental management system software companies based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 65 companies tracked

RevenueBase identified 65 environmental management system software companies headquartered in London, United Kingdom as of September 2026 and tracks 1,825 professional contacts across them, including 825 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers environmental management system software companies 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 28, 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 28, 2026 86% judged on-target in blind review

65Companies

1,825Contacts tracked

825Verified emails

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The 25 largest environmental management system software companies based in London, United Kingdom

Ranked by team size

Top 25 of 65 environmental management system software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental management system software companies: 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 28, 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 28, 2026
2	SEDEX	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	427 contacts →
	Indirect 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 28, 2026
3	Updapt	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	123 contacts →
	Partial 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 28, 2026
4	ISB Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	119 contacts →
	Partial evidence “ISB Global develops and implements software, Waste & Recycling One (WR1), that integrates, automates, and simplifies to drive greater operational efficiency and profitability for…” Source: RevenueBase Database · checked Sep 28, 2026
5	ERM Libryo	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
6	Carbonchain	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
7	Karbonwise	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Source: RevenueBase Database · checked Sep 28, 2026
8	Natcap	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
9	Minimum	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “Minimum is the leading carbon accounting software for enterprise companies.” Source: RevenueBase Database · checked Sep 28, 2026
10	RIO	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
11	ETOSO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “Etoso is a British software company providing access to the largest source of verified ESG data.” Source: RevenueBase Database · checked Sep 28, 2026
12	KEY ESG	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect 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 28, 2026
13	Gardenia Technologies	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
14	Climatise	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Climatise is a carbon accounting platform that simplifies and streamlines sustainability reporting.” Source: RevenueBase Database · checked Sep 28, 2026
15	Nossa Data	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Nossa Data is a technology company focused on supporting companies with their ESG Data Management, Analytics and Reporting.” Source: RevenueBase Database · checked Sep 28, 2026
16	Sustained	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Sustained empowers food companies to design sustainable products, reduce environmental footprint and communicate their impact with confidence.” Source: RevenueBase Database · checked Sep 28, 2026
17	Greenstone	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “At Greenstone, we provide award-winning software solutions and services enabling organisations to advance their sustainability strategies and become responsible businesses.” Source: RevenueBase Database · checked Sep 28, 2026
18	T-Scan LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “T-Scan Solutions is a cutting-edge technology company specializing in advanced Environmental Monitoring Solutions for industrial and commercial applications, compliant with ISO…” Source: RevenueBase Database · checked Sep 28, 2026
19	WEEVA	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “Weeva is a SaaS platform that enables tourism businesses to adopt measurable and holistic sustainability practices to improve operational efficiency and build resilience, driving…” Source: RevenueBase Database · checked Sep 28, 2026
20	Greenspark	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Greenspark incentivises and inspires companies to take action on environmental and social issues around the world.” Source: RevenueBase Database · checked Sep 28, 2026
21	Esg360	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “ESG360° is an enterprise SaaS platform helping listed and large private companies to enhance enterprise value by managing ESG as a strategic asset.” Source: RevenueBase Database · checked Sep 28, 2026
22	GAIA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Gaia is a UK-based green technology company that builds online tools for companies and corporations within the environmental space.” Source: RevenueBase Database · checked Sep 28, 2026
23	DASH	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Dash provides cloud-based solution to enterprises to efficiently collect, store and manage their ESG data.” Source: RevenueBase Database · checked Sep 28, 2026
24	Levelup ESG	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “LevelUp ESG Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
25	NOTCH	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	3 contacts →
	Indirect evidence “At notch, we believe carbon accounting is not simply compliance - it’s a business opportunity.” Source: RevenueBase Database · checked Sep 28, 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 management system software companies. 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 management system software companies.
Partial evidence: Its own public description names part of environmental management system software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental management system software companies. 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 65 environmental management system software companies based in London, United Kingdom

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Environmental management system software companies based in London, United Kingdom at a glance

As of Sep 28, 2026

45.2%Verified-email coverage

28.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 65 companies.

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 management system software companies, 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 management system software companies”. 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 management system software companies), 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 management system software companies, 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, 825 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 28, 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.

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 management system software companies, 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 management system software companies are there based in London, United Kingdom?

RevenueBase identified 65 environmental management system software companies 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 in the United Kingdom has the most environmental management system software companies?

London leads the United Kingdom with 65 headquartered companies, followed by Edinburgh (7) and Aberdeen (6).

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 825 verified decision-maker contacts tracked across these 65 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 28, 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.