Company lists · Data refreshed September 2026

Top 25 Esg companies based in the United Kingdom

Name: Esg companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 703 companies tracked

RevenueBase identified 703 esg companies headquartered in the United Kingdom as of September 2026 and tracks 19,641 professional contacts across them, including 10,203 with verified work emails. London is the largest hub.

This list covers esg companies headquartered in the 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 19, 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 19, 2026 86% judged on-target in blind review

703Companies

19,641Contacts tracked

10,203Verified emails

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The 25 largest esg companies based in the United Kingdom

Ranked by team size

Top 25 of 703 esg companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to esg 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	ERM	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	5,001-10,000	9,119 contacts →
	Indirect evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 19, 2026
2	SLR Consulting	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	3,848 contacts →
	Indirect evidence “SLR is a committed partner in our clients’ sustainability journeys.” Source: RevenueBase Database · checked Sep 19, 2026
3	Achilles Information Limited	Indirect evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	501-1,000	836 contacts →
	Indirect evidence “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Source: RevenueBase Database · checked Sep 19, 2026
4	SEDEX	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
5	ESG Book	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	212 contacts →
	Strong evidence “ESG Book and EthiFinance have merged!” Source: RevenueBase Database · checked Sep 19, 2026
6	Generation Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	156 contacts →
	Indirect evidence “Overview Generation was established in 2004 as an independent, private, investment management partnership with offices in London and San Francisco.” Source: RevenueBase Database · checked Sep 19, 2026
7	Evora Global	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	148 contacts →
	Indirect evidence “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Source: RevenueBase Database · checked Sep 19, 2026
8	Datamaran	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	140 contacts →
	Strong evidence “Datamaran’s AI platform empowers business leaders to navigate the complex ESG landscape with confidence by transforming vast amounts of information into actionable insights.” Source: RevenueBase Database · checked Sep 19, 2026
9	Updapt	Strong evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
10	Holtara An Apex Group Company	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	100 contacts →
	Indirect evidence “Our mission is to positively impact businesses today, for a sustainable tomorrow.” Source: RevenueBase Database · checked Sep 19, 2026
11	Greengage Environmental LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “Greengage is an independent sustainability and environmental consultancy known for providing bespoke advice and working in partnership with our clients and multi-disciplinary…” Source: RevenueBase Database · checked Sep 19, 2026
12	FLAG	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	84 contacts →
	Indirect evidence “We're a global sustainability agency, providing strategy, communications and reporting support to the world’s leading brands.” Source: RevenueBase Database · checked Sep 19, 2026
13	clearvue.business	Strong evidence	Gateshead, United KingdomHQ checked Sep 19, 2026	51-200	81 contacts →
	Strong evidence “We enable businesses to succeed in the environmental components of their ESG strategies through comprehensive net zero consulting services and ground-breaking carbon and energy…” Source: RevenueBase Database · checked Sep 19, 2026
14	Minerva Analytics LTD	Strong evidence	Essex, United KingdomHQ checked Sep 19, 2026	51-200	70 contacts →
	Strong evidence “Minerva Analytics is Europe's independent ESG and stewardship service with a suite of thoughtfully integrated solutions including data, research, together with portfolio analytics…” Source: RevenueBase Database · checked Sep 19, 2026
15	Team Energy Auditing Agency LTD	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…” Source: RevenueBase Database · checked Sep 19, 2026
16	Ecoact Part Of Schneider Electric	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	69 contacts →
	Indirect evidence “EcoAct is now SE Advisory Services.” Source: RevenueBase Database · checked Sep 19, 2026
17	Hudson Sandler	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Strong evidence “We are an independent strategic communications and ESG consultancy headquartered in London.” Source: RevenueBase Database · checked Sep 19, 2026
18	Lucion Delta-Simons LTD	Indirect evidence	Nettleham, United KingdomHQ checked Sep 19, 2026	201-500	64 contacts →
	Indirect evidence “Now part of Lucion, Delta-Simons was established to facilitate sustainable development through multi-disciplinary environmental and health and safety consultancy advice.” Source: RevenueBase Database · checked Sep 19, 2026
19	Action Sustainability	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect 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 19, 2026
20	Kinto Join Limited	Indirect evidence	Epsom, United KingdomHQ checked Sep 19, 2026	51-200	61 contacts →
	Indirect evidence “We help organisations understand, measure, and meaningfully reduce their environmental impact through a unique combination of expert consultancy, advanced carbon accounting…” Source: RevenueBase Database · checked Sep 19, 2026
21	Lorax EPI	Indirect evidence	Rugby, United KingdomHQ checked Sep 19, 2026	11-50	61 contacts →
	Indirect evidence “Lorax EPI is an environmental and sustainability reporting company focussed on supporting businesses who comply with, or commit to, a vast range of global packaging, plastics…” Source: RevenueBase Database · checked Sep 19, 2026
22	Bioregional	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	50 contacts →
	Indirect evidence “We’re agile sustainability experts who break daunting challenges into achievable, collaborative steps.” Source: RevenueBase Database · checked Sep 19, 2026
23	WRM	Indirect evidence	Otley, United KingdomHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Our world faces unprecedented environmental challenges - from climate change, to biodiversity loss, pollution, and unsustainable resource use.” Source: RevenueBase Database · checked Sep 19, 2026
24	Diginex Nasdaq Dgnx	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	44 contacts →
	Strong 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 19, 2026
25	Nature Positive	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “Nature Positive has a unique combination of environmental, sustainability and business specialists who work with business leaders to help solve their greatest challenges.” Source: RevenueBase Database · checked Sep 19, 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: esg 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 esg companies.
Partial evidence: Its own public description names part of esg companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name esg 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 703 esg companies based in the United Kingdom

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Esg companies based in the United Kingdom at a glance

As of Sep 19, 2026

51.9%Verified-email coverage

27.9Average contacts per company

1-10Median size (employees)

50.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

494

11-50

154

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 703 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 esg 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 the United Kingdom whose own description of what they do matches “esg 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 esg 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 esg companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 10,203 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 19, 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.

Esg companies by metro

Esg companies in London356

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 esg 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 esg companies are there based in the United Kingdom?

RevenueBase identified 703 esg companies headquartered in the 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?

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

Which city has the most esg companies?

London leads with 356 headquartered companies, followed by Bristol (20) and Manchester (17).

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 10,203 verified decision-maker contacts tracked across these 703 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 19, 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.