Company lists · Data refreshed September 2026

Top 25 Corporate sustainability agencies based in the United Kingdom

Name: Corporate sustainability agencies 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 1,060 companies tracked

RevenueBase identified 1,060 corporate sustainability agencies headquartered in the United Kingdom as of September 2026 and tracks 20,726 professional contacts across them, including 10,682 with verified work emails. London is the largest hub.

This list covers corporate sustainability agencies 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

1,060Companies

20,726Contacts tracked

10,682Verified emails

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The 25 largest corporate sustainability agencies based in the United Kingdom

Ranked by team size

Top 25 of 1,060 corporate sustainability agencies 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 corporate sustainability agencies: 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	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	5,001-10,000	9,119 contacts →
	Partial evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 19, 2026
2	SLR Consulting	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	3,848 contacts →
	Partial evidence “SLR is a committed partner in our clients’ sustainability journeys.” Source: RevenueBase Database · checked Sep 19, 2026
3	Valpak Limited	Partial evidence	Stratford-upon-avon, United KingdomHQ checked Sep 19, 2026	201-500	347 contacts →
	Partial evidence “Valpak, a Reconomy brand, is an EcoVadis Platinum certified leader in environmental compliance, recycling, and sustainability solutions.” Source: RevenueBase Database · checked Sep 19, 2026
4	Wardell Armstrong LLP NOW SLR	Indirect evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	501-1,000	253 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
5	RSK Biocensus	Indirect evidence	Helsby, United KingdomHQ checked Sep 19, 2026	201-500	164 contacts →
	Indirect evidence “RSK Biocensus is an ecological consultancy with a presence across the country and an extensive network of ecologists throughout the UK.” Source: RevenueBase Database · checked Sep 19, 2026
6	ACRE	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	158 contacts →
	Partial evidence “Acre is the global market leader for sustainability executive search and recruitment services, exclusively focused on integrating sustainability and catalysing positive change…” Source: RevenueBase Database · checked Sep 19, 2026
7	Eunomia Research & Consulting	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	143 contacts →
	Indirect evidence “At Eunomia, we're social-environmental problem-solvers and researchers with a difference.” Source: RevenueBase Database · checked Sep 19, 2026
8	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
9	Longevity Partners	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	115 contacts →
	Partial evidence “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
10	3keel	Partial evidence	Oxford, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial evidence “3Keel is an award-winning B-Corp sustainability consultancy committed to making systems, supply chains and landscapes fit for the future.” Source: RevenueBase Database · checked Sep 19, 2026
11	Greengage Environmental LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial 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	AES Sustainability Consultants	Partial evidence	Tiverton, United KingdomHQ checked Sep 19, 2026	51-200	92 contacts →
	Partial evidence “AES Sustainability Consultants is a leading technical consultancy that delivers value engineered solutions across the homebuilding and construction industries.” Source: RevenueBase Database · checked Sep 19, 2026
13	Sustainable Advantage	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	89 contacts →
	Indirect evidence “Sustainable Advantage partners with Private Equity funds and businesses across the UK, France, and wider Europe.” Source: RevenueBase Database · checked Sep 19, 2026
14	FLAG	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	84 contacts →
	Partial 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
15	clearvue.business	Indirect evidence	Gateshead, United KingdomHQ checked Sep 19, 2026	51-200	81 contacts →
	Indirect 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
16	Bluwin	Indirect evidence	Huddersfield, United KingdomHQ checked Sep 19, 2026	51-200	77 contacts →
	Indirect evidence “Bluwin is a high-impact climate solution provider whose mission is to contribute to a better world and better quality of life by providing solutions which reduce the adverse…” Source: RevenueBase Database · checked Sep 19, 2026
17	Envirocentre	Indirect evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “EnviroCentre is a solutions orientated consultancy that has a proven track record in providing innovative, effective and valuable advice.” Source: RevenueBase Database · checked Sep 19, 2026
18	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
19	The Miles Consultancy	Indirect evidence	Crewe, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “Our mission at The Miles Consultancy (TMC) is to empower businesses with innovative, digital solutions and data-driven insights that reduce costs, lower carbon emissions and…” Source: RevenueBase Database · checked Sep 19, 2026
20	Trident Your Partner In Planet-First Energy	Indirect evidence	Blackpool, United KingdomHQ checked Sep 19, 2026	51-200	65 contacts →
	Indirect evidence “From world famous brands to multi-national industrials, we strive to make carbon net zero ambitions a reality; by benchmarking where you are today to developing a robust net zero…” Source: RevenueBase Database · checked Sep 19, 2026
21	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
22	Action Sustainability	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
23	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
24	Lorax EPI	Partial evidence	Rugby, United KingdomHQ checked Sep 19, 2026	11-50	61 contacts →
	Partial 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
25	Resource Futures	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	55 contacts →
	Partial evidence “As experts in circularity, data, policy, behaviour change, communities, and waste strategy, we can tackle any sustainability challenge around resource and material use.” 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: corporate sustainability agencies. 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 corporate sustainability agencies.
Partial evidence: Its own public description names part of corporate sustainability agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate sustainability agencies. 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 1,060 corporate sustainability agencies based in the United Kingdom

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Corporate sustainability agencies based in the United Kingdom at a glance

As of Sep 19, 2026

51.5%Verified-email coverage

19.6Average contacts per company

1-10Median size (employees)

38.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

799

11-50

195

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 1,060 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 corporate sustainability agencies, 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 “corporate sustainability agencies”. 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 corporate sustainability agencies), 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 corporate sustainability agencies, 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, 10,682 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.

Corporate sustainability agencies by metro

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 corporate sustainability agencies, 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 corporate sustainability agencies are there based in the United Kingdom?

RevenueBase identified 1,060 corporate sustainability agencies 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 corporate sustainability agencies?

London leads with 405 headquartered companies, followed by Bristol (31) and Manchester (28).

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 10,682 verified decision-maker contacts tracked across these 1,060 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.