Company lists · Data refreshed September 2026

Top 25 Corporate sustainability agencies based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 405 companies tracked

RevenueBase identified 405 corporate sustainability agencies headquartered in London, United Kingdom as of September 2026 and tracks 15,583 professional contacts across them, including 8,293 with verified work emails. London is the largest hub.

This list covers corporate sustainability agencies 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 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

405Companies

15,583Contacts tracked

8,293Verified emails

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The 25 largest corporate sustainability agencies based in London, United Kingdom

Ranked by team size

Top 25 of 405 corporate sustainability agencies based in London, 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	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	Bioregional	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	50 contacts →
	Partial evidence “We’re agile sustainability experts who break daunting challenges into achievable, collaborative steps.” Source: RevenueBase Database · checked Sep 19, 2026
12	Eight Versa	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “At Eight Versa, we deliver a new direction for a balanced future.” Source: RevenueBase Database · checked Sep 19, 2026
13	Brodie	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	39 contacts →
	Partial evidence “We are here to drive three significant changes: CHANGE CORPORATE IMPACT: help business to reframe and re-orient its role in society CHANGE CONSUMPTION: help brands re-wire for the…” Source: RevenueBase Database · checked Sep 19, 2026
14	Kite Insights	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Kite Insights empowers businesses and people to integrate sustainability into the fabric of your organisations.” Source: RevenueBase Database · checked Sep 19, 2026
15	LEAFR	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	n/a	34 contacts →
	Partial evidence “Leafr is reshaping the sustainability team of the future: faster, leaner, and focused on real progress.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ikano Insight	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Ikano Insight helps businesses turn ambition into action.” Source: RevenueBase Database · checked Sep 19, 2026
17	CEN Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “CEN Group is a leading, UK-based investor communications and sustainability consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
18	Robertsbridge	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Robertsbridge advises major companies as they navigate the increasingly complex intersection of sustainability, climate, nature, and geopolitics.” Source: RevenueBase Database · checked Sep 19, 2026
19	SB CO	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	27 contacts →
	Partial evidence “SB+CO is a sustainability consultancy that advises companies on strategy, sustainability activation and integration, ESG, stakeholder engagement and communications – and…” Source: RevenueBase Database · checked Sep 19, 2026
20	Positive Luxury	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “Positive Luxury are the sustainability experts and growth partners for the luxury industry, working with global brands to turn sustainability into a competitive advantage.” Source: RevenueBase Database · checked Sep 19, 2026
21	Canbury	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “We use the latest technologies to provide our clients with a full service of sustainability support - from source data through to client reporting.” Source: RevenueBase Database · checked Sep 19, 2026
22	Carbonquota	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
23	Sancroft	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Sancroft is an award-winning sustainability consultancy based in London.” Source: RevenueBase Database · checked Sep 19, 2026
24	Kumi Consulting LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “At Kumi we connect global raw material supply chains with responsible business practices in developing countries.” Source: RevenueBase Database · checked Sep 19, 2026
25	Aldersgate Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Aldersgate Group is a membership organisation of businesses, NGOs, public sector bodies, trade associations and individuals like Parliamentarians who are all sustainability…” 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 405 corporate sustainability agencies based in London, United Kingdom

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Corporate sustainability agencies based in London, United Kingdom at a glance

As of Sep 19, 2026

53.2%Verified-email coverage

38.5Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

287

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

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 405 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 London, 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 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, 8,293 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 in the United Kingdom

Corporate sustainability agencies in London405
Corporate sustainability agencies in Bristol31
Corporate sustainability agencies in Manchester28

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 London, United Kingdom?

RevenueBase identified 405 corporate sustainability agencies 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?

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 8,293 verified decision-maker contacts tracked across these 405 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.