Company lists · Data refreshed September 2026

Top 25 Sustainability assessment companies based in the United Kingdom

Name: Sustainability assessment 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 22, 2026 310 companies tracked

RevenueBase identified 310 sustainability assessment companies headquartered in the United Kingdom as of September 2026 and tracks 11,797 professional contacts across them, including 6,015 with verified work emails. London is the largest hub.

This list covers sustainability assessment 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 22, 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 22, 2026 86% judged on-target in blind review

310Companies

11,797Contacts tracked

6,015Verified emails

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The 25 largest sustainability assessment companies based in the United Kingdom

Ranked by team size

Top 25 of 310 sustainability assessment companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability assessment 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	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	5,001-10,000	9,119 contacts →
	Partial evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 22, 2026
2	ESG Book	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	212 contacts →
	Indirect evidence “ESG Book and EthiFinance have merged!” Source: RevenueBase Database · checked Sep 22, 2026
3	Evora Global	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	148 contacts →
	Partial evidence “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Source: RevenueBase Database · checked Sep 22, 2026
4	Greengage Environmental LTD	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
5	AES Sustainability Consultants	Partial evidence	Tiverton, United KingdomHQ checked Sep 22, 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 22, 2026
6	FLAG	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
7	Altruistiq	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
8	Bluwin	Indirect evidence	Huddersfield, United KingdomHQ checked Sep 22, 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 22, 2026
9	Kinto Join Limited	Indirect evidence	Epsom, United KingdomHQ checked Sep 22, 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 22, 2026
10	Lorax EPI	Partial evidence	Rugby, United KingdomHQ checked Sep 22, 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 22, 2026
11	Minviro	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	43 contacts →
	Partial evidence “Minviro is a global leader in Life Cycle Assessment (LCA) services, offering software, consultancy, research, and database solutions to companies driving the energy transition.” Source: RevenueBase Database · checked Sep 22, 2026
12	Eight Versa	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “At Eight Versa, we deliver a new direction for a balanced future.” Source: RevenueBase Database · checked Sep 22, 2026
13	Energise B Corp	Partial evidence	St Neots, United KingdomHQ checked Sep 22, 2026	11-50	39 contacts →
	Partial evidence “We are Energise – your sustainability partner.” Source: RevenueBase Database · checked Sep 22, 2026
14	Kite Insights	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
15	Metsims Sustainability Consulting	Strong evidence	Oxford, United KingdomHQ checked Sep 22, 2026	11-50	34 contacts →
	Strong evidence “Based in Oxford, UK and in Istanbul, Turkey, Metsims is the leading sustainability consultancy specialised in life cycle assessment (LCA), corporate and product carbon footprint…” Source: RevenueBase Database · checked Sep 22, 2026
16	LEAFR	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
17	SCS Sustainable Construction Services	Indirect evidence	Bristol, United KingdomHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “We believe that if you understand your environmental targets, you will have a better understanding of their real-world impacts.” Source: RevenueBase Database · checked Sep 22, 2026
18	Envance	Indirect evidence	Stockport, United KingdomHQ checked Sep 22, 2026	11-50	29 contacts →
	Indirect evidence “We believe that a better future for people and the planet doesn't have to be at the expense of success in the present.” Source: RevenueBase Database · checked Sep 22, 2026
19	SB CO	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
20	TBL	Partial evidence	Lancaster, United KingdomHQ checked Sep 22, 2026	11-50	26 contacts →
	Partial evidence “TBL is the sustainability advisory service that helps businesses balance people, planet and profit – the triple bottom line.” Source: RevenueBase Database · checked Sep 22, 2026
21	Positive Luxury	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
22	Green Easy	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	25 contacts →
	Partial evidence “If you're looking for sustainability consultancy, look no further!” Source: RevenueBase Database · checked Sep 22, 2026
23	Canbury	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
24	Decerna	Partial evidence	Cramlington, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “Decerna is a specialist commercial sustainability consultancy.” Source: RevenueBase Database · checked Sep 22, 2026
25	Sancroft	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “Sancroft is an award-winning sustainability consultancy based in London.” Source: RevenueBase Database · checked Sep 22, 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: sustainability assessment 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 sustainability assessment companies.
Partial evidence: Its own public description names part of sustainability assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability assessment 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 310 sustainability assessment companies based in the United Kingdom

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Sustainability assessment companies based in the United Kingdom at a glance

As of Sep 22, 2026

51.0%Verified-email coverage

38.1Average contacts per company

1-10Median size (employees)

40.3%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

214

11-50

51-200

201-500

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 310 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 sustainability assessment 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 “sustainability assessment 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 sustainability assessment 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 sustainability assessment 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, 6,015 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 22, 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.

Sustainability assessment companies by metro

Sustainability assessment companies in London125

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 sustainability assessment 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 sustainability assessment companies are there based in the United Kingdom?

RevenueBase identified 310 sustainability assessment 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 sustainability assessment companies?

London leads with 125 headquartered companies, followed by Bristol (12) and Manchester (11).

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 6,015 verified decision-maker contacts tracked across these 310 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 22, 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.