Company lists · Data refreshed September 2026

Top 25 Esg software implementation consultants based in London, United Kingdom

Name: Esg software implementation consultants 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 317 companies tracked

RevenueBase identified 317 esg software implementation consultants headquartered in London, United Kingdom as of September 2026 and tracks 17,334 professional contacts across them, including 9,209 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers esg software implementation consultants 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

317Companies

17,334Contacts tracked

9,209Verified emails

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The 25 largest esg software implementation consultants based in London, United Kingdom

Ranked by team size

Top 25 of 317 esg software implementation consultants 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 esg software implementation consultants: 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 28, 2026	5,001-10,000	9,119 contacts →
	Indirect evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 28, 2026
2	SLR Consulting	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
3	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	670 contacts →
	Indirect evidence “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: RevenueBase Database · checked Sep 28, 2026
4	Ecoonline	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	620 contacts →
	Partial 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
5	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
6	Evora Global	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	148 contacts →
	Strong evidence “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Source: RevenueBase Database · checked Sep 28, 2026
7	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
8	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
9	Holtara An Apex Group Company	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	100 contacts →
	Indirect evidence “Our mission is to positively impact businesses today, for a sustainable tomorrow.” Source: RevenueBase Database · checked Sep 28, 2026
10	Greengage Environmental LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
11	Sustainable Advantage	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
12	Alfa Energy An Edison Energy Company	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	88 contacts →
	Partial evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 28, 2026
13	Hudson Sandler	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	67 contacts →
	Strong evidence “We are an independent strategic communications and ESG consultancy headquartered in London.” Source: RevenueBase Database · checked Sep 28, 2026
14	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
15	Action Sustainability	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
16	Diginex Nasdaq Dgnx	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	44 contacts →
	Partial 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 28, 2026
17	Eight Versa	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “At Eight Versa, we deliver a new direction for a balanced future.” Source: RevenueBase Database · checked Sep 28, 2026
18	Earth Active LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Strong evidence “Earth Active is an award-winning consultancy with a globally experienced team of bespoke ESG advisors and expert specialists that provide investment and risk due diligence in…” Source: RevenueBase Database · checked Sep 28, 2026
19	AIS Consulting	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “Growing organisations don't outgrow spreadsheets overnight.” Source: RevenueBase Database · checked Sep 28, 2026
20	LEAFR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	34 contacts →
	Indirect evidence “Leafr is reshaping the sustainability team of the future: faster, leaner, and focused on real progress.” Source: RevenueBase Database · checked Sep 28, 2026
21	Ikano Insight	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Ikano Insight helps businesses turn ambition into action.” Source: RevenueBase Database · checked Sep 28, 2026
22	Robertsbridge	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Robertsbridge advises major companies as they navigate the increasingly complex intersection of sustainability, climate, nature, and geopolitics.” Source: RevenueBase Database · checked Sep 28, 2026
23	SB CO	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong 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 28, 2026
24	Translantic Development LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “Translantic Development Limited (TDL) is a leading Environmental and Social Governance service provider, with a strong focus on Social Performance, helping development projects…” Source: RevenueBase Database · checked Sep 28, 2026
25	Avyse Partners	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Strong evidence “Purpose led regulatory consultants specialising in financial crime prevention, conduct, compliance and ESG.” 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: esg software implementation consultants. 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 software implementation consultants.
Partial evidence: Its own public description names part of esg software implementation consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name esg software implementation consultants. 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 317 esg software implementation consultants based in London, United Kingdom

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Esg software implementation consultants based in London, United Kingdom at a glance

As of Sep 28, 2026

53.1%Verified-email coverage

54.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

208

11-50

51-200

201-500

501-1,000

1,001-5,000

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 317 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 software implementation consultants, 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 “esg software implementation consultants”. 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 software implementation consultants), 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 software implementation consultants, 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, 9,209 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 esg software implementation consultants, 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 software implementation consultants are there based in London, United Kingdom?

RevenueBase identified 317 esg software implementation consultants 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 in the United Kingdom has the most esg software implementation consultants?

London leads the United Kingdom with 317 headquartered companies, followed by Manchester (22) and Bristol (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 9,209 verified decision-maker contacts tracked across these 317 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.