Company lists · Data refreshed September 2026

Top 25 Sustainability disclosure software companies based in London, United Kingdom

Name: Sustainability disclosure software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 87 companies tracked

RevenueBase identified 87 sustainability disclosure software companies headquartered in London, United Kingdom as of September 2026 and tracks 2,487 professional contacts across them, including 1,194 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers sustainability disclosure software companies 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 29, 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 29, 2026 86% judged on-target in blind review

87Companies

2,487Contacts tracked

1,194Verified emails

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The 25 largest sustainability disclosure software companies based in London, United Kingdom

Ranked by team size

Top 25 of 87 sustainability disclosure software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability disclosure software 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	CDP	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	702 contacts →
	Indirect evidence “As the founder of environmental reporting, we believe in transparency and the power of data to drive change.” Source: RevenueBase Database · checked Sep 29, 2026
2	SEDEX	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	427 contacts →
	Partial 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 29, 2026
3	ESG Book	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	212 contacts →
	Indirect evidence “ESG Book and EthiFinance have merged!” Source: RevenueBase Database · checked Sep 29, 2026
4	Evora Global	Strong evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
5	Updapt	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
6	Altruistiq	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
7	Action Sustainability	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
8	Diginex Nasdaq Dgnx	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	44 contacts →
	Indirect 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 29, 2026
9	Carbonchain	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	42 contacts →
	Indirect evidence “CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…” Source: RevenueBase Database · checked Sep 29, 2026
10	Karbonwise	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	42 contacts →
	Partial evidence “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Source: RevenueBase Database · checked Sep 29, 2026
11	World Wide Generation	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	35 contacts →
	Partial evidence “World Wide Generation is a sustainability reporting fintech company, championing trusted data and measuring for impact, through ground-breaking tech solutions.” Source: RevenueBase Database · checked Sep 29, 2026
12	Natcap	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “Natcap is the world's leading nature intelligence provider, helping global companies measure, report, and act on nature and biodiversity risks and opportunities.” Source: RevenueBase Database · checked Sep 29, 2026
13	Minimum	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	29 contacts →
	Partial evidence “Minimum is the leading carbon accounting software for enterprise companies.” Source: RevenueBase Database · checked Sep 29, 2026
14	Canbury	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
15	RIO	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “Rio is an AI-powered sustainability management platform helping global businesses and governmental organisations to understand and improve their environmental and social impact.” Source: RevenueBase Database · checked Sep 29, 2026
16	ETOSO	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	20 contacts →
	Partial evidence “Etoso is a British software company providing access to the largest source of verified ESG data.” Source: RevenueBase Database · checked Sep 29, 2026
17	KEY ESG	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “KEY ESG is the platform where sustainability teams and their business colleagues collect, validate, analyse, and report ESG data in one place and connect it to the decisions that…” Source: RevenueBase Database · checked Sep 29, 2026
18	Gardenia Technologies	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “Gardenia Technologies builds platforms that streamline the gathering, analysis, and reporting of corporate data.” Source: RevenueBase Database · checked Sep 29, 2026
19	Terra Instinct	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	16 contacts →
	Partial evidence “Managed sustainability reporting service and technical sustainability advisory” Source: RevenueBase Database · checked Sep 29, 2026
20	Climatise	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	15 contacts →
	Partial evidence “Climatise is a carbon accounting platform that simplifies and streamlines sustainability reporting.” Source: RevenueBase Database · checked Sep 29, 2026
21	Unibloom B Corp	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	15 contacts →
	Indirect evidence “Most companies still run sustainable procurement and climate transition work in Excel, PowerPoints, and manual workshops.” Source: RevenueBase Database · checked Sep 29, 2026
22	Nossa Data	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect evidence “Nossa Data is a technology company focused on supporting companies with their ESG Data Management, Analytics and Reporting.” Source: RevenueBase Database · checked Sep 29, 2026
23	Greenstone	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Strong evidence “At Greenstone, we provide award-winning software solutions and services enabling organisations to advance their sustainability strategies and become responsible businesses.” Source: RevenueBase Database · checked Sep 29, 2026
24	Optima Energy	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Partial evidence “Our advanced, automated technology delivers energy and sustainability data that sets new standards for Environmental, Social and Governance (ESG) reporting.” Source: RevenueBase Database · checked Sep 29, 2026
25	Route2	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	11 contacts →
	Indirect evidence “Route2 collaborates with businesses, investors, and governments to quantify Value2Society™ (V2S™), a new metric of performance, forging links between financial performance and…” Source: RevenueBase Database · checked Sep 29, 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 disclosure software 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 disclosure software companies.
Partial evidence: Its own public description names part of sustainability disclosure software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability disclosure software 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 87 sustainability disclosure software companies based in London, United Kingdom

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Sustainability disclosure software companies based in London, United Kingdom at a glance

As of Sep 29, 2026

48.0%Verified-email coverage

28.6Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 87 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 disclosure software 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 London, United Kingdom whose own description of what they do matches “sustainability disclosure software 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 disclosure software 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 disclosure software companies, 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, 1,194 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 29, 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 sustainability disclosure software 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 disclosure software companies are there based in London, United Kingdom?

RevenueBase identified 87 sustainability disclosure software companies 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?

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

Which city in the United Kingdom has the most sustainability disclosure software companies?

London leads the United Kingdom with 87 headquartered companies, followed by Manchester (7) and Edinburgh (5).

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 1,194 verified decision-maker contacts tracked across these 87 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 29, 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.