Company lists · Data refreshed September 2026

Top 25 Environmental sustainability software developers based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 12, 2026 136 companies tracked

RevenueBase identified 136 company matches for environmental sustainability software developers associated with London, United Kingdom as of September 2026 and tracks 2,938 professional contacts across them, including 1,441 with verified work emails and 202 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for environmental sustainability software developers associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 12, 2026 How this list was built

136Companies

2,938Contacts tracked

1,441Verified emails

202Mobile numbers

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The 25 largest environmental sustainability software developers based in London, United Kingdom

Ranked by team size

Top 25 of 136 company matches for environmental sustainability software developers based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ecoonline	Exact match	London, United KingdomHQ recorded Sep 12, 2026	501-1,000	620 contacts →
	Exact match “EcoOnline delivers uncomplicated environment, health and safety (EHS), chemical management and ESG/sustainability technology solutions to forward-thinking leaders.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
2	SEDEX	Exact match	London, United KingdomHQ recorded Sep 12, 2026	201-500	427 contacts →
	Exact match “Sedex is a global technology company that specialises in data, insights and professional services to empower supply chain sustainability.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
3	ESG Book	Exact match	London, United KingdomHQ recorded Sep 12, 2026	201-500	212 contacts →
	Exact match “ESG Book and EthiFinance have merged!” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
4	Evora Global	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	148 contacts →
	Exact match “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
5	Updapt	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	123 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
6	ZTP	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	115 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
7	Alfa Energy An Edison Energy Company	Exact match	London, United KingdomHQ recorded Sep 12, 2026	201-500	88 contacts →
	Exact match “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
8	Altruistiq	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	83 contacts →
	Exact match “Altruistiq is a leading Sustainability Intelligence platform trusted by companies across the agriculture value chain.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
9	ERM Libryo	Exact match	London, United KingdomHQ recorded Sep 12, 2026	5,001-10,000	66 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
10	Action Sustainability	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	62 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
11	ETUDE	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	47 contacts →
	Exact match “We are a team of sustainability engineers passionate about creating buildings with a positive impact on the environment and the community.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
12	Zevero	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	45 contacts →
	Exact match “Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
13	Diginex Nasdaq Dgnx	Exact match	London, United KingdomHQ recorded Sep 12, 2026	51-200	44 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
14	Carbonchain	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	42 contacts →
	Exact match “CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
15	Karbonwise	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	42 contacts →
	Exact match “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
16	Natcap	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	35 contacts →
	Exact match “Natcap is the world's leading nature intelligence provider, helping global companies measure, report, and act on nature and biodiversity risks and opportunities.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
17	Ikano Insight	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	33 contacts →
	Exact match “Ikano Insight helps businesses turn ambition into action.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
18	Minimum	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	29 contacts →
	Exact match “Minimum is the leading carbon accounting software for enterprise companies.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
19	Carbonquota	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	24 contacts →
	Exact match “We are trusted experts in carbon measurement and reduction, specialising in packaging and print manufacturing, media and logistics sectors.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
20	RIO	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	22 contacts →
	Exact match “Rio is an AI-powered sustainability management platform helping global businesses and governmental organisations to understand and improve their environmental and social impact.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
21	Finboot	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	22 contacts →
	Exact match “Finboot’s technology provides green supply chain management for the world's largest capital-intensive manufacturing companies.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
22	Alectro	Exact match	London, United KingdomHQ recorded Sep 12, 2026	1-10	20 contacts →
	Exact match “Your Net Zero Journey, Simplified on One Platform.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
23	KEY ESG	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	17 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
24	LUNE	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	17 contacts →
	Exact match “Supply chain emissions data is broken.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
25	Gardenia Technologies	Exact match	London, United KingdomHQ recorded Sep 12, 2026	11-50	17 contacts →
	Exact match “Gardenia Technologies builds platforms that streamline the gathering, analysis, and reporting of corporate data.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental sustainability software developers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 136 environmental sustainability software developers based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,441 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental sustainability software developers based in London, United Kingdom at a glance

As of Sep 12, 2026

49.0%Verified-email coverage

6.9%Mobile-number coverage

21.6Average contacts per company

1-10Median size (employees)

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

1,2090–30

21831–60

761–90

090–180

7180+

Company record updated

Median 59.0d

00–30

1,48631–60

1,03661–90

24790–180

169180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with London, United Kingdom whose business descriptions match “environmental sustainability software developers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,441 professional contacts with verified work emails across the full matched dataset. 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 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental sustainability software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental sustainability software developers are there based in London, United Kingdom?

RevenueBase identified 136 company matches for environmental sustainability software developers associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ecoonline tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most environmental sustainability software developers?

London leads the United Kingdom with 148 company records, followed by Manchester (9) and Edinburgh (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,441 professional contacts with verified work emails tracked across these 136 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 12, 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 SmartSearch, 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.