Company lists · Data refreshed September 2026

Top 25 Emission software companies based in the United Kingdom

Name: Emission software 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 21, 2026 105 companies tracked

RevenueBase identified 105 emission software companies headquartered in the United Kingdom as of September 2026 and tracks 1,857 professional contacts across them, including 865 with verified work emails. London is the largest hub.

This list covers emission software 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 21, 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 21, 2026 86% judged on-target in blind review

105Companies

1,857Contacts tracked

865Verified emails

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The 25 largest emission software companies based in the United Kingdom

Ranked by team size

Top 25 of 105 emission software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to emission 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	Ecoonline	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	620 contacts →
	Indirect 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 21, 2026
2	Updapt	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	123 contacts →
	Indirect 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 21, 2026
3	Amt-Sybex	Indirect evidence	Oxfordshire, United KingdomHQ checked Sep 21, 2026	51-200	120 contacts →
	Indirect evidence “AMT-SYBEX has worked in the infrastructure and energy industries since 1990, witnessing many changes; from privatisation to deregulation, to smart energy and beyond.” Source: RevenueBase Database · checked Sep 21, 2026
4	ERM Libryo	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
5	Climate Connect Digital	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	63 contacts →
	Indirect evidence “Climate Connect Digital (CCD) is a climate-tech company with Digital Monitoring Reporting Verification products in carbon markets.” Source: RevenueBase Database · checked Sep 21, 2026
6	Kinto Join Limited	Indirect evidence	Epsom, United KingdomHQ checked Sep 21, 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 21, 2026
7	Cura Terrae	Indirect evidence	Sheffield, United KingdomHQ checked Sep 21, 2026	201-500	50 contacts →
	Indirect evidence “Our mission is to provide services and solutions to help take care of the Earth.” Source: RevenueBase Database · checked Sep 21, 2026
8	Aether	Partial evidence	Oxford, United KingdomHQ checked Sep 21, 2026	11-50	45 contacts →
	Partial evidence “Aether provides consultancy in air quality and climate change emissions inventories, forecasting and policy analysis.” Source: RevenueBase Database · checked Sep 21, 2026
9	Carbonchain	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	42 contacts →
	Partial 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 21, 2026
10	Karbonwise	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	42 contacts →
	Indirect evidence “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Source: RevenueBase Database · checked Sep 21, 2026
11	Codel International LTD	Indirect evidence	Bakewell, United KingdomHQ checked Sep 21, 2026	51-200	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
12	Minimum	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	29 contacts →
	Partial evidence “Minimum is the leading carbon accounting software for enterprise companies.” Source: RevenueBase Database · checked Sep 21, 2026
13	Earthsense	Indirect evidence	Leicester, United KingdomHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “EarthSense empowers businesses, governments, and communities to make cleaner air a reality.” Source: RevenueBase Database · checked Sep 21, 2026
14	51tocarbonzero	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial evidence “51toCarbonZero is the First Climate & Sustainability-Success Platform - combining proprietary software with hands-on expert advisory to help organisations measure, improve and…” Source: RevenueBase Database · checked Sep 21, 2026
15	A1-Cbiss	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 21, 2026	51-200	24 contacts →
	Indirect evidence “In July 2023, A1-CBISS Limited merged with ENVEA UK Limited.” Source: RevenueBase Database · checked Sep 21, 2026
16	Protea LTD	Partial evidence	Middlewich, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Partial evidence “Protea Ltd delivers customer focused solutions for process, emission and environmental monitoring applications.” Source: RevenueBase Database · checked Sep 21, 2026
17	Greenpixie	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Partial evidence “Greenpixie delivers highly granular, auditable data on cloud and AI usage, breaking down emissions, energy, and cost by service, region, and resource.” Source: RevenueBase Database · checked Sep 21, 2026
18	EHS Data	Partial evidence	Newark, United KingdomHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “World-leading Environmental Data Management Software.” Source: RevenueBase Database · checked Sep 21, 2026
19	Cerc Cambridge Environmental Research Consultants	Indirect evidence	Cambridge, United KingdomHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Cambridge Environmental Research Consultants was established in 1985 with the aim of making use of new developments in environmental research from Cambridge University and…” Source: RevenueBase Database · checked Sep 21, 2026
20	KEY ESG	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect 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 21, 2026
21	Aether Compliance LTD	Indirect evidence	Harlow, United KingdomHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Our mission here at Aether Compliance is to be forward-thinking and dynamic in our approach to completing compliance across all relevant safety and clean air industry standards.” Source: RevenueBase Database · checked Sep 21, 2026
22	Climatise	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “Climatise is a carbon accounting platform that simplifies and streamlines sustainability reporting.” Source: RevenueBase Database · checked Sep 21, 2026
23	Ecometrica	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 21, 2026	501-1,000	15 contacts →
	Indirect evidence “Ecometrica is an expert in climate metrics and part of EcoOnline Global.” Source: RevenueBase Database · checked Sep 21, 2026
24	CEM Solutions UK LTD	Partial evidence	Darley Dale, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “CEM SOLUTIONS (UK) LTD Specialists in Continuous Industrial Emissions Monitoring.” Source: RevenueBase Database · checked Sep 21, 2026
25	Nossa Data	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 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: emission 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 emission software companies.
Partial evidence: Its own public description names part of emission software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name emission 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 105 emission software companies based in the United Kingdom

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Emission software companies based in the United Kingdom at a glance

As of Sep 21, 2026

46.6%Verified-email coverage

17.7Average contacts per company

1-10Median size (employees)

30.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

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 105 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 emission 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 the United Kingdom whose own description of what they do matches “emission 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 emission 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 emission software 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, 865 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 21, 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.

Emission software companies by metro

Emission software companies in London32

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 emission 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 emission software companies are there based in the United Kingdom?

RevenueBase identified 105 emission software 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?

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

Which city has the most emission software companies?

London leads with 32 headquartered companies, followed by Manchester (3) and Belfast (2).

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 865 verified decision-maker contacts tracked across these 105 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 21, 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.