Company lists · Data refreshed September 2026

Top 25 Carbon software companies based in the United Kingdom

Name: Carbon 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 445 companies tracked

RevenueBase identified 445 carbon software companies headquartered in the United Kingdom as of September 2026 and tracks 5,979 professional contacts across them, including 2,708 with verified work emails. London is the largest hub.

This list covers carbon 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

445Companies

5,979Contacts tracked

2,708Verified emails

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The 25 largest carbon software companies based in the United Kingdom

Ranked by team size

Top 25 of 445 carbon 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 carbon 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	KBC A Yokogawa Company	Indirect evidence	Walton-on-thames, United KingdomHQ checked Sep 21, 2026	201-500	658 contacts →
	Indirect evidence “We are passionate about driving sustainable change for our planet.” Source: RevenueBase Database · checked Sep 21, 2026
2	SEDEX	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
3	Inspired PLC	Partial evidence	Kirkham, United KingdomHQ checked Sep 21, 2026	501-1,000	373 contacts →
	Partial evidence “Inspired PLC is a leading technology-enabled provider of energy and sustainability solutions that allow UK and Irish businesses to transition to net-zero carbon and manage their…” Source: RevenueBase Database · checked Sep 21, 2026
4	ESG Book	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	212 contacts →
	Indirect evidence “ESG Book and EthiFinance have merged!” Source: RevenueBase Database · checked Sep 21, 2026
5	Carbon Clean	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	188 contacts →
	Partial evidence “Carbon Clean is the point-source carbon capture expert, driving the decarbonisation of hard-to-abate industries for more than 15 years.” Source: RevenueBase Database · checked Sep 21, 2026
6	Evora Global	Partial evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
7	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
8	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
9	Ecolibrium	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	109 contacts →
	Indirect evidence “Ecolibrium is a sustainability tech company that empowers people to make better decisions based on proven data-driven ML algorithms through continuous monitoring, analysis and…” Source: RevenueBase Database · checked Sep 21, 2026
10	Alfa Energy An Edison Energy Company	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	88 contacts →
	Indirect 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 21, 2026
11	Altruistiq	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	83 contacts →
	Indirect evidence “Altruistiq is a leading Sustainability Intelligence platform trusted by companies across the agriculture value chain.” Source: RevenueBase Database · checked Sep 21, 2026
12	clearvue.business	Partial evidence	Gateshead, United KingdomHQ checked Sep 21, 2026	51-200	81 contacts →
	Partial evidence “We enable businesses to succeed in the environmental components of their ESG strategies through comprehensive net zero consulting services and ground-breaking carbon and energy…” Source: RevenueBase Database · checked Sep 21, 2026
13	Team Energy Auditing Agency LTD	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 21, 2026	51-200	69 contacts →
	Partial evidence “TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…” Source: RevenueBase Database · checked Sep 21, 2026
14	Ecoact Part Of Schneider Electric	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	69 contacts →
	Indirect evidence “EcoAct is now SE Advisory Services.” Source: RevenueBase Database · checked Sep 21, 2026
15	City Science	Partial evidence	Exeter, United KingdomHQ checked Sep 21, 2026	51-200	68 contacts →
	Partial evidence “CARBON FIRST ENGINEERING City Science is the first engineering company dedicated to decarbonisation.” Source: RevenueBase Database · checked Sep 21, 2026
16	The Miles Consultancy	Partial evidence	Crewe, United KingdomHQ checked Sep 21, 2026	51-200	67 contacts →
	Partial evidence “Our mission at The Miles Consultancy (TMC) is to empower businesses with innovative, digital solutions and data-driven insights that reduce costs, lower carbon emissions and…” Source: RevenueBase Database · checked Sep 21, 2026
17	Trident Your Partner In Planet-First Energy	Partial evidence	Blackpool, United KingdomHQ checked Sep 21, 2026	51-200	65 contacts →
	Partial evidence “From world famous brands to multi-national industrials, we strive to make carbon net zero ambitions a reality; by benchmarking where you are today to developing a robust net zero…” Source: RevenueBase Database · checked Sep 21, 2026
18	Manufacture 2030 M2030	Indirect evidence	Oxford, United KingdomHQ checked Sep 21, 2026	51-200	63 contacts →
	Indirect evidence “Manufacture 2030 provides global corporations with the certainty they need to hit their Scope 3 emissions reduction targets, using our unique platform, to measure, manage and…” Source: RevenueBase Database · checked Sep 21, 2026
19	Climate Connect Digital	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	63 contacts →
	Partial 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
20	Kinto Join Limited	Partial evidence	Epsom, United KingdomHQ checked Sep 21, 2026	51-200	61 contacts →
	Partial 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
21	Lorax EPI	Indirect evidence	Rugby, United KingdomHQ checked Sep 21, 2026	11-50	61 contacts →
	Indirect 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 21, 2026
22	O.C.O Technology LTD	Partial evidence	East Wretham, United KingdomHQ checked Sep 21, 2026	51-200	46 contacts →
	Partial evidence “O.C.O are a global clean tech company transforming thermal residues which would otherwise go to landfill through an innovative carbon capture process which permanently stores…” Source: RevenueBase Database · checked Sep 21, 2026
23	Aether	Indirect evidence	Oxford, United KingdomHQ checked Sep 21, 2026	11-50	45 contacts →
	Indirect evidence “Aether provides consultancy in air quality and climate change emissions inventories, forecasting and policy analysis.” Source: RevenueBase Database · checked Sep 21, 2026
24	Zevero	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	45 contacts →
	Partial evidence “Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.” Source: RevenueBase Database · checked Sep 21, 2026
25	Diginex Nasdaq Dgnx	Partial evidence	London, United KingdomHQ checked Sep 21, 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 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: carbon 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 carbon software companies.
Partial evidence: Its own public description names part of carbon software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon 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 445 carbon software companies based in the United Kingdom

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Carbon software companies based in the United Kingdom at a glance

As of Sep 21, 2026

45.3%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

44.9%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

291

11-50

118

51-200

201-500

501-1,000

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 445 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 carbon 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 “carbon 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 carbon 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 carbon 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, 2,708 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.

Carbon software companies by metro

Carbon software companies in London200

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

RevenueBase identified 445 carbon 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?

KBC A Yokogawa Company, headquartered in Walton-On-Thames, tops this list with the largest team on record.

Which city has the most carbon software companies?

London leads with 200 headquartered companies, followed by Manchester (18) and Bristol (10).

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 2,708 verified decision-maker contacts tracked across these 445 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.