Company lists · Data refreshed September 2026

Top 24 Environmental finance companies based in the United Kingdom

Name: Environmental finance 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 19, 2026 124 companies tracked

RevenueBase identified 124 environmental finance companies headquartered in the United Kingdom as of September 2026 and tracks 1,060 professional contacts across them, including 448 with verified work emails. London is the largest hub.

This list covers environmental finance 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 19, 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 19, 2026 86% judged on-target in blind review

124Companies

1,060Contacts tracked

448Verified emails

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The 24 largest environmental finance companies based in the United Kingdom

Ranked by team size

Top 24 of 124 environmental finance companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental finance 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	Sustainable Development Capital, LLP Sdcl	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	74 contacts →
	Strong evidence “Sustainable Development Capital LLP (“SDCL”) is a multi-national investment and financial advisory firm, which specialises in environmental infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
2	Thirdway Partners	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “ThirdWay Partners operates as an impact investment and advisory firm focused on creating inclusive sustainable development and impact.” Source: RevenueBase Database · checked Sep 19, 2026
3	Genesis Capital Group	Partial evidence	Hampton Hill, United KingdomHQ checked Sep 19, 2026	11-50	62 contacts →
	Partial evidence “Genesis Capital has been creating and developing finance programmes for high-tech, energy tech, office fit-outs and other plant and machinery since 1997.” Source: RevenueBase Database · checked Sep 19, 2026
4	Greenbank	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “Tailored investment services, delivered sustainably.” Source: RevenueBase Database · checked Sep 19, 2026
5	ETF Partners	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Founded in 2005, ETF Partners (The Environmental Technologies Fund) stands as Europe's original venture capital firm dedicated to sustainability and impact investing.” Source: RevenueBase Database · checked Sep 19, 2026
6	Allia C&c	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “We support a range of organisations whose core purpose is to transform lives, communities and the environment.” Source: RevenueBase Database · checked Sep 19, 2026
7	Longspur Capital	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	27 contacts →
	Partial evidence “Longspur Capital is a new energy and cleantech specialist offering investment management, corporate finance and investment research.” Source: RevenueBase Database · checked Sep 19, 2026
8	Arch Emerging Markets Partners Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “ARCH Emerging Markets Partners Limited (ARCH) was founded in March 2018 and is a specialist investment advisor with deep emerging market, private equity, asset management and…” Source: RevenueBase Database · checked Sep 19, 2026
9	Connect Earth	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Connect Earth is building the Operating System for Sustainable Finance, a unified data platform that helps financial institutions comply, measure, and act on sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
10	Alexa Capital	Partial evidence	Mayfair, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Financial Advisory for a Sustainable Future.” Source: RevenueBase Database · checked Sep 19, 2026
11	Privilege Finance	Partial evidence	Stretham, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Privilege Finance is a specialist funder with over 20 years’ experience in financing projects which reduce carbon and mitigate against climate change.” Source: RevenueBase Database · checked Sep 19, 2026
12	Iona Capital LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Iona Capital provides equity and subordinated debt into waste projects which have a renewable element.” Source: RevenueBase Database · checked Sep 19, 2026
13	Turquoise International	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “Turquoise is a merchant bank specialising in Energy, Environment and Efficiency.” Source: RevenueBase Database · checked Sep 19, 2026
14	Victory Hill Capital Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Victory Hill is based in London and was founded in May 2020 by an experienced team of energy financiers, that have spun-out of a large established global project finance banking…” Source: RevenueBase Database · checked Sep 19, 2026
15	Creditnature	Indirect evidence	Oxford, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “CreditNature is a green fintech solution to power nature positive investment and recovery.” Source: RevenueBase Database · checked Sep 19, 2026
16	Planetrics	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “Planetrics (powered by SLR) provides financial institutions with the analytics needed to assess their sustainability impact, limit risks, and find opportunities to support and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Accelar Limited	Indirect evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “Change isn’t new.” Source: RevenueBase Database · checked Sep 19, 2026
18	Globalfields LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Strong evidence “Globalfields is a specialised consultancy, advisory and training service provider on climate and sustainable finance, environmental governance and development.” Source: RevenueBase Database · checked Sep 19, 2026
19	KUMO	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Kumo provides the financial infrastructure that connects carbon projects with institutional capital.” Source: RevenueBase Database · checked Sep 19, 2026
20	Napatree Capital Advisors	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Napatree Capital Advisors help clients to build strong, sustainable ecosystems, resulting in access to quality deal flow, enhanced capital formation capabilities and robust…” Source: RevenueBase Database · checked Sep 19, 2026
21	Conservation Capital	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Conservation Capital is a leader in the rapidly developing field of commercial conservation enterprise and related investment financing.” Source: RevenueBase Database · checked Sep 19, 2026
22	GAIA	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Gaia is a UK-based green technology company that builds online tools for companies and corporations within the environmental space.” Source: RevenueBase Database · checked Sep 19, 2026
23	WEESG	Partial evidence	Cambridge, United KingdomHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Founded by leading specialists in sustainable finance, WeESG's mission is to help organisations get to grips with these challenges.” Source: RevenueBase Database · checked Sep 19, 2026
24	Maycap Advisors	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Project, Export and Structured financing Solutions for Energy & Infrastructure development.” Source: RevenueBase Database · checked Sep 19, 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: environmental finance 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 environmental finance companies.
Partial evidence: Its own public description names part of environmental finance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental finance 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 24 of 124 environmental finance companies based in the United Kingdom

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Environmental finance companies based in the United Kingdom at a glance

As of Sep 19, 2026

42.3%Verified-email coverage

8.5Average contacts per company

1-10Median size (employees)

75.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 124 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 environmental finance 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 “environmental finance 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 environmental finance 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 environmental finance 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, 448 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 19, 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.

Environmental finance companies by metro

Environmental finance companies in London93

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 environmental finance 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 environmental finance companies are there based in the United Kingdom?

RevenueBase identified 124 environmental finance 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?

Sustainable Development Capital, LLP Sdcl, headquartered in London, tops this list with the largest team on record.

Which city has the most environmental finance companies?

London leads with 93 headquartered companies, followed by Bristol (2) and City Of London (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 448 verified decision-maker contacts tracked across these 124 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 19, 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.