Company lists · Data refreshed September 2026
Top 25 Private equity firms focused on sustainability companies based in the United Kingdom
RevenueBase identified 641 private equity firms focused on sustainability companies headquartered in the United Kingdom as of September 2026 and tracks 11,229 professional contacts across them, including 5,565 with verified work emails. London is the largest hub.
This list covers private equity firms focused on sustainability 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 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.
The 25 largest private equity firms focused on sustainability companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 537 contacts → | ||||
Indirect evidence “Founded in 1984, Foresight is a leading investment manager in real assets and capital for growth, operating across Europe, Australia, and the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 493 contacts → | ||||
Indirect evidence “Actis is a leading growth market investor in sustainable infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 469 contacts → | ||||
Indirect evidence “We identify the hidden value in companies that are often in challenging or complex situations, but have a strong core offering.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 376 contacts → | ||||
Partial evidence “Coller Capital, founded in 1990, is one of the world's leading investors in the secondary market for private assets – and widely acknowledged as an innovator in secondaries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 331 contacts → | ||||
Indirect evidence “Founded in 1998, Impax is a specialist asset manager investing in the opportunities arising from the transition to a more sustainable global economy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 328 contacts → | ||||
Indirect evidence “AURELIUS is a global alternative investor, distinguished and widely recognised for its operational approach.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 294 contacts → | ||||
Strong evidence “We are a leading pure-play, international private equity firm that has been investing for nearly 50 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 288 contacts → | ||||
Partial evidence “We encourage you to follow Simon Rogerson, Founder & CEO of Octopus Group: We’re entrepreneurs and we’re investors, on a mission to back the people, ideas and industries that will…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 273 contacts → | ||||
Strong evidence “IK Partners (“IK”) is a European private equity firm focused on investments in the Benelux, DACH, France, Nordics and the UK.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 227 contacts → | ||||
Strong evidence “Gresham House is a specialist investor focused on delivering financial returns for clients by investing in the global themes shaping our future.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 214 contacts → | ||||
Strong evidence “Inflexion is a leading European mid-market private equity firm with €20bn under management investing in high growth, entrepreneurial businesses with ambitious management teams and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 158 contacts → | ||||
Strong evidence “Acre is the global market leader for sustainability executive search and recruitment services, exclusively focused on integrating sustainability and catalysing positive change…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 156 contacts → | ||||
Partial evidence “Overview Generation was established in 2004 as an independent, private, investment management partnership with offices in London and San Francisco.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 130 contacts → | ||||
Indirect evidence “Welcome to Walter Scott.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 119 contacts → | ||||
Indirect evidence “Schroders Greencoat is a specialist investment manager dedicated to renewable infrastructure, with over £8.5 billion under management.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 117 contacts → | ||||
Indirect evidence “Sustainable Value Creation Through Partnership We seek to deliver sustainable returns through investment in mature, stable, infrastructure businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 111 contacts → | ||||
Strong evidence “CVC Secondary Partners is a private equity strategy focused on secondary private markets globally.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 109 contacts → | ||||
Strong evidence “TDR is a leading private equity firm with over €16 billion of assets under management and typically invests in strong European companies that are leaders in their markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 109 contacts → | ||||
Indirect evidence “Terra Firma drives value creation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 100 contacts → | ||||
Indirect evidence “Our mission is to positively impact businesses today, for a sustainable tomorrow.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 98 contacts → | ||||
Strong evidence “EMK Capital is a growth-focused private equity firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 98 contacts → | ||||
Strong evidence “Livingbridge is a leading mid-market private equity firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 97 contacts → | ||||
Partial evidence “Stafford Capital Partners ("Stafford") is an independent private markets investment and advisory firm with USD 8.9bn in assets under management and advice for more than 150+…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 91 contacts → | ||||
Partial evidence “Bregal is a global investment platform that partners with and builds exceptional private markets teams.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 89 contacts → | ||||
Strong evidence “Sustainable Advantage partners with Private Equity funds and businesses across the UK, France, and wider Europe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: private equity firms focused on sustainability 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 private equity firms focused on sustainability companies.
- Partial evidence
- Its own public description names part of private equity firms focused on sustainability companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name private equity firms focused on sustainability 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 641 private equity firms focused on sustainability companies based in the United Kingdom
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Private equity firms focused on sustainability companies based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 641 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 private equity firms focused on sustainability 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 “private equity firms focused on sustainability 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 private equity firms focused on sustainability 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 private equity firms focused on sustainability 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, 5,565 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.
Private equity firms focused on sustainability companies by metro
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 private equity firms focused on sustainability 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 private equity firms focused on sustainability companies are there based in the United Kingdom?
RevenueBase identified 641 private equity firms focused on sustainability 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?
Foresight Group, headquartered in London, tops this list with the largest team on record.
Which city has the most private equity firms focused on sustainability companies?
London leads with 481 headquartered companies, followed by Edinburgh (13) and Belfast (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 5,565 verified decision-maker contacts tracked across these 641 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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Private equity firms focused on sustainability companies by geography
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- Private equity firms focused on sustainability companies based in Hamburg, Germany
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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.
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