Company lists · Data refreshed September 2026

Top 25 Impact-focused private equity firms based in London, United Kingdom

Name: Impact-focused private equity firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 620 companies tracked

RevenueBase identified 620 impact-focused private equity firms headquartered in London, United Kingdom as of September 2026 and tracks 11,270 professional contacts across them, including 5,326 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers impact-focused private equity firms headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

620Companies

11,270Contacts tracked

5,326Verified emails

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The 25 largest impact-focused private equity firms based in London, United Kingdom

Ranked by team size

Top 25 of 620 impact-focused private equity firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to impact-focused private equity firms: 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	Foresight Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	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 28, 2026
2	ACTIS	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	493 contacts →
	Indirect evidence “Actis is a leading growth market investor in sustainable infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
3	Privet Capital LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	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 28, 2026
4	Impax Asset Management	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	331 contacts →
	Partial 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 28, 2026
5	Aurelius	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	328 contacts →
	Indirect evidence “AURELIUS is a global alternative investor, distinguished and widely recognised for its operational approach.” Source: RevenueBase Database · checked Sep 28, 2026
6	Octopus	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	288 contacts →
	Indirect 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 28, 2026
7	Triple Point	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	258 contacts →
	Indirect evidence “Triple Point believes in the power of connections.” Source: RevenueBase Database · checked Sep 28, 2026
8	Gresham House	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	227 contacts →
	Partial 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 28, 2026
9	Inflexion	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	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 28, 2026
10	Rede Partners	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	163 contacts →
	Partial evidence “Rede Partners is the private markets specialist, partnering with leading GPs to deliver integrated, multi-disciplinary services across primary fundraising, capital solutions and…” Source: RevenueBase Database · checked Sep 28, 2026
11	Generation Investment Management	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	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 28, 2026
12	Gemcorp Capital	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	150 contacts →
	Strong evidence “Gemcorp Capital is a privately owned investment group focused on unleashing the potential in emerging markets.” Source: RevenueBase Database · checked Sep 28, 2026
13	Lightrock	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	141 contacts →
	Indirect evidence “Lightrock is a global investment platform supporting the growth of technology-enabled companies.” Source: RevenueBase Database · checked Sep 28, 2026
14	Schroders Greencoat LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	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 28, 2026
15	Time Investments	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	118 contacts →
	Partial evidence “TIME Investments is a specialist investment manager focused on delivering long-term investments that seek consistent returns.” Source: RevenueBase Database · checked Sep 28, 2026
16	Better Society Capital	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	116 contacts →
	Partial evidence “Better Society Capital is the UK’s leading social impact investor.” Source: RevenueBase Database · checked Sep 28, 2026
17	Tigbourne Capital LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	116 contacts →
	Strong evidence “Tigbourne Capital is a distinguished private equity firm founded in 2011, headquartered in the UK and boasting a robust footprint across the USA, Europe, and the Arabian Gulf.” Source: RevenueBase Database · checked Sep 28, 2026
18	Terra Firma	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	109 contacts →
	Indirect evidence “Terra Firma drives value creation.” Source: RevenueBase Database · checked Sep 28, 2026
19	Livingbridge	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	98 contacts →
	Strong evidence “Livingbridge is a leading mid-market private equity firm.” Source: RevenueBase Database · checked Sep 28, 2026
20	Octopus Ventures	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	96 contacts →
	Indirect evidence “Octopus Ventures, part of Octopus Group, is one of the largest and most active venture capital investors in the UK and Europe.” Source: RevenueBase Database · checked Sep 28, 2026
21	Bregal Investments	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	91 contacts →
	Partial evidence “Bregal is a global investment platform that partners with and builds exceptional private markets teams.” Source: RevenueBase Database · checked Sep 28, 2026
22	Arcus Infrastructure Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	91 contacts →
	Partial evidence “Founded in 2009, Arcus is an independent infrastructure fund manager with a focus on the European mid-market.” Source: RevenueBase Database · checked Sep 28, 2026
23	The Ingenious Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	90 contacts →
	Partial evidence “We believe that our investments should deliver not only for our investors but also create a positive impact for the communities in which we operate.” Source: RevenueBase Database · checked Sep 28, 2026
24	Agdevco	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Partial evidence “AgDevCo is a specialist impact investor operating exclusively in the agriculture sector in Africa.” Source: RevenueBase Database · checked Sep 28, 2026
25	Social Investment Business	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence “We finance social change.” Source: RevenueBase Database · checked Sep 28, 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: impact-focused private equity firms. 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 impact-focused private equity firms.
Partial evidence: Its own public description names part of impact-focused private equity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name impact-focused private equity firms. 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 620 impact-focused private equity firms based in London, United Kingdom

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Impact-focused private equity firms based in London, United Kingdom at a glance

As of Sep 28, 2026

47.3%Verified-email coverage

18.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

352

11-50

191

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 620 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 impact-focused private equity firms, 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 London, United Kingdom whose own description of what they do matches “impact-focused private equity firms”. 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 impact-focused private equity firms), 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 impact-focused private equity firms, and records with no verified work email. Companies headquartered outside London 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, 5,326 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 28, 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.

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 impact-focused private equity firms, 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 impact-focused private equity firms are there based in London, United Kingdom?

RevenueBase identified 620 impact-focused private equity firms headquartered in London, 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 in the United Kingdom has the most impact-focused private equity firms?

London leads the United Kingdom with 620 headquartered companies, followed by Bristol (8) and Edinburgh (8).

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 5,326 verified decision-maker contacts tracked across these 620 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 28, 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.