Company lists · Data refreshed September 2026

Top 25 Impact investing firms based in the United Kingdom

Name: Impact investing firms 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 331 companies tracked

RevenueBase identified 331 impact investing firms headquartered in the United Kingdom as of September 2026 and tracks 4,429 professional contacts across them, including 2,367 with verified work emails. London is the largest hub.

This list covers impact investing firms 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

331Companies

4,429Contacts tracked

2,367Verified emails

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The 25 largest impact investing firms based in the United Kingdom

Ranked by team size

Top 25 of 331 impact investing firms 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 impact investing 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	Federated Hermes Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	451 contacts →
	Partial evidence “Federated Hermes is guided by the conviction that responsible investing is the best way to create long-term wealth.” Source: RevenueBase Database · checked Sep 19, 2026
2	Gresham House	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
3	Ccla Investment Management	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	207 contacts →
	Partial evidence “Our purpose is to help our clients maximise their impact on society by harnessing the power of investment markets.” Source: RevenueBase Database · checked Sep 19, 2026
4	Generation Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	156 contacts →
	Indirect 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 19, 2026
5	Lightrock	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
6	Better Society Capital	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	116 contacts →
	Partial evidence “Better Society Capital is the UK’s leading social impact investor.” Source: RevenueBase Database · checked Sep 19, 2026
7	Waverton Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	92 contacts →
	Indirect evidence “Waverton is an award-winning investment management house dedicated to creating high-quality investment solutions and providing bespoke, personal service for private clients…” Source: RevenueBase Database · checked Sep 19, 2026
8	The Ingenious Group	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
9	Agdevco	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
10	Sustainable Development Capital, LLP Sdcl	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	74 contacts →
	Indirect 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
11	Legal & General Investment Management Lgim	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	74 contacts →
	Indirect evidence “We are aware that a small number of investors have been targeted by fraudsters using the LGIM and L&G brands to promote fake funds and investment products.” Source: RevenueBase Database · checked Sep 19, 2026
12	Bridges Fund Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	73 contacts →
	Indirect evidence “Bridges is a specialist private markets investor.” Source: RevenueBase Database · checked Sep 19, 2026
13	Thirdway Partners	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	68 contacts →
	Partial 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
14	Edentree Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “EdenTree is a sustainable investment manager with a strong heritage.” Source: RevenueBase Database · checked Sep 19, 2026
15	Climate Asset Management	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	66 contacts →
	Indirect evidence “Climate Asset Management was formed in 2020 as a joint venture of HSBC Asset Management and Pollination, with the ambition to grow the world’s leading asset management company in…” Source: RevenueBase Database · checked Sep 19, 2026
16	CAMCO	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	65 contacts →
	Partial evidence “Camco is a climate and impact fund manager, leading the transition to a prosperous net zero future in emerging markets.” Source: RevenueBase Database · checked Sep 19, 2026
17	Development Partners International DPI	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	63 contacts →
	Partial evidence “DPI is an Africa focused private investment firm with US$3.1 billion in assets under management and co-investments across three funds, targeting high growth, impact-driven, and…” Source: RevenueBase Database · checked Sep 19, 2026
18	River Global Investors RGI	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	63 contacts →
	Indirect evidence “RIVER GLOBAL HOLDINGS (RGH) WAS ACQUIRED BY LIONTRUST ON 30 JUNE 2026.” Source: RevenueBase Database · checked Sep 19, 2026
19	Temporis Capital	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	62 contacts →
	Indirect evidence “Temporis was founded in 2011 by three seasoned investment industry professionals.” Source: RevenueBase Database · checked Sep 19, 2026
20	Apis Partners	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	57 contacts →
	Partial evidence “Headquartered in London, the Apis Group (“Apis”) is a private equity firm investing in tech-enabled financial infrastructure and services across Europe and growth markets, with…” Source: RevenueBase Database · checked Sep 19, 2026
21	Lagata	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “Lagata invest in businesses in growth markets, with a specific expertise in emerging markets and particularly in sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 19, 2026
22	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
23	Gravis	Indirect evidence	Mayfair, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “At Gravis we believe in a long-term approach to investment.” Source: RevenueBase Database · checked Sep 19, 2026
24	FIG	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	42 contacts →
	Partial evidence “Fig provides a pragmatic new approach to supporting and investing in high-growth early-stage companies.” Source: RevenueBase Database · checked Sep 19, 2026
25	Evenlode Investment	Partial evidence	Evenlode, United KingdomHQ checked Sep 19, 2026	11-50	41 contacts →
	Partial evidence “Evenlode Investment Management is an employee-owned, North Cotswolds based investment company, with a sole focus on investing in the shares of high-quality companies over the long…” 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: impact investing 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 investing firms.
Partial evidence: Its own public description names part of impact investing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name impact investing 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 331 impact investing firms based in the United Kingdom

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Impact investing firms based in the United Kingdom at a glance

As of Sep 19, 2026

53.4%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

74.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

207

11-50

51-200

201-500

501-1,000

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 331 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 investing 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 the United Kingdom whose own description of what they do matches “impact investing 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 investing 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 investing firms, 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, 2,367 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.

Impact investing firms by metro

Impact investing firms in London248

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 investing 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 investing firms are there based in the United Kingdom?

RevenueBase identified 331 impact investing firms 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?

Federated Hermes Limited, headquartered in London, tops this list with the largest team on record.

Which city has the most impact investing firms?

London leads with 248 headquartered companies, followed by Edinburgh (6) and Bristol (4).

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 2,367 verified decision-maker contacts tracked across these 331 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.