Company lists · Data refreshed September 2026

Top 25 Impact investment firms based in the United Kingdom

Name: Impact investment 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 3, 2026 349 companies tracked

RevenueBase identified 349 company matches for impact investment firms associated with the United Kingdom as of September 2026 and tracks 3,833 professional contacts across them, including 1,899 with verified work emails and 289 with mobile numbers. London is the largest hub.

This list covers company matches for impact investment firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 3, 2026 How this list was built

349Companies

3,833Contacts tracked

1,899Verified emails

289Mobile numbers

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The 25 largest impact investment firms based in the United Kingdom

Ranked by team size

Top 25 of 349 company matches for impact investment firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Gresham House	Exact match	London, United KingdomHQ recorded Sep 3, 2026	201-500	223 contacts →
	Exact match “Gresham House is a specialist investor focused on delivering financial returns for clients by investing in the global themes shaping our future.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
2	Ccla Investment Management	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	205 contacts →
	Exact match “Our purpose is to help our clients maximise their impact on society by harnessing the power of investment markets.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
3	Generation Investment Management	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	155 contacts →
	Exact match “Overview Generation was established in 2004 as an independent, private, investment management partnership with offices in London and San Francisco.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
4	Better Society Capital	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	120 contacts →
	Exact match “Better Society Capital is the UK’s leading social impact investor.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
5	Waverton Investment Management	Exact match	London, United KingdomHQ recorded Sep 3, 2026	201-500	94 contacts →
	Exact match “Waverton is an award-winning investment management house dedicated to creating high-quality investment solutions and providing bespoke, personal service for private clients…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
6	The Ingenious Group	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	89 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
7	Agdevco	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	84 contacts →
	Exact match “AgDevCo is a specialist impact investor operating exclusively in the agriculture sector in Africa.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
8	Edentree Investment Management	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	65 contacts →
	Exact match “EdenTree is a sustainable investment manager with a strong heritage.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
9	GSG Impact	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	65 contacts →
	Exact match “GSG Impact builds impact economies.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
10	Development Partners International DPI	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	62 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
11	River Global Investors RGI	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	62 contacts →
	Exact match “River Global Investors is an investment management company offering a range of UK, European, Indian and Global strategies.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
12	Temporis Capital	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	60 contacts →
	Exact match “Temporis was founded in 2011 by three seasoned investment industry professionals.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
13	Apis Partners	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	57 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
14	Lagata	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	52 contacts →
	Exact match “Lagata invest in businesses in growth markets, with a specific expertise in emerging markets and particularly in sub-Saharan Africa.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
15	Greenbank	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	46 contacts →
	Exact match “Tailored investment services, delivered sustainably.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
16	BIG Issue Invest	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	45 contacts →
	Exact match “Big Issue Invest is the investment arm of the Big Issue Group, founded by visionary impact entrepreneurs John Bird and Nigel Kershaw.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
17	Gravis	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	43 contacts →
	Exact match “At Gravis we believe in a long-term approach to investment.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
18	Finance Earth	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	41 contacts →
	Exact match “Finance Earth (formerly Environmental Finance) is a leading environmental impact investment advisor and fund manager, working across the conservation, natural and built asset…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
19	Evenlode Investment	Exact match	Evenlode, United KingdomHQ recorded Sep 3, 2026	11-50	40 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
20	GC Insight	Exact match	Manchester, United KingdomHQ recorded Sep 3, 2026	11-50	40 contacts →
	Exact match “PURPOSE-DRIVEN RESEARCH & ADVICE SERVICES We are a social enterprise, committed to generating social value impacts and helping our clients have a more positive impact on place…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
21	Oxygen House Group	Exact match	Exeter, United KingdomHQ recorded Sep 3, 2026	51-200	40 contacts →
	Exact match “Oxygen House focuses on impact investment in data analytics, education, sustainable property development, renewable energy, and city planning, leveraging patient capital for a…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
22	NET Purpose	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	40 contacts →
	Exact match “Net Purpose is the platform for sustainable and impact investors.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
23	Zouk Capital LLP	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	38 contacts →
	Exact match “Zouk Capital is a fund manager focused on the opportunities emerging at the intersection of infrastructure, technology and sustainability.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
24	Tribe Impact Capital	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	34 contacts →
	Exact match “Tribe is the UK’s first dedicated Impact Wealth Manager and offers discretionary and advisory portfolio management.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
25	Puma Capital Group	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	32 contacts →
	Exact match “Simply put, we invest in relationships to amplify the success of the people, businesses and projects we support.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “impact investment firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 349 impact investment firms based in the United Kingdom

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Impact investment firms based in the United Kingdom at a glance

As of Sep 3, 2026

49.5%Verified-email coverage

7.5%Mobile-number coverage

11.0Average contacts per company

1-10Median size (employees)

71.6%Largest-city concentration · London

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

223

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

14131–60

1,08361–90

67090–180

5180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “impact investment firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,899 professional contacts with verified work emails across the full matched dataset. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Impact investment firms by metro

Impact investment firms in London250

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “impact investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many impact investment firms are there based in the United Kingdom?

RevenueBase identified 349 company matches for impact investment firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Gresham House tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most impact investment firms?

London leads with 250 company records, followed by Edinburgh (6) and Bristol (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,899 professional contacts with verified work emails tracked across these 349 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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 SmartSearch, 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.