Company lists · Data refreshed September 2026

Top 25 Impact investing companies based in the United Kingdom

RevenueBase identified 272 company matches for impact investing companies associated with the United Kingdom as of September 2026 and tracks 3,337 professional contacts across them, including 1,682 with verified work emails. London is the largest hub.

This list covers company matches for impact investing companies 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 20, 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 20, 2026 How this list was built
272Companies
3,337Contacts tracked
1,682Verified emails
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The 25 largest impact investing companies based in the United Kingdom

Ranked by team size
Top 25 of 272 company matches for impact investing companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500227 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 20, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200156 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 20, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200141 contacts →

Exact match

“Lightrock is a global investment platform supporting the growth of technology-enabled companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200116 contacts →

Exact match

“Better Society Capital is the UK’s leading social impact investor.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20090 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 20, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20084 contacts →

Exact match

“AgDevCo is a specialist impact investor operating exclusively in the agriculture sector in Africa.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5073 contacts →

Exact match

“Bridges is a specialist private markets investor.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20068 contacts →

Exact match

“ThirdWay Partners operates as an impact investment and advisory firm focused on creating inclusive sustainable development and impact.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20067 contacts →

Exact match

“EdenTree is a sustainable investment manager with a strong heritage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5065 contacts →

Exact match

“Camco is a climate and impact fund manager, leading the transition to a prosperous net zero future in emerging markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5063 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 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20063 contacts →

Exact match

“RIVER GLOBAL HOLDINGS (RGH) WAS ACQUIRED BY LIONTRUST ON 30 JUNE 2026.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5062 contacts →

Exact match

“Temporis was founded in 2011 by three seasoned investment industry professionals.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5053 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 20, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5046 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 20, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20045 contacts →

Exact match

“Tailored investment services, delivered sustainably.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchMayfair, United KingdomHQ recorded Sep 20, 202651-20043 contacts →

Exact match

“At Gravis we believe in a long-term approach to investment.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchEvenlode, United KingdomHQ recorded Sep 20, 202611-5041 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 20, 2026 · View company records in RevenueBase
19Exact matchExeter, United KingdomHQ recorded Sep 20, 202651-20040 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 20, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5040 contacts →

Exact match

“Net Purpose is the platform for sustainable and impact investors.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5039 contacts →

Exact match

“About Founded in 2007, Red Ribbon Asset Management Plc is an Indo-British financial services group building on the legacy of historical, cultural and socio-economic ties between…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5039 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 20, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5034 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 20, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5032 contacts →

Exact match

“Asper Investment Management is a leading specialist investment management firm focused on building large-scale sustainable energy platforms.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20032 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 20, 2026 · View company records in RevenueBase

Showing 25 of 272 impact investing companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,682 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Impact investing companies based in the United Kingdom at a glance

As of Sep 20, 2026
50.4%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
74.3%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
165
11-50
80
51-200
18
201-500
7
1,001-5,000
1

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 272 companies.

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 investing companies” 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 1,682 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 20, 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.

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 investing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many impact investing companies are there based in the United Kingdom?

RevenueBase identified 272 company matches for impact investing companies 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 investing companies?

London leads with 202 company records, followed by Bristol (4) and Edinburgh (4).

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 1,682 professional contacts with verified work emails tracked across these 272 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 20, 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.