Company lists · Data refreshed September 2026

Top 25 Green building investment firms based in London, United Kingdom

Name: Green building investment 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 202 companies tracked

RevenueBase identified 202 green building investment firms headquartered in London, United Kingdom as of September 2026 and tracks 3,104 professional contacts across them, including 1,615 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers green building investment 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

202Companies

3,104Contacts tracked

1,615Verified emails

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The 25 largest green building investment firms based in London, United Kingdom

Ranked by team size

Top 25 of 202 green building investment 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 green building investment 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	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
2	Impax Asset Management	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	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 28, 2026
3	Gresham House	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	227 contacts →
	Indirect 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
4	Octopus Energy Generation	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	153 contacts →
	Strong evidence “At Octopus Energy Generation, we’re building green power for the future, from large-scale solar to onshore and offshore wind, and innovative initiatives like the Fan Club.” Source: RevenueBase Database · checked Sep 28, 2026
5	Schroders Greencoat LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	119 contacts →
	Partial 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
6	Nextenergy Capital	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	83 contacts →
	Partial evidence “NextEnergy Capital was founded in 2007 to become the leading specialist investment and asset manager in the solar sector.” Source: RevenueBase Database · checked Sep 28, 2026
7	Sustainable Development Capital, LLP Sdcl	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	74 contacts →
	Partial 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 28, 2026
8	Bridges Fund Management	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	73 contacts →
	Indirect evidence “Bridges is a specialist private markets investor.” Source: RevenueBase Database · checked Sep 28, 2026
9	CAMCO	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	65 contacts →
	Indirect 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 28, 2026
10	Temporis Capital	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	62 contacts →
	Partial evidence “Temporis was founded in 2011 by three seasoned investment industry professionals.” Source: RevenueBase Database · checked Sep 28, 2026
11	Infracapital	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	50 contacts →
	Partial evidence “Infracapital invests in, builds and manages a diverse range of essential infrastructure to meet the changing needs of society and deliver the significant investment required to…” Source: RevenueBase Database · checked Sep 28, 2026
12	Greenbank	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Partial evidence “Tailored investment services, delivered sustainably.” Source: RevenueBase Database · checked Sep 28, 2026
13	Zouk Capital LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “Zouk Capital is a fund manager focused on the opportunities emerging at the intersection of infrastructure, technology and sustainability.” Source: RevenueBase Database · checked Sep 28, 2026
14	EOS Investment Management Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “EOS Investment Management Group (“EOS IM Group”) is a leading independent international fund management group, specialising in alternative asset sector.” Source: RevenueBase Database · checked Sep 28, 2026
15	Pioneer Point Partners	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “Established in 2008, Pioneer is an independent, sustainable infrastructure investment firm.” Source: RevenueBase Database · checked Sep 28, 2026
16	Topland Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “Our market-leading team of real estate and finance professionals ensures that we deliver on our mission: to invest sustainably, creating social value whilst consistently…” Source: RevenueBase Database · checked Sep 28, 2026
17	Asper Investment Management	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Strong evidence “Asper Investment Management is a leading specialist investment management firm focused on building large-scale sustainable energy platforms.” Source: RevenueBase Database · checked Sep 28, 2026
18	ETF Partners	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Founded in 2005, ETF Partners (The Environmental Technologies Fund) stands as Europe's original venture capital firm dedicated to sustainability and impact investing.” Source: RevenueBase Database · checked Sep 28, 2026
19	Arch Emerging Markets Partners Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “ARCH Emerging Markets Partners Limited (ARCH) was founded in March 2018 and is a specialist investment advisor with deep emerging market, private equity, asset management and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Rivingtonhark	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “RivingtonHark is at the forefront of creating & curating sustainable urban places.” Source: RevenueBase Database · checked Sep 28, 2026
21	Pash Global	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “PASH GLOBAL (“PASH”) is an impact investor in the clean energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
22	Abundance Investment	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Abundance is a leading direct investment platform giving people control over their money.” Source: RevenueBase Database · checked Sep 28, 2026
23	Taranis	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	19 contacts →
	Partial evidence “Taranis is an investment and asset management company owned by the Perenco Group.” Source: RevenueBase Database · checked Sep 28, 2026
24	Hearthstone Investments	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Hearthstone Investments is an investment manager focused entirely on affordable private rented housing in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
25	Glennmont Partners From Nuveen	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	17 contacts →
	Partial evidence “Glennmont Partners is one of Europe’s largest fund managers focusing exclusively on investment in clean energy infrastructure.” 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: green building investment 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 green building investment firms.
Partial evidence: Its own public description names part of green building investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green building investment 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 202 green building investment firms based in London, United Kingdom

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Green building investment firms based in London, United Kingdom at a glance

As of Sep 28, 2026

52.0%Verified-email coverage

15.4Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

114

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 202 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 green building investment 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 “green building investment 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 green building investment 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 green building investment 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, 1,615 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 green building investment 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 green building investment firms are there based in London, United Kingdom?

RevenueBase identified 202 green building investment 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?

ACTIS, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most green building investment firms?

London leads the United Kingdom with 202 headquartered companies, followed by Manchester (11) and Bristol (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 1,615 verified decision-maker contacts tracked across these 202 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.