Company lists · Data refreshed September 2026
Top 25 Esg investment firms based in the United Kingdom
RevenueBase identified 121 esg investment firms headquartered in the United Kingdom as of September 2026 and tracks 4,888 professional contacts across them, including 2,397 with verified work emails and 316 with mobile numbers. London is the largest hub.
This list covers esg investment 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 2, 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.
The 25 largest esg investment firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 949 contacts → | ||||
Partial evidence “Morningstar Sustainalytics data and insights allow investors and companies to spend less time grappling with ESG and climate, and more time making the most of it.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 641 contacts → | ||||
Indirect evidence “The La Française group offers conviction-based management that combines performance targets and sustainability objectives across all asset classes.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 456 contacts → | ||||
Indirect 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 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | 322 contacts → | ||||
Partial evidence “The Principles for Responsible Investment (PRI) is an investor initiative in partnership with UNEP FI and the UN Global Compact.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 319 contacts → | ||||
Partial evidence “Mirova is a global asset management company dedicated to sustainable investing and an affiliate of Natixis Investment Managers.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 223 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 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 155 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 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 110 contacts → | ||||
Partial evidence “ShareAction is an independent charity and an expert on responsible investment.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 99 contacts → | ||||
Partial evidence “At Columbia Threadneedle Investments, we invest to make a difference in your world, and the wider world.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 98 contacts → | ||||
Indirect evidence “Our mission is to positively impact businesses today, for a sustainable tomorrow.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 94 contacts → | ||||
Partial 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 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | 89 contacts → | ||||
Partial 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 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 65 contacts → | ||||
Partial evidence “EdenTree is a sustainable investment manager with a strong heritage.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 62 contacts → | ||||
Partial evidence “River Global Investors is an investment management company offering a range of UK, European, Indian and Global strategies.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 contacts → | ||||
Partial evidence “We're Castlefield - an award-winning, employee-owned investment management and financial planning group, recognised for being at the forefront of ethical investing since 2002.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | 46 contacts → | ||||
Partial evidence “Tailored investment services, delivered sustainably.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 43 contacts → | ||||
Partial evidence “At Gravis we believe in a long-term approach to investment.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 42 contacts → | ||||
Indirect evidence “Our aim is to protect investors’ capital and increase its value over the long-term.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 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 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | 40 contacts → | ||||
Strong evidence “Earth Active is an award-winning consultancy with a globally experienced team of bespoke ESG advisors and expert specialists that provide investment and risk due diligence in…” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | 40 contacts → | ||||
Indirect evidence “Net Purpose is the platform for sustainable and impact investors.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 39 contacts → | ||||
Partial evidence “Impact Cubed is a specialist investment advisor and data provider with the mission of aligning the allocation of capital with a sustainable future.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | 36 contacts → | ||||
Partial evidence “Osmosis’ mission since 2009 has been to become the world’s leading dedicated sustainable asset manager, delivering client-focused investment solutions across multiple asset…” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | 34 contacts → | ||||
Indirect evidence “Tribe is the UK’s first dedicated Impact Wealth Manager and offers discretionary and advisory portfolio management.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | 34 contacts → | ||||
Indirect evidence “Lathe & Co Wealth Advisers was established in 2017, with the sole focus of exceeding client expectations and offering simple and attainable financial planning to everyone.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
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: esg 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 esg investment firms.
- Partial evidence
- Its own public description names part of esg investment firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name esg 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 121 esg investment firms based in the United Kingdom
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Esg investment firms based in the United Kingdom at a glance
As of Sep 2, 2026Companies by employee count
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 esg 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 the United Kingdom whose own description of what they do matches “esg 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 esg 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 esg investment 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, 2,397 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 2, 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.
Esg investment firms by metro
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 esg 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 esg investment firms are there based in the United Kingdom?
RevenueBase identified 121 esg investment 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?
Morningstar Sustainalytics, headquartered in London, tops this list with the largest team on record.
Which city has the most esg investment firms?
London leads with 83 headquartered companies, followed by Edinburgh (4) and London London (2).
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 2,397 verified decision-maker contacts tracked across these 121 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 2, 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.