Company lists · Data refreshed September 2026

Top 25 Alternative investment firms based in London, United Kingdom

Name: Alternative 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 18, 2026 444 companies tracked

RevenueBase identified 444 alternative investment firms headquartered in London, United Kingdom as of September 2026 and tracks 20,697 professional contacts across them, including 9,815 with verified work emails and 2,003 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers alternative 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 18, 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 18, 2026 86% judged on-target in blind review

444Companies

20,697Contacts tracked

9,815Verified emails

2,003Mobile numbers

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The 25 largest alternative investment firms based in London, United Kingdom

Ranked by team size

Top 25 of 444 alternative investment firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to alternative 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	MAN Group	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	2,395 contacts →
	Strong evidence “Man Group is a global alternative investment management firm focused on pursuing outperformance for sophisticated clients via our Systematic, Discretionary and Solutions offerings.” Source: RevenueBase Database · checked Sep 18, 2026
2	M&g Investments	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	1,774 contacts →
	Partial evidence “M&G Investments is a global asset manager.” Source: RevenueBase Database · checked Sep 18, 2026
3	ICG	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	501-1,000	797 contacts →
	Partial evidence “ICG (LSE: ICG) is a global alternative asset manager with $126bn* in AUM and more than three decades of experience generating attractive returns.” Source: RevenueBase Database · checked Sep 18, 2026
4	Marshall Wace	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	501-1,000	723 contacts →
	Strong evidence “Marshall Wace is a leading provider of alternative investment solutions.” Source: RevenueBase Database · checked Sep 18, 2026
5	Pantheon	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	547 contacts →
	Indirect evidence “Pantheon has been at the forefront of private markets investing for more than 40 years, earning a reputation for providing innovative solutions covering the full lifecycle of…” Source: RevenueBase Database · checked Sep 18, 2026
6	Partners Capital	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	481 contacts →
	Partial evidence “Founded in 2001, Partners Capital is a global investment office acting for distinguished endowments and foundations, senior investment professionals and prominent families across…” Source: RevenueBase Database · checked Sep 18, 2026
7	7im	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	403 contacts →
	Partial evidence “Seven Investment Management (7IM) is an investment management business that helps individuals, their families and advisers to manage their capital to meet their financial needs…” Source: RevenueBase Database · checked Sep 18, 2026
8	LMR Partners	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	378 contacts →
	Strong evidence “LMR Partners is a global alternative investment manager that was founded in November 2009.” Source: RevenueBase Database · checked Sep 18, 2026
9	Coller Capital	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	376 contacts →
	Indirect evidence “Coller Capital, founded in 1990, is one of the world's leading investors in the secondary market for private assets – and widely acknowledged as an innovator in secondaries.” Source: RevenueBase Database · checked Sep 18, 2026
10	BC Partners	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	333 contacts →
	Partial evidence “BC Partners is an international investment firm that offers select, focused investment strategies designed to complement each other and create synergies that benefit our investors.” Source: RevenueBase Database · checked Sep 18, 2026
11	Epic Investment Partners	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	301 contacts →
	Partial evidence “EPIC Investment Partners is an independent investment, administration and advisory firm.” Source: RevenueBase Database · checked Sep 18, 2026
12	Hayfin Capital Management LLP	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	277 contacts →
	Partial evidence “Hayfin Capital Management is a leading alternative asset management firm.” Source: RevenueBase Database · checked Sep 18, 2026
13	M&g Real Estate	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	265 contacts →
	Indirect evidence “M&G Real Estate is recognised as one of the world’s leading property investors.” Source: RevenueBase Database · checked Sep 18, 2026
14	Fisher Investments UK	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	244 contacts →
	Partial evidence “Fisher Investments UK is a private investment advice and management company, offering the discretionary investment management services of our US-based parent company, Fisher…” Source: RevenueBase Database · checked Sep 18, 2026
15	Fisher Investments Europe Limited	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	231 contacts →
	Partial evidence “Fisher Investments Europe Limited, which trades as Fisher Investments UK, is authorised and regulated by the UK Financial Conduct Authority (FCA Number 191609) and is registered…” Source: RevenueBase Database · checked Sep 18, 2026
16	TT International	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	231 contacts →
	Partial evidence “TT International is an alpha-driven specialist investment manager, with a long and successful history of investing for sophisticated institutional clients around the world…” Source: RevenueBase Database · checked Sep 18, 2026
17	ISAM	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	219 contacts →
	Indirect evidence “iSAM is comprised of iSAM Funds and iSAM Securities.” Source: RevenueBase Database · checked Sep 18, 2026
18	Cheyne Capital	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	192 contacts →
	Strong evidence “Cheyne Capital is a London-based alternative investment fund manager which was founded in by Jonathan Lourie (CEO & CIO) and Stuart Fiertz (President) after working together at…” Source: RevenueBase Database · checked Sep 18, 2026
19	T. Rowe Price UK	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	5,001-10,000	191 contacts →
	Indirect evidence “T.” Source: RevenueBase Database · checked Sep 18, 2026
20	Mark Capital Management	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	127 contacts →
	Partial evidence “MARK Capital Management is an independent real estate investment and asset manager that has managed over €20bn of private real estate since the firm’s founding in 2004.” Source: RevenueBase Database · checked Sep 18, 2026
21	Record	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	118 contacts →
	Indirect evidence “Record Financial Group is a leading specialist currency and asset manager with $114.6 billion in Assets Under Management Equivalents (as of 31st March 2026) for institutional…” Source: RevenueBase Database · checked Sep 18, 2026
22	Cain International	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	98 contacts →
	Partial evidence “Cain International ('Cain') is a privately held investment firm focused on real estate and business opportunities that shape the fabric of global gateway cities.” Source: RevenueBase Database · checked Sep 18, 2026
23	Columbia Threadneedle Investments Emea Apac	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	96 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 18, 2026
24	Waverton Investment Management	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	92 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 18, 2026
25	Lansdowne Partners	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	89 contacts →
	Indirect evidence “Founded in 1998, Lansdowne Partners manages assets for some of the world’s largest and most sophisticated investors.” Source: RevenueBase Database · checked Sep 18, 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: alternative 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 alternative investment firms.
Partial evidence: Its own public description names part of alternative investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alternative 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 444 alternative investment firms based in London, United Kingdom

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Alternative investment firms based in London, United Kingdom at a glance

As of Sep 18, 2026

47.4%Verified-email coverage

9.7%Mobile-number coverage

46.6Average contacts per company

1-10Median size (employees)

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

230

11-50

135

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 21.0d

7,6020–30

2,04831–60

6361–90

1690–180

86180+

Company record updated

Median 70.0d

00–30

7,86931–60

8,36161–90

3,14190–180

1,326180+

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 alternative 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 “alternative 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 alternative 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 alternative 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, 9,815 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 18, 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 alternative 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 alternative investment firms are there based in London, United Kingdom?

RevenueBase identified 444 alternative 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?

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

Which city in the United Kingdom has the most alternative investment firms?

London leads the United Kingdom with 444 headquartered companies, followed by Edinburgh (10) and London London (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 9,815 verified decision-maker contacts tracked across these 444 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 18, 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.