Company lists · Data refreshed October 2026

Top 25 Alternative investment firms based in the United Kingdom

Name: Alternative 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 Oct 1, 2026 816 companies tracked

RevenueBase identified 816 alternative investment firms headquartered in the United Kingdom as of October 2026 and tracks 57,719 professional contacts across them, including 27,507 with verified work emails. London is the largest hub.

This list covers alternative 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 October 1, 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 Oct 1, 2026 86% judged on-target in blind review

816Companies

57,719Contacts tracked

27,507Verified emails

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The 25 largest alternative investment firms based in the United Kingdom

Ranked by team size

Top 25 of 816 alternative investment firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Oct 1, 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	Fidelity International	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	5,001-10,000	9,398 contacts →
	Partial evidence “Fidelity International offers investment solutions and services and retirement expertise to more than 2.9 million customers globally.” Source: RevenueBase Database · checked Oct 1, 2026
2	Janus Henderson Investors	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	1,001-5,000	3,000 contacts →
	Partial evidence “At Janus Henderson, we are investors – we help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class…” Source: RevenueBase Database · checked Oct 1, 2026
3	MAN Group	Strong evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
4	M&g Investments	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	1,001-5,000	1,774 contacts →
	Partial evidence “M&G Investments is a global asset manager.” Source: RevenueBase Database · checked Oct 1, 2026
5	Baillie Gifford	Partial evidence	Edinburgh, United KingdomHQ checked Oct 1, 2026	1,001-5,000	1,549 contacts →
	Partial evidence “We are an independent investment manager founded over a century ago in Edinburgh, owned and run by 59 partners.” Source: RevenueBase Database · checked Oct 1, 2026
6	Aviva Investors	Indirect evidence	London, United KingdomHQ checked Oct 1, 2026	1,001-5,000	1,320 contacts →
	Indirect evidence “Welcome to Aviva Investors.” Source: RevenueBase Database · checked Oct 1, 2026
7	Jupiter Asset Management	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	501-1,000	942 contacts →
	Partial evidence “Since Jupiter was established in 1985, we have sought to make a positive difference for our clients by helping them achieve their long-term investment objectives through high…” Source: RevenueBase Database · checked Oct 1, 2026
8	ICG	Partial evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
9	Marshall Wace	Strong evidence	London, United KingdomHQ checked Oct 1, 2026	501-1,000	723 contacts →
	Strong evidence “Marshall Wace is a leading provider of alternative investment solutions.” Source: RevenueBase Database · checked Oct 1, 2026
10	Royal London Asset Management	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	201-500	619 contacts →
	Partial evidence “Content suitable for investment professionals only.” Source: RevenueBase Database · checked Oct 1, 2026
11	Quilter Cheviot	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	501-1,000	606 contacts →
	Partial evidence “Whether you want to grow your wealth, generate an income, or leave a legacy to your loved ones, it pays to have a trusted Investment Manager by your side.” Source: RevenueBase Database · checked Oct 1, 2026
12	Invesco Emea	Indirect evidence	Henley-On-Thames, United KingdomHQ checked Oct 1, 2026	1,001-5,000	588 contacts →
	Indirect evidence “At Invesco, we have an established tradition of long-term investing.” Source: RevenueBase Database · checked Oct 1, 2026
13	Bridgepoint Group	Indirect evidence	West End, United KingdomHQ checked Oct 1, 2026	201-500	553 contacts →
	Indirect evidence “Bridgepoint Group is one of the world's leading mid-market investors, specialising in private equity, infrastructure, credit, secondaries and private wealth.” Source: RevenueBase Database · checked Oct 1, 2026
14	Pantheon	Indirect evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
15	Partners Capital	Partial evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
16	Federated Hermes Limited	Indirect evidence	London, United KingdomHQ checked Oct 1, 2026	501-1,000	451 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 Oct 1, 2026
17	7im	Partial evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
18	LMR Partners	Strong evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
19	Coller Capital	Indirect evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
20	Rokos Capital Management	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	201-500	369 contacts →
	Partial evidence “RCM is a global multi-asset investment firm, focused on the pursuit of high, durable risk-adjusted returns for our investors.” Source: RevenueBase Database · checked Oct 1, 2026
21	BC Partners	Partial evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 2026
22	Epic Investment Partners	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	201-500	301 contacts →
	Partial evidence “EPIC Investment Partners is an independent investment, administration and advisory firm.” Source: RevenueBase Database · checked Oct 1, 2026
23	Saltus	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	501-1,000	284 contacts →
	Partial evidence “Saltus is an independently owned financial planning and investment management company.” Source: RevenueBase Database · checked Oct 1, 2026
24	Hayfin Capital Management LLP	Partial evidence	London, United KingdomHQ checked Oct 1, 2026	201-500	277 contacts →
	Partial evidence “Hayfin Capital Management is a leading alternative asset management firm.” Source: RevenueBase Database · checked Oct 1, 2026
25	M&g Real Estate	Indirect evidence	London, United KingdomHQ checked Oct 1, 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 Oct 1, 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 816 alternative investment firms based in the United Kingdom

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Alternative investment firms based in the United Kingdom at a glance

As of Oct 1, 2026

47.7%Verified-email coverage

70.7Average contacts per company

11-50Median size (employees)

72.8%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

393

11-50

266

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 816 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 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 the 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 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, 27,507 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 October 1, 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.

Alternative investment firms by metro

Alternative investment firms in London594

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 the United Kingdom?

RevenueBase identified 816 alternative investment firms headquartered in the United Kingdom as of October 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?

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

Which city has the most alternative investment firms?

London leads with 594 headquartered companies, followed by Edinburgh (16) and London London (9).

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 27,507 verified decision-maker contacts tracked across these 816 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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.