Company lists · Data refreshed September 2026
Top 25 Investment firms based in London, United Kingdom
RevenueBase identified 987 investment firms headquartered in London, United Kingdom as of September 2026 and tracks 39,214 professional contacts across them, including 18,519 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers 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 14, 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 investment firms based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,000 contacts → | ||||
Strong 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,096 contacts → | ||||
Indirect evidence “Meet the people behind your future.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,927 contacts → | ||||
Indirect evidence “RBC Brewin Dolphin is one of the UK and Ireland’s leading wealth managers and traces its origins back to 1762.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,320 contacts → | ||||
Indirect evidence “Welcome to Aviva Investors.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 942 contacts → | ||||
Strong 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 865 contacts → | ||||
Strong evidence “Charles Stanley, part of Raymond James Wealth Management, is one of the UK’s leading Wealth Management firms, providing bespoke investment portfolios and tailored financial advice…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 721 contacts → | ||||
Indirect evidence “We are now Lloyds Wealth.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 606 contacts → | ||||
Strong 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 589 contacts → | ||||
Indirect evidence “At Chase de Vere, we believe the only worthwhile advice is independent advice.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 481 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 403 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 384 contacts → | ||||
Indirect evidence “Clearwater is an independent corporate finance house focused on unlocking the latent potential in every business.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 346 contacts → | ||||
Indirect evidence “We’re atomos and we’re here to make your dreams and financial ambitions a reality.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 311 contacts → | ||||
Indirect evidence “Killik & Co is an independently owned, award-winning wealth manager, advising clients on how to save, plan and invest for their families for over 35 years.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 311 contacts → | ||||
Indirect evidence “By simplifying the financial challenges that investors face, JM Finn aims to protect and nurture wealth across generations.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 301 contacts → | ||||
Strong evidence “EPIC Investment Partners is an independent investment, administration and advisory firm.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 284 contacts → | ||||
Strong evidence “Saltus is an independently owned financial planning and investment management company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 248 contacts → | ||||
Strong evidence “Investindustrial is a leading European investment firm, founded in 1990, with €17 billion of raised fund capital.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 244 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 232 contacts → | ||||
Indirect evidence “At Kingswood we believe everyone should have access to financial advice and be able to Protect and Grow their wealth.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 231 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 221 contacts → | ||||
Strong evidence “The international subsidiaries of Kotak manage a wide range of India investment funds through which overseas investors can invest in India.” Source: RevenueBase Database · checked Sep 14, 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: 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 investment firms.
- Partial evidence
- Its own public description names part of investment firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name 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 987 investment firms based in London, United Kingdom
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Investment firms based in London, United Kingdom at a glance
As of Sep 14, 2026Companies by employee count
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 987 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 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 “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 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 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, 18,519 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 14, 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.
Investment firms by metro in the United Kingdom
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 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 investment firms are there based in London, United Kingdom?
RevenueBase identified 987 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?
Janus Henderson Investors, headquartered in London, tops this list with the largest team on record.
Which city in the United Kingdom has the most investment firms?
London leads the United Kingdom with 987 headquartered companies, followed by Edinburgh (32) and Manchester (30).
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 18,519 verified decision-maker contacts tracked across these 987 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 14, 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.