Company lists · Data refreshed September 2026
Top 25 Middle market private equity firms based in the United Kingdom
RevenueBase identified 807 middle market private equity firms headquartered in the United Kingdom as of September 2026 and tracks 14,757 professional contacts across them, including 7,762 with verified work emails and 1,250 with mobile numbers. London is the largest hub.
This list covers middle market private equity 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 middle market private equity firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 797 | ||||
“ICG (LSE: ICG) is a global alternative asset manager with $126bn* in AUM and more than three decades of experience generating attractive returns.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | PermiraIndirect evidence | 629 | |||
“Permira is a global investment firm that backs successful businesses with growth ambitions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 553 | ||||
“Bridgepoint Group is one of the world's leading mid-market investors, specialising in private equity, infrastructure, credit, secondaries and private wealth.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 536 | ||||
“For over 40 years, LDC has been the trusted investment partner for ambitious management teams.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Privet Capital LLPIndirect evidence | 469 | |||
“We identify the hidden value in companies that are often in challenging or complex situations, but have a strong core offering.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 376 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 337 | ||||
“3i is a leading international investment company with two complementary businesses, Private Equity and Infrastructure, specialising in core investment markets in northern Europe…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 333 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 328 | ||||
“AURELIUS is a global alternative investor, distinguished and widely recognised for its operational approach.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 301 | ||||
“EPIC Investment Partners is an independent investment, administration and advisory firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 294 | ||||
“We are a leading pure-play, international private equity firm that has been investing for nearly 50 years.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 277 | ||||
“Hayfin Capital Management is a leading alternative asset management firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 276 | ||||
“BGF is the most active and influential investor in small and mid-sized businesses in the UK.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 273 | ||||
“IK Partners (“IK”) is a European private equity firm focused on investments in the Benelux, DACH, France, Nordics and the UK.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 258 | ||||
“Triple Point believes in the power of connections.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 248 | ||||
“Investindustrial is a leading European investment firm, founded in 1990, with €17 billion of raised fund capital.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 214 | ||||
“Inflexion is a leading European mid-market private equity firm with €20bn under management investing in high growth, entrepreneurial businesses with ambitious management teams and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Vitruvian PartnersIndirect evidence | 187 | |||
“Vitruvian Partners is an international investment firm that supports the most ambitious and talented entrepreneurs and higher growth companies to achieve their goals.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 153 | ||||
“Park Square Capital is one of Europe’s leading private credit investors, providing mid-market direct loans, large-sized senior debt and junior capital solutions to high-quality…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 130 | ||||
“Welcome to Walter Scott.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 111 | ||||
“CVC Secondary Partners is a private equity strategy focused on secondary private markets globally.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | TDR CapitalStrong evidence | 109 | |||
“TDR is a leading private equity firm with over €16 billion of assets under management and typically invests in strong European companies that are leaders in their markets.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 109 | ||||
“Terra Firma drives value creation.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 98 | ||||
“EMK Capital is a growth-focused private equity firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 98 | ||||
“Livingbridge is a leading mid-market private equity firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 807 middle market private equity firms based in the United Kingdom
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Middle market private equity firms based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 middle market private equity firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “middle market private equity firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among middle market private equity 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 an evidence 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, 7,762 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 5, 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.
Middle market private equity firms by metro
- Middle market private equity firms in London579
Frequently asked
How many middle market private equity firms are there based in the United Kingdom?
RevenueBase identified 807 middle market private equity 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?
ICG, headquartered in London, tops this list with the largest team on record.
Which city has the most middle market private equity firms?
London leads with 579 headquartered companies, followed by Leeds (11) and Birmingham (10).
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 7,762 verified decision-maker contacts tracked across these 807 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 5, 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 SmartSearch, 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.
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