Company lists · Data refreshed September 2026

Top 25 Equity consulting firms based in London, United Kingdom

Name: Equity consulting 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 12, 2026 729 companies tracked

RevenueBase identified 729 equity consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 21,923 professional contacts across them, including 10,298 with verified work emails and 2,991 with mobile numbers. London is the largest hub.

This list covers equity consulting 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 12, 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 12, 2026 86% judged on-target in blind review

729Companies

21,923Contacts tracked

10,298Verified emails

2,991Mobile numbers

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The 25 largest equity consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 729 equity consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to equity consulting 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	Ey-Parthenon	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	10001+	17,070 contacts →
	Indirect evidence “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Source: RevenueBase Database · checked Sep 12, 2026
2	Clearwater	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	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 12, 2026
3	Quantuma	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	277 contacts →
	Indirect evidence “Quantuma is a leading business advisory firm which works with businesses at the key milestones.” Source: RevenueBase Database · checked Sep 12, 2026
4	Opus Business Advisory Group	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	144 contacts →
	Indirect evidence “Opus Business Advisory Group is an independent advisory firm that assists clients to achieve their objectives, enhance value and attain the best possible results.” Source: RevenueBase Database · checked Sep 12, 2026
5	Athens	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	122 contacts →
	Indirect evidence “Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.” Source: RevenueBase Database · checked Sep 12, 2026
6	SI Global	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	79 contacts →
	Indirect evidence “We are SI Global.” Source: RevenueBase Database · checked Sep 12, 2026
7	Erevena	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	73 contacts →
	Indirect evidence “Erevena is the global executive search advisor to the world's most ambitious tech companies.” Source: RevenueBase Database · checked Sep 12, 2026
8	Eight Advisory UK	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	501-1,000	71 contacts →
	Indirect evidence “Eight Advisory is an independent advisory firm specialising in transactions, restructuring and transformation.” Source: RevenueBase Database · checked Sep 12, 2026
9	Alysian	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	71 contacts →
	Partial evidence “Alysian is a boutique advisor dedicated to technology and digital enabled value creation for private equity firms and their portfolio companies.” Source: RevenueBase Database · checked Sep 12, 2026
10	STJ Advisors	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	68 contacts →
	Partial evidence “STJ distinguishes itself with the leading team of seasoned specialists in Equity Capital Markets.” Source: RevenueBase Database · checked Sep 12, 2026
11	Collingwood	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	59 contacts →
	Indirect evidence “Collingwood is the only growth, value creation, and M&A advisory that is purpose-built to help information, media, and events businesses create and realise shareholder value.” Source: RevenueBase Database · checked Sep 12, 2026
12	Jamieson Corporate Finance	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	55 contacts →
	Indirect evidence “We are the leading global, independent management advisory firm, owned and managed by our team of professionals, and operating across an international network of offices.” Source: RevenueBase Database · checked Sep 12, 2026
13	Arrowpoint Advisory	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	48 contacts →
	Indirect evidence “Arrowpoint Advisory is the dedicated mid-market advisory team of Rothschild & Co in the UK.” Source: RevenueBase Database · checked Sep 12, 2026
14	Torch Partners	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	47 contacts →
	Indirect evidence “Torch Partners is a leading M&A and private capital markets adviser to the Digital Infrastructure, Software and Technology sectors.” Source: RevenueBase Database · checked Sep 12, 2026
15	Pmsi Strategy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	45 contacts →
	Partial evidence “PMSI is a management consulting firm specialising in commercial due diligence, market intelligence and strategy consulting.” Source: RevenueBase Database · checked Sep 12, 2026
16	POE Advisory	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	45 contacts →
	Indirect evidence “Three practice areas built for the demands of PE, family offices, asset managers, investors and portfolio businesses.” Source: RevenueBase Database · checked Sep 12, 2026
17	Continuum Advisory Partners	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	43 contacts →
	Partial evidence “Continuum Advisory Partners is a London-based Corporate Finance Advisory firm serving entrepreneurial, private equity, corporate and institutional clients across the Financial…” Source: RevenueBase Database · checked Sep 12, 2026
18	EOS Deal Advisory	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	42 contacts →
	Indirect evidence “At EOS Deal Advisory, our focus is to provide our clients with targeted advice that focusses on driving future value, leverages evolving technologies, and ensures operational…” Source: RevenueBase Database · checked Sep 12, 2026
19	Time Partners	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	38 contacts →
	Indirect evidence “Time Partners is an investment advisory firm.” Source: RevenueBase Database · checked Sep 12, 2026
20	Wharton Business Consulting	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	32 contacts →
	Partial evidence “Wharton Business Consulting advises leaders on maximising value from their organisations, whether that be through post-merger integration, acquisition or transformation.” Source: RevenueBase Database · checked Sep 12, 2026
21	Carpenter Farraday	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	31 contacts →
	Indirect evidence “For almost 20 years, Carpenter Farraday has advised leading private markets, asset management and wealth management firms on executive search, market intelligence and team…” Source: RevenueBase Database · checked Sep 12, 2026
22	Fairgrove	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	30 contacts →
	Indirect evidence “We are an award-winning strategic management consultancy, which exists to create value for its clients by helping them grow profitable sales and complete successful mergers and…” Source: RevenueBase Database · checked Sep 12, 2026
23	Skill Capital	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	29 contacts →
	Partial evidence “Skill Capital works with world-class executives and large-cap private equity investors including buyout, pension funds and sovereign wealth.” Source: RevenueBase Database · checked Sep 12, 2026
24	Montresor Legal	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	28 contacts →
	Indirect evidence “Montresor Legal is an executive recruitment consultancy specialising in the placement of Finance, Corporate and Dispute Resolution lawyers.” Source: RevenueBase Database · checked Sep 12, 2026
25	Greco Advisors	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	26 contacts →
	Partial evidence “Greco Advisors is a specialist private equity search and advisory firm, dedicated to the value creation and portfolio operations ecosystem.” Source: RevenueBase Database · checked Sep 12, 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: equity consulting 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 equity consulting firms.
Partial evidence: Its own public description names part of equity consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name equity consulting 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 729 equity consulting firms based in London, United Kingdom

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Equity consulting firms based in London, United Kingdom at a glance

As of Sep 12, 2026

47.0%Verified-email coverage

13.6%Mobile-number coverage

30.1Average contacts per company

1-10Median size (employees)

79.0%Largest-city concentration · London

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

554

11-50

138

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

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

Email last verified

Median 15.0d

8,4440–30

1,70231–60

3761–90

2790–180

88180+

Company record updated

Median 53.0d

00–30

14,21331–60

5,25661–90

1,48990–180

965180+

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 equity consulting 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 “equity consulting 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 equity consulting 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 equity consulting 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, 10,298 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 12, 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.

Equity consulting firms by metro in the United Kingdom

Equity consulting firms in London576

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 equity consulting 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 equity consulting firms are there based in London, United Kingdom?

RevenueBase identified 729 equity consulting 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?

Ey-Parthenon, headquartered in London, tops this list with the largest team on record.

Which city has the most equity consulting firms?

London leads with 576 headquartered companies, followed by Manchester (20) and Bristol (14).

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 10,298 verified decision-maker contacts tracked across these 729 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 12, 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.