Company lists · Data refreshed September 2026

Top 25 Business consultancies based in the United Kingdom

Name: Business consultancies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 15,837 companies tracked

RevenueBase identified 15,837 company matches for business consultancies associated with the United Kingdom as of September 2026 and tracks 112,820 professional contacts across them, including 40,922 with verified work emails and 9,690 with mobile numbers. London is the largest hub.

This list covers company matches for business consultancies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built

15,837Companies

112,820Contacts tracked

40,922Verified emails

9,690Mobile numbers

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The 25 largest business consultancies based in the United Kingdom

Ranked by team size

Top 25 of 15,837 company matches for business consultancies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ey-Parthenon	Exact match	London, United KingdomHQ recorded Sep 23, 2026	10001+	17,070 contacts →
	Exact match “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Baringa	Exact match	London, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	2,179 contacts →
	Exact match “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	TLT LLP	Exact match	Bristol, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	1,797 contacts →
	Exact match “We’re your business advisers as well as your lawyers, working in step with you to protect your interests today and progress your ambitions for tomorrow.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Blackmont Consulting	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	1,221 contacts →
	Exact match “Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	1,011 contacts →
	Exact match “At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	TC Group	Exact match	Steyning, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	901 contacts →
	Exact match “TC Group \| 0330 088 \| At TC Group, everything we do is anchored in our purpose: shaping stronger businesses and building secure and meaningful futures.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	Setfords	Exact match	Surrey, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	661 contacts →
	Exact match “Setfords is the fastest-growing UK Top 100 law firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Armstrong Watson	Exact match	Carlisle, United KingdomHQ recorded Sep 23, 2026	501-1,000	579 contacts →
	Exact match “Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Strategy Insights	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	528 contacts →
	Exact match “Strategy Insights is a specialist business and economic development consultancy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Price Bailey	Exact match	Bishop's Stortford, United KingdomHQ recorded Sep 23, 2026	201-500	500 contacts →
	Exact match “Price Bailey is a leading firm of chartered accountants and business advisers with offices across East Anglia, London, and a strategic presence overseas, serving local SMEs…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Analysys Mason	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	459 contacts →
	Exact match “Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Paperchase	Exact match	London Croydon, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	402 contacts →
	Exact match “Paperchase Accountancy is a leading hospitality accountancy and consultancy firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Clearwater	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	384 contacts →
	Exact match “Clearwater is an independent corporate finance house focused on unlocking the latent potential in every business.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Duncan & Toplis	Exact match	Grantham, United KingdomHQ recorded Sep 23, 2026	501-1,000	378 contacts →
	Exact match “Duncan & Toplis is one of the largest accounting and business advisers in the UK.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Softwire	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	360 contacts →
	Exact match “Softwire exists to help organisations use technology to deliver meaningful outcomes and a positive impact for themselves, their users and the world.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Emergn	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	351 contacts →
	Exact match “Emergn is a global technology and management consultancy built on a simple conviction: the only sustainable competitive advantage is the way you work.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Q5	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	344 contacts →
	Exact match “Q5 is a global, award-winning management consultancy focused on building healthy, high-performing organisations.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	BK Plus	Exact match	Aldridge, United KingdomHQ recorded Sep 23, 2026	501-1,000	331 contacts →
	Exact match “At bk plus, we support SMEs, owner-managed and entrepreneurial businesses across the UK with practical accounting and advisory services that are tailored to your needs.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Davies	Exact match	London, United KingdomHQ recorded Sep 23, 2026	5,001-10,000	329 contacts →
	Exact match “We are the global consulting division of Davies, accelerating business, technology and people performance across financial services including Retail Finance & Corporate Banking…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	PGC	Exact match	Uk, United KingdomHQ recorded Sep 23, 2026	n/a	320 contacts →
	Exact match “In 2018 PGC rebranded as Friisberg & Partners International +44 207 062 3603” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Cartesian	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	302 contacts →
	Exact match “Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Leonard Curtis	Exact match	Manchester, United KingdomHQ recorded Sep 23, 2026	201-500	283 contacts →
	Exact match “Leonard Curtis is a team of 300+ financial, legal and business experts, operating across the UK and offshore.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Gate ONE	Exact match	King's Cross, United KingdomHQ recorded Sep 23, 2026	201-500	281 contacts →
	Exact match “Most organisations commit to bold growth ambitions but aren’t set up to deliver them.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Quantuma	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	277 contacts →
	Exact match “Quantuma is a leading business advisory firm which works with businesses at the key milestones.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Elixirr	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	275 contacts →
	Exact match “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “business consultancies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 15,837 business consultancies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 40,922 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business consultancies based in the United Kingdom at a glance

As of Sep 23, 2026

36.3%Verified-email coverage

8.6%Mobile-number coverage

7.1Average contacts per company

1-10Median size (employees)

36.2%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

13,039

11-50

2,141

51-200

428

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 25.0d

28,7040–30

8,81731–60

55961–90

4990–180

163180+

Company record updated

Median 75.0d

00–30

20,73031–60

53,59761–90

27,07590–180

6,043180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United Kingdom whose business descriptions match “business consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 40,922 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Business consultancies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “business consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business consultancies are there based in the United Kingdom?

RevenueBase identified 15,837 company matches for business consultancies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ey-Parthenon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most business consultancies?

London leads with 5730 company records, followed by Manchester (355) and Birmingham (202).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 40,922 professional contacts with verified work emails tracked across these 15,837 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 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.