Company lists · Data refreshed September 2026

Top 25 Commercial consulting firms based in the United Kingdom

Name: Commercial consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 5,557 companies tracked

RevenueBase identified 5,557 company matches for commercial consulting firms associated with the United Kingdom as of September 2026 and tracks 44,089 professional contacts across them, including 16,104 with verified work emails and 4,592 with mobile numbers. London is the largest hub.

This list covers company matches for commercial consulting firms 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 28, 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 28, 2026 How this list was built

5,557Companies

44,089Contacts tracked

16,104Verified emails

4,592Mobile numbers

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The 25 largest commercial consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 5,557 company matches for commercial consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 28, 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 28, 2026 · View company records in RevenueBase
2	Baringa	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
4	Strategy Insights	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	528 contacts →
	Exact match “Strategy Insights is a specialist business and economic development consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Frontier Economics	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	477 contacts →
	Exact match “We help companies with their biggest challenges – market strategies, regulatory reviews, competition inquiries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Cartesian	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
7	CIL Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	284 contacts →
	Exact match “CIL is a global growth strategy consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Elixirr	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
9	OIM	Exact match	Bath, United KingdomHQ recorded Sep 28, 2026	n/a	198 contacts →
	Exact match “OIM is dedicated to building competitive organisations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Clarify	Exact match	Theale, United KingdomHQ recorded Sep 28, 2026	51-200	191 contacts →
	Exact match “Clarify helps global Technology companies achieve sustained and significant commercial success.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Intralink	Exact match	Abingdon, United KingdomHQ recorded Sep 28, 2026	51-200	185 contacts →
	Exact match “Intralink is a business development consultancy specialising in international markets.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	TXM Consult	Exact match	Milton Keynes, United KingdomHQ recorded Sep 28, 2026	51-200	166 contacts →
	Exact match “In an uncertain, complex, and ambiguous world, business change is essential and inevitable.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	CVL	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	165 contacts →
	Exact match “Strategic development for already dynamic businesses, successful mergers & acquisitions between household names, technology planning in cutting edge industries and real-world…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Athens	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	122 contacts →
	Exact match “Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	PHMC	Exact match	Buxton, United KingdomHQ recorded Sep 28, 2026	n/a	98 contacts →
	Exact match “Freelance management consultancy, support business owners and their management teams.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	BDO Northern Ireland	Exact match	Belfast, United KingdomHQ recorded Sep 28, 2026	51-200	93 contacts →
	Exact match “BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Heavenly	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	85 contacts →
	Exact match “Heavenly is a global, independent creative consultancy, founded in 2003.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Elevate	Exact match	Bristol, United KingdomHQ recorded Sep 28, 2026	51-200	83 contacts →
	Exact match “At ELEVATE, we execute complex B2B go-to-market strategies with precision at every revenue-critical juncture, managing leads, building executive access, winning deals, expanding…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Plural Strategy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	78 contacts →
	Exact match “Plural Strategy is a strategy consultancy for the media, information and technology industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Change Management Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	74 contacts →
	Exact match “Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Excalibur Communications	Exact match	Swindon, United KingdomHQ recorded Sep 28, 2026	51-200	72 contacts →
	Exact match “Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Punter Southall	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	72 contacts →
	Exact match “Punter Southall is a group of companies with one aim – helping businesses and people make better decisions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Sharma & CO	Exact match	Birmingham, United KingdomHQ recorded Sep 28, 2026	n/a	71 contacts →
	Exact match “Sharma & Co operates from offices in Birmingham, London and Manchester delivering practical and cost effective advice.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	NEW Link Consulting	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	69 contacts →
	Exact match “In complex transformation programmes, risk, regulation, financial crime, data, technology and operations no longer sit in separate silos.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	BFY Group	Exact match	Nottingham, United KingdomHQ recorded Sep 28, 2026	51-200	63 contacts →
	Exact match “BFY Group is one of the UK's Leading Management Consultancies, recognised by the Financial Times.” Recorded in the RevenueBase company graph · Sep 28, 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 “commercial consulting firms”. 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 5,557 commercial consulting firms based in the United Kingdom

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Commercial consulting firms based in the United Kingdom at a glance

As of Sep 28, 2026

36.5%Verified-email coverage

10.4%Mobile-number coverage

7.9Average contacts per company

1-10Median size (employees)

38.1%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

4,739

11-50

627

51-200

113

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 30.0d

8,0400–30

7,46431–60

45261–90

3090–180

118180+

Company record updated

Median 78.0d

00–30

9,42231–60

17,10461–90

15,28290–180

2,281180+

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 “commercial consulting firms” 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 16,104 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 28, 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.

Commercial consulting firms 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 “commercial consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial consulting firms are there based in the United Kingdom?

RevenueBase identified 5,557 company matches for commercial consulting firms 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 commercial consulting firms?

London leads with 2115 company records, followed by Manchester (114) and Birmingham (62).

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 16,104 professional contacts with verified work emails tracked across these 5,557 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 28, 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.