Company lists · Data refreshed September 2026

Top 25 Improvement consulting firms based in the United Kingdom

Name: Improvement 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 26, 2026 9,387 companies tracked

RevenueBase identified 9,387 company matches for improvement consulting firms associated with the United Kingdom as of September 2026 and tracks 54,720 professional contacts across them, including 17,973 with verified work emails and 4,388 with mobile numbers. London is the largest hub.

This list covers company matches for improvement 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 26, 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 26, 2026 How this list was built

9,387Companies

54,720Contacts tracked

17,973Verified emails

4,388Mobile numbers

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The 25 largest improvement consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 9,387 company matches for improvement consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 26, 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	Baringa	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
2	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
3	Scott Logic	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Sep 26, 2026	201-500	383 contacts →
	Exact match “At Scott Logic, we design and build software that transforms the performance of some of the world’s biggest and most demanding organisations.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
4	Softwire	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
5	STEM	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	357 contacts →
	Exact match “We are now Inizio Ignite, the global advisory partner for health and life sciences, encompassing connected expertise across Research Partnership, Putnam, Vynamic, and STEM.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
6	Emergn	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
7	Q5	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
8	Cartesian	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
9	Pareto	Exact match	Wilmslow, United KingdomHQ recorded Sep 26, 2026	201-500	297 contacts →
	Exact match “Pareto partner globally with organisations to take people from learning to leading.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
10	Elixirr	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
11	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	247 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
12	Percipere	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	245 contacts →
	Exact match “Percipere is a niche global consultancy, partnering companies in their evolution towards greater operational efficiency and profitability.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
13	Sheffield Haworth	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	244 contacts →
	Exact match “Sheffield Haworth is a global consultancy founded in 1993.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
14	Albany Beck	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	240 contacts →
	Exact match “Albany Beck is a client-first consulting firm helping financial services organisations deliver complex change and build capability, not dependency.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
15	Fusion Global Business Solutions	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	219 contacts →
	Exact match “As a global leader in service management, we help businesses transform their operations with data-driven insights, scalable digital solutions, and measurable results.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
16	Quantzig	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	216 contacts →
	Exact match “Quantzig is at the forefront of partnering with businesses to help them unlock transformative value through analytics solutions.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
17	OIM	Exact match	Bath, United KingdomHQ recorded Sep 26, 2026	n/a	198 contacts →
	Exact match “OIM is dedicated to building competitive organisations.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
18	Clarify	Exact match	Theale, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
19	Cambridge Education	Exact match	Cambridge, United KingdomHQ recorded Sep 26, 2026	201-500	189 contacts →
	Exact match “Cambridge Education is a global leader in providing consultancy services to government agencies at national and local level, and to international development agencies and…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
20	Azurian	Exact match	London, United KingdomHQ recorded Sep 26, 2026	201-500	178 contacts →
	Exact match “The future has never moved this fast.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
21	Clarasys	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	170 contacts →
	Exact match “We are an employee-owned, award-winning international consulting firm that believes there’s a better way to do consultancy.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
22	TXM Consult	Exact match	Milton Keynes, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
23	The Berkeley Partnership	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	152 contacts →
	Exact match “Founded in 1990, The Berkeley Partnership is an independent management consultancy, specialising in business transformation.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
24	Sysdoc	Exact match	London (uk), United KingdomHQ recorded Sep 26, 2026	51-200	142 contacts →
	Exact match “At Sysdoc we exist to help our clients to transform, adapt and operate in order for them to achieve their ambitions, and to provide our own people with opportunities that allow…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
25	ORG	Exact match	London, United KingdomHQ recorded Sep 26, 2026	1,001-5,000	139 contacts →
	Exact match “We believe that change is an opportunity to thrive.” Recorded in the RevenueBase company graph · Sep 26, 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 “improvement 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 9,387 improvement consulting firms based in the United Kingdom

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Improvement consulting firms based in the United Kingdom at a glance

As of Sep 26, 2026

32.8%Verified-email coverage

8.0%Mobile-number coverage

5.8Average contacts per company

1-10Median size (employees)

35.5%Largest-city concentration · London

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

7,729

11-50

1,235

51-200

280

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 28.0d

12,0120–30

5,53931–60

33761–90

890–180

77180+

Company record updated

Median 78.0d

00–30

8,27731–60

22,23461–90

20,86690–180

3,343180+

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 “improvement 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 17,973 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 26, 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.

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

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

RevenueBase identified 9,387 company matches for improvement 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?

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

Which city has the most improvement consulting firms?

London leads with 3332 company records, followed by Manchester (204) and Bristol (116).

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 17,973 professional contacts with verified work emails tracked across these 9,387 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 26, 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.