Company lists · Data refreshed September 2026

Top 25 Continuous improvement consulting firms based in the United Kingdom

Name: Continuous 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 1, 2026 2,830 companies tracked

RevenueBase identified 2,830 continuous improvement consulting firms headquartered in the United Kingdom as of September 2026 and tracks 12,675 professional contacts across them, including 3,202 with verified work emails and 874 with mobile numbers. London is the largest hub.

This list covers continuous improvement consulting 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

2,830Companies

12,675Contacts tracked

3,202Verified emails

874Mobile numbers

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The 25 largest continuous improvement consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 2,830 continuous improvement consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to continuous improvement 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	Q5	Indirect evidence	Leeds, United Kingdom	501-1,000	340 contacts →
	Indirect evidence “Q5 is a global, award-winning consultancy specialising in 'organisational health' and performance.” Source: RevenueBase Database · checked Sep 1, 2026
2	H&z Management Consulting	Indirect evidence	London, United Kingdom	501-1,000	287 contacts →
	Indirect evidence “Welcome to H&Z We offer more than successful strategy development.” Source: RevenueBase Database · checked Sep 1, 2026
3	Moorhouse B Corp Certified	Partial evidence	London, United Kingdom	201-500	249 contacts →
	Partial evidence “We’re a dynamic consulting firm, focused on delivering change.” Source: RevenueBase Database · checked Sep 1, 2026
4	TBM Consulting Group	Partial evidence	Mansfield, United Kingdom	51-200	164 contacts →
	Partial evidence “TBM specializes in operations and supply chain consulting for manufacturers and distributors across sectors such as Food & Beverage, Pharmaceutical, Industrial Products…” Source: RevenueBase Database · checked Sep 1, 2026
5	Chartwell	Indirect evidence	London, United Kingdom	51-200	116 contacts →
	Indirect evidence “We deliver rapid, remarkable and sustainable productivity gains for manufacturing leaders.” Source: RevenueBase Database · checked Sep 1, 2026
6	Whitetree	Partial evidence	Bristol, United Kingdom	51-200	87 contacts →
	Partial evidence “Whitetree is an agile consulting firm that provides strategic guidance and operational support to large businesses and government departments.” Source: RevenueBase Database · checked Sep 1, 2026
7	Mantec	Partial evidence	London, United Kingdom	51-200	85 contacts →
	Partial evidence “Mantec, a member of Andersen Consulting, is a management consultancy with offices in Gothenburg, Stockholm, Oslo, Copenhagen, Helsinki and London.” Source: RevenueBase Database · checked Sep 1, 2026
8	Growth HUB	Indirect evidence	London, United Kingdom	51-200	84 contacts →
	Indirect evidence “At Growth Hub, we help organisations streamline processes, harness data effectively, and make informed decisions.” Source: RevenueBase Database · checked Sep 1, 2026
9	Proservartner	Partial evidence	London, United Kingdom	51-200	82 contacts →
	Partial evidence “Proservartner is an international consulting firm.” Source: RevenueBase Database · checked Sep 1, 2026
10	PEN	Indirect evidence	London, United Kingdom	51-200	75 contacts →
	Indirect evidence “We’re a specialist, management consultancy, focusing on; Customer Experience, Operational Excellence and Change Delivery, dedicated to helping our clients create real, positive…” Source: RevenueBase Database · checked Sep 1, 2026
11	Change Management Group	Indirect evidence	London, United Kingdom	51-200	74 contacts →
	Indirect evidence “Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Source: RevenueBase Database · checked Sep 1, 2026
12	Sharing In Growth	Indirect evidence	Derby, United Kingdom	51-200	74 contacts →
	Indirect evidence “Our passionate team of growth and productivity specialists work with you to develop, inspire and improve every aspect of your organisation.” Source: RevenueBase Database · checked Sep 1, 2026
13	Excelledia	Partial evidence	Birmingham, United Kingdom	51-200	63 contacts →
	Partial evidence “Excelledia is a management consulting firm that provides insights, organizational transformation, and business strategy through people, process & technology consulting to clients…” Source: RevenueBase Database · checked Sep 1, 2026
14	Pink Elephant Emea	Indirect evidence	Reading, United Kingdom	51-200	57 contacts →
	Indirect evidence “Pink Elephant is an international knowledge leader in the field of business innovation & business change.” Source: RevenueBase Database · checked Sep 1, 2026
15	Collinson Grant	Indirect evidence	London, United Kingdom	51-200	49 contacts →
	Indirect evidence “Collinson Grant helps clients throughout the world to improve efficiency and profitability.” Source: RevenueBase Database · checked Sep 1, 2026
16	Axxello	Partial evidence	Cambridge, United Kingdom	51-200	41 contacts →
	Partial evidence “Axxello (Pty) Ltd is a leading provider of process engineering and project management project execution/ consulting services, with expertise in the fast-moving consumer goods…” Source: RevenueBase Database · checked Sep 1, 2026
17	TXM Lean Solutions	Partial evidence	Buckingham, United Kingdom	51-200	35 contacts →
	Partial evidence “About TXM Lean Solutions: TXM Lean Solutions is a worldwide Lean consulting company that was established in 2004 with the aim of helping manufacturing and supply chain companies…” Source: RevenueBase Database · checked Sep 1, 2026
18	WORTH	Indirect evidence	Reading, United Kingdom	51-200	27 contacts →
	Indirect evidence “Worth helps aspirational companies leverage their technology and talent to create impactful and lasting change.” Source: RevenueBase Database · checked Sep 1, 2026
19	Supply Source INC	Indirect evidence	Glenrothes, United Kingdom	51-200	18 contacts →
	Indirect evidence “Supply Source* Inc, an Oregon-based company, is striving to be a problem solver in areas that help international and domestic businesses grow sales, improve efficiency, and reduce…” Source: RevenueBase Database · checked Sep 1, 2026
20	Progenium	Indirect evidence	London, United Kingdom	51-200	18 contacts →
	Indirect evidence “We strongly believe that success is not created by chance – success is a result.” Source: RevenueBase Database · checked Sep 1, 2026
21	Pexlify, A Merkle Company	Indirect evidence	London, United Kingdom	51-200	17 contacts →
	Indirect evidence “https://merkle.com - Please visit as Pexlify has now integrated with Merkle, a leading Salesforce Summit and MuleSoft Partner.” Source: RevenueBase Database · checked Sep 1, 2026
22	Base 3 Systems	Indirect evidence	West, United Kingdom	51-200	17 contacts →
	Indirect evidence “Founded in 1996, Base 3 Systems has built a reputation for supporting our customers in delivering large programmes of change and establishing in-house capability.” Source: RevenueBase Database · checked Sep 1, 2026
23	Project7 Consultancy	Partial evidence	Mildenhall, United Kingdom	51-200	15 contacts →
	Partial evidence “Unlocking Organisational Excellence Project7 (P7C) are Global Performance Improvement Specialists, transforming organisations by rapidly solving business problems and delivering…” Source: RevenueBase Database · checked Sep 1, 2026
24	Holos Change	Indirect evidence	Surrey, United Kingdom	51-200	14 contacts →
	Indirect evidence “Holos is a business consultancy with a global community of elite consultants, coaches and facilitators, We facilitate transformational cultural and leadership change through the…” Source: RevenueBase Database · checked Sep 1, 2026
25	Henkan	Indirect evidence	Wirral, United Kingdom	51-200	13 contacts →
	Indirect evidence “Organisational leaders turn to Henkan when operational challenges start revealing deeper, systemic issues.” Source: RevenueBase Database · checked Sep 1, 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: continuous improvement 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 continuous improvement consulting firms.
Partial evidence: Its own public description names part of continuous improvement consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name continuous improvement 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 2,830 continuous improvement consulting firms based in the United Kingdom

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Continuous improvement consulting firms based in the United Kingdom at a glance

As of Sep 1, 2026

25.3%Verified-email coverage

6.9%Mobile-number coverage

4.5Average contacts per company

1-10Median size (employees)

27.3%Largest-city concentration · London

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

2,295

11-50

337

51-200

201-500

501-1,000

1,001-5,000

10001+

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 continuous improvement 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 the United Kingdom whose own description of what they do matches “continuous improvement 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 continuous improvement 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 continuous improvement consulting 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 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, 3,202 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 1, 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.

Continuous improvement consulting firms by metro

Continuous improvement consulting firms in London774
Continuous improvement consulting firms in Manchester65
Continuous improvement consulting firms in Birmingham38
Continuous improvement consulting firms in Edinburgh35
Continuous improvement consulting firms in Leeds34
Continuous improvement consulting firms in Bristol33
Continuous improvement consulting firms in Glasgow30

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 continuous improvement 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 continuous improvement consulting firms are there based in the United Kingdom?

RevenueBase identified 2,830 continuous improvement consulting 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?

Q5, headquartered in Leeds, tops this list with the largest team on record.

Which city has the most continuous improvement consulting firms?

London leads with 774 headquartered companies, followed by Manchester (65) and Birmingham (38).

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 3,202 verified decision-maker contacts tracked across these 2,830 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 1, 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.