Company lists · Data refreshed September 2026

Top 21 Lean consulting firms based in the United Kingdom

Name: Lean 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 4, 2026 1,286 companies tracked

RevenueBase identified 1,286 lean consulting firms headquartered in the United Kingdom as of September 2026 and tracks 4,290 professional contacts across them, including 1,375 with verified work emails and 399 with mobile numbers. London is the largest hub.

This list covers lean 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

1,286Companies

4,290Contacts tracked

1,375Verified emails

399Mobile numbers

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The 21 largest lean consulting firms based in the United Kingdom

Ranked by team size

Top 21 of 1,286 lean consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names lean consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ChartwellIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	116
	“We deliver rapid, remarkable and sustainable productivity gains for manufacturing leaders.” Source: company website · checked Sep 4, 2026
2	Growth HUBIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	84
	“At Growth Hub, we help organisations streamline processes, harness data effectively, and make informed decisions.” Source: company website · checked Sep 4, 2026
3	ProservartnerPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	82
	“Proservartner is an international consulting firm.” Source: company website · checked Sep 4, 2026
4	PENIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	75
	“We’re a specialist, management consultancy, focusing on; Customer Experience, Operational Excellence and Change Delivery, dedicated to helping our clients create real, positive…” Source: company website · checked Sep 4, 2026
5	Change Management GroupIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	74
	“Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Source: company website · checked Sep 4, 2026
6	Sharing In GrowthIndirect evidence	Derby, United KingdomHQ checked Sep 4, 2026	51-200	74
	“Our passionate team of growth and productivity specialists work with you to develop, inspire and improve every aspect of your organisation.” Source: company website · checked Sep 4, 2026
7	Collinson GrantIndirect evidence	Manchester, United KingdomHQ checked Sep 4, 2026	51-200	49
	“Collinson Grant helps clients throughout the world to improve efficiency and profitability.” Source: company website · checked Sep 4, 2026
8	SynapxPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	42
	“Award-winning global consulting experts, blending top-tier consulting and development skills with a cross-functional team, including MVPs who are delivering cost-effective…” Source: company website · checked Sep 4, 2026
9	Regency Grove ConsultantsIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	37
	“At Regency Grove we pride ourselves on providing each client with an exceptional standard of service to suit their specific needs and requirements.” Source: company website · checked Sep 4, 2026
10	Develop ConsultingPartial evidence	Coventry, United KingdomHQ checked Sep 4, 2026	11-50	36
	“From the team that built KM & T, developed the 'Productive Series' and delivered world-class improvement techniques across the globe, Develop Consulting is a UK-wide improvement…” Source: company website · checked Sep 4, 2026
11	CQM Training And Consultancy LTDIndirect evidence	Chesterfield, United KingdomHQ checked Sep 4, 2026	11-50	35
	“We are a highly respected training and consultancy organisation specialising in business and process improvement with over 30 years experience of developing practical, performance…” Source: company website · checked Sep 4, 2026
12	Libra EuropeIndirect evidence	Manchester, United KingdomHQ checked Sep 4, 2026	11-50	35
	“Libra Europe \| The Operational Implementation People We are operations experts who truly understand technology.” Source: company website · checked Sep 4, 2026
13	Oliver Wight Eame LLPIndirect evidence	Gloucester, United KingdomHQ checked Sep 4, 2026	11-50	33
	“Oliver Wight inspires people and organisations to achieve greatness.” Source: company website · checked Sep 4, 2026
14	Rethink ProductivityIndirect evidence	Shrewsbury, United KingdomHQ checked Sep 4, 2026	11-50	28
	“For over 15 years ReThink have supported companies to optimise their productivity and right size their operating models – typically saving circa 5% operating costs.” Source: company website · checked Sep 4, 2026
15	Geneo SoftwareIndirect evidence	Leamington Spa, United KingdomHQ checked Sep 4, 2026	11-50	27
	“Geneo was set up in 2007 to pursue software solutions for operational excellence.” Source: company website · checked Sep 4, 2026
16	Jigsaw Business GroupIndirect evidence	Washington, United KingdomHQ checked Sep 4, 2026	11-50	22
	“The Jigsaw Business Group provides a range of services to help organisations improve their people, processes and profitability.” Source: company website · checked Sep 4, 2026
17	CI ProjectsIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	21
	“CI Projects helps businesses continuously improve by enabling the true convergence of people, processes and technology.” Source: company website · checked Sep 4, 2026
18	Bourton Group LLPIndirect evidence	Northampton, United KingdomHQ checked Sep 4, 2026	11-50	20
	“We are passionate about improving our client’s operations.” Source: company website · checked Sep 4, 2026
19	ACZELIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	18
	“Aczel is a management consultancy with a unique difference.” Source: company website · checked Sep 4, 2026
20	KCTSPartial evidence	Prenton, United KingdomHQ checked Sep 4, 2026	11-50	18
	“Kaizen Consultancy & Training Services Based on the Wirral, UK Help manufacturers continually improve Application of Lean, Six Sigma & Total Productive Maintenance (TPM) Proven…” Source: company website · checked Sep 4, 2026
21	Simpletin ConsultingPartial evidence	St Albans, United KingdomHQ checked Sep 4, 2026	1-10	18
	“Simpletin Consulting where things are made simple.” Source: company website · checked Sep 4, 2026

Showing 21 of 1,286 lean consulting firms based in the United Kingdom

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Lean consulting firms based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 304 HQs

399Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

1,049

11-50

137

51-200

501-1,000

Verified emails by last verification

0–30

31–60

104

61–90

738

90–180

522

180+

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 lean consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “lean consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among lean 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 an evidence 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, 1,375 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 4, 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.

Lean consulting firms by metro

Lean consulting firms in London304
Lean consulting firms in Manchester29

Frequently asked

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

RevenueBase identified 1,286 lean 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?

Chartwell, headquartered in London, tops this list with the largest team on record.

Which city has the most lean consulting firms?

London leads with 304 headquartered companies, followed by Manchester (29) and Birmingham (21).

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 1,375 verified decision-maker contacts tracked across these 1,286 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 4, 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.