Company lists · Data refreshed September 2026

Top 25 Lean management consulting companies based in London, United Kingdom

Name: Lean management consulting companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 12, 2026 137 companies tracked

RevenueBase identified 137 lean management consulting companies headquartered in London, United Kingdom as of September 2026 and tracks 1,142 professional contacts across them, including 209 with verified work emails and 106 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers lean management consulting companies headquartered in London, 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 12, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 12, 2026 86% judged on-target in blind review

137Companies

1,142Contacts tracked

209Verified emails

106Mobile numbers

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The 25 largest lean management consulting companies based in London, United Kingdom

Ranked by team size

Top 25 of 137 lean management consulting companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to lean management consulting companies: 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	Chartwell	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	117 contacts →
	Indirect evidence “Chartwell is a global operations consultancy with offices in London, Boston and Hamburg.” Source: RevenueBase Database · checked Sep 12, 2026
2	Growth HUB	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	85 contacts →
	Indirect evidence “Growth Hub embeds operational teams inside professional services firms.” Source: RevenueBase Database · checked Sep 12, 2026
3	Simpler Consulting, An IBM Company	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	n/a	84 contacts →
	Partial evidence “With Simpler as your lean-transformation partner, you can achieve long-term success.” Source: RevenueBase Database · checked Sep 12, 2026
4	Change Management Group	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	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 12, 2026
5	CI Projects	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	20 contacts →
	Indirect evidence “CI Projects helps businesses continuously improve by enabling the true convergence of people, processes and technology.” Source: RevenueBase Database · checked Sep 12, 2026
6	Henkan	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	13 contacts →
	Indirect evidence “Organisational leaders turn to Henkan when operational challenges start revealing deeper, systemic issues.” Source: RevenueBase Database · checked Sep 12, 2026
7	OPS LAB	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	12 contacts →
	Partial evidence “Business Operations Consulting and Optimization.” Source: RevenueBase Database · checked Sep 12, 2026
8	Adastra Group	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	9 contacts →
	Indirect evidence “At Adastra, we help complex, asset-intensive and highly regulated organisations bridge the gap between strategic ambition and operational delivery.” Source: RevenueBase Database · checked Sep 12, 2026
9	Scalediq	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	5 contacts →
	Strong evidence “ScaledIQ consultants are dedicated to supporting small, medium and Large sized businesses with IT, Agile and Lean Six Sigma consulting.” Source: RevenueBase Database · checked Sep 12, 2026
10	Enterprise Excellence Network	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	5 contacts →
	Partial evidence “Founded by Professor Peter Hines, the Enterprise Excellence Network has been created to help Senior Lean Leaders accelerate through their Personal Knowledge, Lean Journey and…” Source: RevenueBase Database · checked Sep 12, 2026
11	Surelink Consulting Limited	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	4 contacts →
	Indirect evidence “Are you looking at improving, and automating your system and business process, and transforming your business by finding the perfect business tools for your business?” Source: RevenueBase Database · checked Sep 12, 2026
12	Mcgrath Group Of Companies	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	4 contacts →
	Indirect evidence “For nearly a third of a century McGrath has been in the wisdom business.” Source: RevenueBase Database · checked Sep 12, 2026
13	Profitry	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	3 contacts →
	Indirect evidence “At Profitry we believe that People and Process working in harmony produces the best and most profitable results.” Source: RevenueBase Database · checked Sep 12, 2026
14	236 Works	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	3 contacts →
	Indirect evidence “At 236 Works, we turn Operational Excellence into your Greatest Advantage.” Source: RevenueBase Database · checked Sep 12, 2026
15	Goring Consulting	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Partial evidence “Welcome to Goring Consulting, where we specialise in optimising processes to seamlessly transform resources into exceptional products and services, meeting the ever-evolving needs…” Source: RevenueBase Database · checked Sep 12, 2026
16	Transmute Consulting	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Partial evidence “Transmute Consulting is a consulting firm based in London UK.” Source: RevenueBase Database · checked Sep 12, 2026
17	Legal Process Improvement Institute	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	2 contacts →
	Indirect evidence “The LPI Institute was established with the mission to guide law firms and legal service providers in their journey of transformation, enabling them to maintain competitiveness…” Source: RevenueBase Database · checked Sep 12, 2026
18	Carter Consultancy	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Indirect evidence “Helping your business achieve greatness by working collaboratively to deliver improvements with tangible and measurable benefits.” Source: RevenueBase Database · checked Sep 12, 2026
19	Trice LTD	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Indirect evidence “We are a business consultancy that creates growth for the companies we work with.” Source: RevenueBase Database · checked Sep 12, 2026
20	Nest Consulting	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Indirect evidence “We work together with clients to implement the solutions they need to compete and thrive in the digital age.” Source: RevenueBase Database · checked Sep 12, 2026
21	Leanscape	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Strong evidence “Leanscape.io is a global consultancy and training provider of Lean Six Sigma management principles for corporates and professional individuals looking to develop their adaptive…” Source: RevenueBase Database · checked Sep 12, 2026
22	Pinnacle Advisory Services	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Indirect evidence “Pinnacle Advisory Services We help fix your business problems and improve the performance of your business operations, fast.” Source: RevenueBase Database · checked Sep 12, 2026
23	Racine Consulting	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Indirect evidence “We believe that transformation does not have an end destination, it is the continuous numerous journeys of Kaizen that an individual or company undertakes to achieve success.” Source: RevenueBase Database · checked Sep 12, 2026
24	Alcortech Limited	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Partial evidence “Agile and Lean software development consultancy.” Source: RevenueBase Database · checked Sep 12, 2026
25	Adamsons Associates UK LTD	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	2 contacts →
	Partial evidence “We at Adamsons Associates are a group of skilled individuals who are expert in developing solutions for the effectiveness and efficient management of businesses.” Source: RevenueBase Database · checked Sep 12, 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: lean management consulting companies. 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 lean management consulting companies.
Partial evidence: Its own public description names part of lean management consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lean management consulting companies. 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 137 lean management consulting companies based in London, United Kingdom

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Lean management consulting companies based in London, United Kingdom at a glance

As of Sep 12, 2026

18.3%Verified-email coverage

9.3%Mobile-number coverage

8.3Average contacts per company

1-10Median size (employees)

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

115

11-50

51-200

201-500

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

1670–30

3831–60

261–90

090–180

2180+

Company record updated

Median 56.0d

00–30

61231–60

34261–90

10690–180

82180+

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 management consulting companies, 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 London, United Kingdom whose own description of what they do matches “lean management consulting companies”. 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 lean management consulting companies), 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 lean management consulting companies, and records with no verified work email. Companies headquartered outside London 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, 209 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 12, 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.

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 lean management consulting companies, 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 lean management consulting companies are there based in London, United Kingdom?

RevenueBase identified 137 lean management consulting companies headquartered in London, 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 in the United Kingdom has the most lean management consulting companies?

London leads the United Kingdom with 100 headquartered companies, followed by Nottingham (10) and Birmingham (8).

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 209 verified decision-maker contacts tracked across these 137 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 12, 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.