Company lists · Data verified August 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 Verified Aug 28, 2026 2,830 companies tracked

There are 2,830 continuous improvement consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Q5	Leeds	501-1,000	340	233
2	H&z Management Consulting	London	501-1,000	287	153
3	Moorhouse B Corp Certified	London	201-500	249	148
4	TBM Consulting Group	Mansfield	51-200	164	39
5	Chartwell	London	51-200	116	73
6	Whitetree	Bristol	51-200	87	53
7	Mantec	London	51-200	85	32
8	Growth HUB	London	51-200	84	8
9	Proservartner	London	51-200	82	55
10	PEN	London	51-200	75	9
11	Change Management Group	London	51-200	74	53
12	Sharing In Growth	Derby	51-200	74	42
13	Excelledia	Birmingham	51-200	63	25
14	Pink Elephant Emea	Reading	51-200	57	40
15	Collinson Grant	London	51-200	49	26
16	Axxello	Cambridge	51-200	41	5
17	TXM Lean Solutions	Buckingham	51-200	35	26
18	WORTH	Reading	51-200	27	7
19	Supply Source INC	Glenrothes	51-200	18	10
20	Progenium	London	51-200	18	7
21	Pexlify, A Merkle Company	London	51-200	17	6
22	Base 3 Systems	West	51-200	17	2
23	Project7 Consultancy	Mildenhall	51-200	15	5
24	Holos Change	Surrey	51-200	14	11
25	Henkan	Wirral	51-200	13	8

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 Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 774 HQs

874Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

2,295

11-50

337

51-200

201-500

501-1,000

1,001-5,000

10001+

Continuous improvement consulting firms by metro

Metro	Companies
Continuous improvement consulting firms in London	774
Continuous improvement consulting firms in Manchester	65
Continuous improvement consulting firms in Birmingham	38
Continuous improvement consulting firms in Edinburgh	35
Continuous improvement consulting firms in Leeds	34
Continuous improvement consulting firms in Bristol	33
Continuous improvement consulting firms in Glasgow	30

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “continuous improvement consulting firms”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 2,830 continuous improvement consulting firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

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 is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.