Company lists · Data verified August 2026

Top 25 Defense organizational consulting firms based in the United Kingdom

Name: Defense organizational 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 4,144 companies tracked

There are 4,144 defense organizational consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 35,092 professional contacts across them, including 10,805 with verified work emails and 6,087 with mobile numbers. London is the largest hub.

This list covers defense organizational 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.

4,144Companies

35,092Contacts tracked

10,805Verified emails

6,087Mobile numbers

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The 25 largest defense organizational consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 4,144 defense organizational 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	Exponent	London	1,001-5,000	1,561	980
2	DDI Development Dimensions International	London	1,001-5,000	1,549	467
3	Q5	Leeds	501-1,000	340	233
4	Mercer UK	London	10001+	334	155
5	Elixirr	London	501-1,000	271	193
6	Moorhouse B Corp Certified	London	201-500	249	148
7	RHR International	London	201-500	209	123
8	Gatenbysanderson	London	51-200	203	145
9	Green Park	London	51-200	186	67
10	TBM Consulting Group	Mansfield	51-200	164	39
11	Innosight	London	51-200	128	84
12	Trpglobal	London	51-200	123	36
13	Eric Salmon & Partners	n/a	51-200	118	63
14	Redrock Consulting	Bristol	51-200	114	49
15	Citisoft	London	51-200	100	79
16	Valentia Partners	London	51-200	93	78
17	Lynxeye	London	51-200	88	65
18	Change Management Group	London	51-200	74	53
19	6point6 Part Of Accenture	London	201-500	73	29
20	Businessfourzero	London	51-200	70	49
21	Bailey & French	Brighton	51-200	69	21
22	Camelot	London	51-200	64	8
23	Company X Consulting LTD	Uk	51-200	53	33
24	Senn Delaney, A Heidrick & Struggles Company	Richmond Upon Thames	1,001-5,000	51	7
25	CMT	Bristol	51-200	46	6

Showing 25 of 4,144 defense organizational consulting firms based in the United Kingdom

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Defense organizational consulting firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 1552 HQs

6,087Contacts with mobile numbers

12Emails re-verified in last 30 days

Companies by employee count

1-10

3,248

11-50

565

51-200

125

201-500

501-1,000

1,001-5,000

10001+

Defense organizational consulting firms by metro

Metro	Companies
Defense organizational consulting firms in London	1552
Defense organizational consulting firms in Manchester	90
Defense organizational consulting firms in Bristol	61
Defense organizational consulting firms in Edinburgh	47
Defense organizational consulting firms in Cambridge	43
Defense organizational consulting firms in Birmingham	43
Defense organizational consulting firms in Glasgow	37

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 “defense organizational 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; 12 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 defense organizational consulting firms are there based in the United Kingdom?

There are 4,144 defense organizational consulting firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most defense organizational consulting firms?

London leads with 1552 headquartered companies, followed by Manchester (90) and Bristol (61).

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 10,805 verified decision-maker contacts tracked across these 4,144 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.