Company lists · Data refreshed September 2026

Top 20 Defense organizational consulting firms based in London, United Kingdom

Name: Defense organizational consulting firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 1,586 companies tracked

RevenueBase identified 1,586 company matches for defense organizational consulting firms associated with London, United Kingdom as of September 2026 and tracks 20,568 professional contacts across them, including 8,956 with verified work emails and 1,829 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for defense organizational consulting firms associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 10, 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 RevenueBase SmartSearch · Exact Recorded Sep 10, 2026 How this list was built

1,586Companies

20,568Contacts tracked

8,956Verified emails

1,829Mobile numbers

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The 20 largest defense organizational consulting firms based in London, United Kingdom

Ranked by team size

Top 20 of 1,586 company matches for defense organizational consulting firms based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 10, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Baringa	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1,001-5,000	2,179 contacts →
	Exact match “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
2	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 10, 2026	501-1,000	1,011 contacts →
	Exact match “At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
3	Mercer UK	Exact match	London, United KingdomHQ recorded Sep 10, 2026	10001+	329 contacts →
	Exact match “At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
4	Elixirr	Exact match	London, United KingdomHQ recorded Sep 10, 2026	501-1,000	275 contacts →
	Exact match “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
5	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Sep 10, 2026	201-500	247 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
6	YSC Consulting, Part Of Accenture	Exact match	London, United KingdomHQ recorded Sep 10, 2026	201-500	227 contacts →
	Exact match “YSC Consulting, now part of Accenture, is a leadership strategy consultancy.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
7	Green Park	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	187 contacts →
	Exact match “Green Park is a specialist executive search and advisory firm trusted by organisations seeking stronger, more future-ready leadership.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
8	SHM Productions LTD	Exact match	London, United KingdomHQ recorded Sep 10, 2026	n/a	186 contacts →
	Exact match “SHM is a small consulting firm based in London.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
9	ORG	Exact match	London, United KingdomHQ recorded Sep 10, 2026	1,001-5,000	139 contacts →
	Exact match “We believe that change is an opportunity to thrive.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
10	Trpglobal	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	126 contacts →
	Exact match “We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
11	Athens	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	122 contacts →
	Exact match “Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
12	Oaklin	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	115 contacts →
	Exact match “Oaklin is an independent management consultancy.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
13	Valentia Partners	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	94 contacts →
	Exact match “Valentia Partners is a specialist Management Consulting firm.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
14	Stellarmann	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	87 contacts →
	Exact match “Complex transformation, expertly navigated.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
15	Cambridge Management Consulting	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	82 contacts →
	Exact match “Cambridge Management Consulting (Cambridge MC) is an international consulting firm that helps companies of all sizes have a better impact on the world.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
16	Principle ONE	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	78 contacts →
	Exact match “Principle One provides Systems Engineering, Architecture and Business Consulting services within the Law Enforcement, National Security, Health and wider public sector.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
17	Eden Mccallum	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	75 contacts →
	Exact match “We redefined management consulting to make it better for clients and better for consultants.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
18	Change Management Group	Exact match	London, United KingdomHQ recorded Sep 10, 2026	51-200	74 contacts →
	Exact match “Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
19	FIERI	Exact match	London, United KingdomHQ recorded Sep 10, 2026	11-50	72 contacts →
	Exact match “In a world of constant transformation, leadership capability is one of the biggest determinants of whether strategy succeeds or stalls.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
20	6point6 Part Of Accenture	Exact match	London, United KingdomHQ recorded Sep 10, 2026	201-500	68 contacts →
	Exact match “6point6 drives the right change in an organisation through the positive impact of technology.” Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “defense organizational consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 1,586 defense organizational consulting firms based in London, United Kingdom

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Defense organizational consulting firms based in London, United Kingdom at a glance

As of Sep 10, 2026

43.5%Verified-email coverage

8.9%Mobile-number coverage

13.0Average contacts per company

1-10Median size (employees)

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

1,192

11-50

289

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 12.0d

8,1300–30

70931–60

061–90

390–180

114180+

Company record updated

Median 61.0d

00–30

9,93031–60

7,30061–90

1,90990–180

1,429180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with London, United Kingdom whose business descriptions match “defense organizational consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 8,956 professional contacts with verified work emails across the full matched dataset. 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 10, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Defense organizational consulting firms by metro in the United Kingdom

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “defense organizational consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense organizational consulting firms are there based in London, United Kingdom?

RevenueBase identified 1,586 company matches for defense organizational consulting firms associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Baringa tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most defense organizational consulting firms?

London leads the United Kingdom with 1,552 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 8,956 professional contacts with verified work emails tracked across these 1,586 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 10, 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.