Company lists · Data refreshed October 2026

Top 25 Intelligence and security consultants worldwide

Name: Intelligence and security consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 11,344 companies tracked

RevenueBase identified 11,344 company matches for intelligence and security consultants worldwide as of October 2026 and tracks 228,219 professional contacts across them, including 29,160 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for intelligence and security consultants worldwide, 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 October 1, 2026. Country and city lists for intelligence and security consultants follow the table.

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 Oct 1, 2026 How this list was built

11,344Companies

228,219Contacts tracked

29,160Verified emails

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The 25 largest intelligence and security consultants worldwide

Ranked by team size

Top 25 of 11,344 company matches for intelligence and security consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	G4s	Exact match	London, United KingdomHQ recorded Oct 1, 2026	10001+	79,699 contacts →
	Exact match “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Securitas Seguridad España	Exact match	Madrid, SpainHQ recorded Oct 1, 2026	10001+	3,620 contacts →
	Exact match “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	U.S. Security Associates, INC	Exact match	Roswell, GA, United StatesHQ recorded Oct 1, 2026	10001+	3,592 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Control Risks	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,972 contacts →
	Exact match “Control Risks is a global specialist risk consultancy that helps to create secure, compliant and resilient organisations.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	BAE Systems Digital Intelligence	Exact match	Canberra, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,947 contacts →
	Exact match “Digital Intelligence is home to over 4,500 digital, cyber and intelligence experts across 13 countries.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Systems Planning & Analysis	Exact match	Alexandria, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,092 contacts →
	Exact match “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Crisis24	Exact match	Annapolis, MD, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,025 contacts →
	Exact match “Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	10001+	1,949 contacts →
	Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Mitie Security	Exact match	Northampton, United KingdomHQ recorded Oct 1, 2026	10001+	1,508 contacts →
	Exact match “We are an intelligence-led security business.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Icts Europe	Exact match	Bp12936, FranceHQ recorded Oct 1, 2026	10001+	1,455 contacts →
	Exact match “ICTS Europe is Europe’s leading security specialist.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Oct 1, 2026	501-1,000	1,378 contacts →
	Exact match “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	First Security Group LLC	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	5,001-10,000	1,374 contacts →
	Exact match “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	IEM	Exact match	Morrisville, NC, United StatesHQ recorded Oct 1, 2026	501-1,000	1,175 contacts →
	Exact match “IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Oct 1, 2026	10001+	1,081 contacts →
	Exact match “Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Brosnan Risk Consultants	Exact match	Pearl River, NY, United StatesHQ recorded Oct 1, 2026	5,001-10,000	1,050 contacts →
	Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Nightwing	Exact match	United StatesHQ recorded Oct 1, 2026	1,001-5,000	916 contacts →
	Exact match “We are the intelligence services company that continually redefines the edge of the possible to keep advancing our national security interests.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Odyssey Systems	Exact match	Wakefield, MA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	906 contacts →
	Exact match “Odyssey is a leading provider of outstanding management, analytical, and technical support services to both the government and private sectors.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	AEGIS	Exact match	United StatesHQ recorded Oct 1, 2026	1,001-5,000	781 contacts →
	Exact match “AEGIS is a London based, privately owned, British security and risk management company with overseas offices in Afghanistan, Bahrain, Iraq and the USA.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	PSU	Exact match	Beijing, ChinaHQ recorded Oct 1, 2026	n/a	771 contacts →
	Exact match “Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	ROKE	Exact match	Romsey, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	679 contacts →
	Exact match “At Roke, we stand at the forefront of defence and security, delivering cutting-edge intelligence and engineering solutions that protect nations, troops, borders, and businesses.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Omniplex World Services Corporation	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	677 contacts →
	Exact match “OMNIPLEX World Services Corporation is a leader and innovator in delivering professional background investigations, intelligence support, and physical security services to…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Halogen Group	Exact match	Lagos, NigeriaHQ recorded Oct 1, 2026	501-1,000	642 contacts →
	Exact match “Halogen Group formerly known as Halogen Security Company Limited is the leading Security Solutions Provider in West Africa.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Sallyport Global	Exact match	Reston, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	629 contacts →
	Exact match “Sallyport Global a Caliburn company is a global provider of a full spectrum of security and mission support solutions tailored to enable global security and stability operations.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Icts UK & Ireland	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	597 contacts →
	Exact match “Part of ICTS Europe Group, ICTS UK & Ireland is a professional services firm which has been specialised in security risk for the past 39+ years.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	MSA Security	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	10001+	571 contacts →
	Exact match “Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Recorded in the RevenueBase company graph · Oct 1, 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 “intelligence and security consultants”. 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 25 of 11,344 intelligence and security consultants worldwide

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Intelligence and security consultants worldwide at a glance

As of Oct 1, 2026

12.8%Verified-email coverage

20.1Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

6,524

11-50

3,077

51-200

1,084

201-500

337

501-1,000

128

1,001-5,000

134

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for intelligence and security consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “intelligence and security consultants” 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. 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 29,160 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 October 1, 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.

Intelligence and security consultants by location

73 lists · largest first

Every Intelligence and security consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “intelligence and security consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many intelligence and security consultants are there worldwide?

RevenueBase identified 11,344 company matches for intelligence and security consultants worldwide as of October 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?

G4s tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most intelligence and security consultants?

The United States leads with 2,677 companies, followed by the United Kingdom (1,179) and France (390). Every intelligence and security consultants list by country and city is linked on this page.

Which city has the most intelligence and security consultants?

London leads with 479 company records, followed by Paris (149) and Washington (141).

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 29,160 professional contacts with verified work emails tracked across these 11,344 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 October 1, 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.