Company lists · Data refreshed September 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 Sep 4, 2026 8,172 companies tracked

RevenueBase identified 8,172 intelligence and security consultants worldwide as of September 2026 and tracks 199,482 professional contacts across them, including 23,878 with verified work emails and 28,021 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers intelligence and security consultants worldwide, 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 4, 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 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 4, 2026 86% judged on-target in blind review

8,172Companies

199,482Contacts tracked

23,878Verified emails

28,021Mobile numbers

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The 25 largest intelligence and security consultants worldwide

Ranked by team size

Top 25 of 8,172 intelligence and security consultants worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to intelligence and security consultants: 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	G4s	Partial evidence	London, United KingdomHQ checked Sep 4, 2026	10001+	79,344 contacts →
	Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 4, 2026
2	Securitas Seguridad España	Partial evidence	Madrid, SpainHQ checked Sep 4, 2026	10001+	3,616 contacts →
	Partial evidence “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Source: RevenueBase Database · checked Sep 4, 2026
3	U.S. Security Associates, INC	Indirect evidence	Roswell, UT, United StatesHQ checked Sep 4, 2026	10001+	3,600 contacts →
	Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 4, 2026
4	Control Risks	Partial evidence	London, United KingdomHQ checked Sep 4, 2026	1,001-5,000	2,955 contacts →
	Partial evidence “Control Risks is a global specialist risk consultancy that helps to create secure, compliant and resilient organisations.” Source: RevenueBase Database · checked Sep 4, 2026
5	Systems Planning & Analysis	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,082 contacts →
	Partial evidence “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Source: RevenueBase Database · checked Sep 4, 2026
6	Crisis24	Indirect evidence	Annapolis, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,077 contacts →
	Indirect evidence “Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Source: RevenueBase Database · checked Sep 4, 2026
7	Paragon Systems INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	10001+	1,946 contacts →
	Partial evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 4, 2026
8	Mitie Security	Strong evidence	Northampton, United KingdomHQ checked Sep 4, 2026	10001+	1,513 contacts →
	Strong evidence “We are an intelligence-led security business.” Source: RevenueBase Database · checked Sep 4, 2026
9	Icts Europe	Partial evidence	FranceHQ checked Sep 4, 2026	10001+	1,453 contacts →
	Partial evidence “ICTS Europe is Europe’s leading security specialist.” Source: RevenueBase Database · checked Sep 4, 2026
10	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Sep 4, 2026	501-1,000	1,378 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 4, 2026
11	First Security Group LLC	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 4, 2026	5,001-10,000	1,374 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 4, 2026
12	IEM	Indirect evidence	Morrisville, LA, United StatesHQ checked Sep 4, 2026	501-1,000	1,173 contacts →
	Indirect evidence “IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Source: RevenueBase Database · checked Sep 4, 2026
13	Andrews International	Partial evidence	Burbank, CA, United StatesHQ checked Sep 4, 2026	10001+	1,084 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 4, 2026
14	Brosnan Risk Consultants	Strong evidence	Pearl River, CA, United StatesHQ checked Sep 4, 2026	5,001-10,000	1,047 contacts →
	Strong evidence “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: RevenueBase Database · checked Sep 4, 2026
15	ROKE	Strong evidence	Romsey, United KingdomHQ checked Sep 4, 2026	1,001-5,000	684 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 4, 2026
16	Omniplex World Services Corporation	Strong evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	682 contacts →
	Strong evidence “OMNIPLEX World Services Corporation is a leader and innovator in delivering professional background investigations, intelligence support, and physical security services to…” Source: RevenueBase Database · checked Sep 4, 2026
17	Centerra Group	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	5,001-10,000	642 contacts →
	Indirect evidence “Centerra is a Constellis company.” Source: RevenueBase Database · checked Sep 4, 2026
18	Halogen Group	Partial evidence	Lagos, NigeriaHQ checked Sep 4, 2026	501-1,000	642 contacts →
	Partial evidence “Halogen Group formerly known as Halogen Security Company Limited is the leading Security Solutions Provider in West Africa.” Source: RevenueBase Database · checked Sep 4, 2026
19	Sallyport Global	Partial evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	629 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 4, 2026
20	Icts UK & Ireland	Partial evidence	London, United KingdomHQ checked Sep 4, 2026	1,001-5,000	593 contacts →
	Partial evidence “Part of ICTS Europe Group, ICTS UK & Ireland is a professional services firm which has been specialised in security risk for the past 38+ years.” Source: RevenueBase Database · checked Sep 4, 2026
21	MSA Security	Indirect evidence	New York, NY, United StatesHQ checked Sep 4, 2026	10001+	572 contacts →
	Indirect evidence “Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Source: RevenueBase Database · checked Sep 4, 2026
22	Security Alliance	Partial evidence	Miami, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	551 contacts →
	Partial evidence “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Source: RevenueBase Database · checked Sep 4, 2026
23	BOB Morgan Services Ltd. BM Security	Partial evidence	Nairobi, KenyaHQ checked Sep 4, 2026	1,001-5,000	533 contacts →
	Partial evidence “BM Security was founded by the late senior assistant commissioner of Police Bob Morgan in 1984.” Source: RevenueBase Database · checked Sep 4, 2026
24	Byblos Group	Indirect evidence	Lissieu, FranceHQ checked Sep 4, 2026	1,001-5,000	529 contacts →
	Indirect evidence “Byblos Group est un groupe indépendant spécialisé dans la protection des personnes, des biens et des données, avec une approche sur mesure, fondée sur l’excellence opérationnelle…” Source: RevenueBase Database · checked Sep 4, 2026
25	Ranger American	Partial evidence	San Juan, United StatesHQ checked Sep 4, 2026	1,001-5,000	511 contacts →
	Partial evidence “Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Source: RevenueBase Database · checked Sep 4, 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: intelligence and security consultants. 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 intelligence and security consultants.
Partial evidence: Its own public description names part of intelligence and security consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name intelligence and security consultants. 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 8,172 intelligence and security consultants worldwide

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Intelligence and security consultants worldwide at a glance

As of Sep 4, 2026

12.0%Verified-email coverage

14.0%Mobile-number coverage

24.4Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · London

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

4,561

11-50

2,292

51-200

816

201-500

248

501-1,000

1,001-5,000

5,001-10,000

10001+

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 intelligence and security consultants, 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.
Coverage: 34 countries, largest first: the United States, the United Kingdom, France, Australia, Brazil, India, Canada, Germany, Italy, Mexico and 24 more. Country and city lists for intelligence and security consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “intelligence and security consultants”. 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 intelligence and security consultants), 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 intelligence and security consultants, and records with no verified work email.
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, 23,878 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 between September 4, 2026 and September 14, 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.

Intelligence and security consultants by location

65 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 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 intelligence and security consultants, 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 intelligence and security consultants are there worldwide?

RevenueBase identified 8,172 intelligence and security consultants worldwide 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?

G4s, headquartered in Albertslund, tops this list with the largest team on record.

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 456 headquartered companies, followed by Paris (146) and Washington (132).

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 23,878 verified decision-maker contacts tracked across these 8,172 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 4, 2026 and September 14, 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.