Company lists · Data refreshed September 2026

Top 25 Security management companies based in the United Kingdom

RevenueBase identified 2,438 company matches for security management companies associated with the United Kingdom as of September 2026 and tracks 115,299 professional contacts across them, including 3,833 with verified work emails. London is the largest hub.

This list covers company matches for security management companies associated with the 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 14, 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 14, 2026 How this list was built
2,438Companies
115,299Contacts tracked
3,833Verified emails
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The 25 largest security management companies based in the United Kingdom

Ranked by team size
Top 25 of 2,438 company matches for security management companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 14, 202610001+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 · Sep 14, 2026 · View company records in RevenueBase
2Exact matchLeicester, United KingdomHQ recorded Sep 14, 20261,001-5,0001,265 contacts →

Exact match

“With over 45 years of experience, Showsec is a leading name in the UK’s live event security sector.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 14, 20261,001-5,000919 contacts →

Exact match

“CIS Security is an independent security company equipped to help customers to solve the complex challenges in today’s digital, connected and regulated business world.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
4Exact matchNorthampton, United KingdomHQ recorded Sep 14, 20265,001-10,000852 contacts →

Exact match

“VSG are one of the UK's leading security solutions providers with a heritage in manned guarding.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 14, 20261,001-5,000847 contacts →

Exact match

“Corps Security - experts in security with social value Built on over 165 years of experience, Corps provides specialist security services, across the UK, to ensure the safety of…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6Exact matchUnited KingdomHQ recorded Sep 14, 20261,001-5,000765 contacts →

Exact match

“Ranked in the top 1% of UK security companies, as approved by the Security Industry Authority, SecuriGroup is an award-winning security company, specialising in the provision of…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
7Exact matchManchester, United KingdomHQ recorded Sep 14, 20261,001-5,000649 contacts →

Exact match

“Established in 2003, FGH are trusted by international brands to keep their assets and millions of people safe every year.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 14, 20261,001-5,000597 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 · Sep 14, 2026 · View company records in RevenueBase
9Exact matchCirencester, United KingdomHQ recorded Sep 14, 20261,001-5,000422 contacts →

Exact match

“Unlike traditional security providers, we're redefining what protection means in today's world.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 14, 20261,001-5,000419 contacts →

Exact match

“Ward is an award winning, privately owned business, providing bespoke risk and security solutions including protective security personnel, explosive search dogs, narcotic search…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11Exact matchSwindon, United KingdomHQ recorded Sep 14, 2026501-1,000392 contacts →

Exact match

“SSGC is a leading innovator in the Manned Guarding industry, specialising in the application of new technology to improve the performance of its Management team, deployed staff…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12Exact matchBraintree, United KingdomHQ recorded Sep 14, 20261,001-5,000326 contacts →

Exact match

“Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13Exact matchHarlow, United KingdomHQ recorded Sep 14, 20261,001-5,000285 contacts →

Exact match

“SES Group was founded in 1998 by Dr Tony Ball and rebranded as SES Group in 2014.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
14Exact matchLeeds, United KingdomHQ recorded Sep 14, 2026501-1,000246 contacts →

Exact match

“First Response Group (FRG) is one of the leading security, risk and FM providers in the UK delivering manned security, technology solutions, building management and vacant…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
15Exact matchShirley, United KingdomHQ recorded Sep 14, 20261,001-5,000226 contacts →

Exact match

“MAN Commercial is a leading security company and Training Academy based in Solihull, West Midlands.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
16Exact matchBexleyheath, United KingdomHQ recorded Sep 14, 2026501-1,000206 contacts →

Exact match

“Wise Security is a trusted provider of professional security, crowd management, and safety solutions for high‑profile events, venues, and organisations across the UK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
17Exact matchWoking, United KingdomHQ recorded Sep 14, 2026201-500205 contacts →

Exact match

“Pilgrims are a global security, risk management and service support company that identifies and manages risks for clients across all sectors, including oil & gas, telecoms…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
18Exact matchLeeds, United KingdomHQ recorded Sep 14, 20261,001-5,000180 contacts →

Exact match

“Established in 1978, Bridgegate Security is proud to be one of the UK’s largest independent security contractors.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
19Exact matchMiddx, United KingdomHQ recorded Sep 14, 2026201-500175 contacts →

Exact match

“We are able to supply a one stop security service for all types of security requirement.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
20Exact matchEnfield, United KingdomHQ recorded Sep 14, 2026501-1,000166 contacts →

Exact match

“We are GUK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
21Exact matchMilton Keynes, United KingdomHQ recorded Sep 14, 2026201-500166 contacts →

Exact match

“Providing Exceptional Security Services to Corporate and Retail Customers - Brooknight Security, with over 30 years of experience, is the go-to choice for businesses seeking…”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
22Exact matchSidcup, United KingdomHQ recorded Sep 14, 2026201-500166 contacts →

Exact match

“Trigion Security Services is the UK provider of Security Guarding and Technical Solutions for Facilicom UK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
23Exact matchSwindon, United KingdomHQ recorded Sep 14, 202651-200162 contacts →

Exact match

“One of the largest independent security companies in the UK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
24Exact matchManchester, United KingdomHQ recorded Sep 14, 202651-200153 contacts →

Exact match

“Capricorn Security Group has been a Security Industry Authority (SIA) approved contractor for over 9 years and is ranked in the top 5% of Security Companies in the UK.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
25Exact matchActon, United KingdomHQ recorded Sep 14, 202611-50148 contacts →

Exact match

“Premium Security Services (PSS) delivers expert security solutions across the leisure, retail, and commercial sectors.”

Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

Showing 25 of 2,438 security management companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 3,833 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security management companies based in the United Kingdom at a glance

As of Sep 14, 2026
3.3%Verified-email coverage
47.3Average contacts per company
11-50Median size (employees)
25.1%Largest-city concentration · London
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
896
11-50
755
51-200
541
201-500
147
501-1,000
37
1,001-5,000
34
5,001-10,000
4
10001+
7

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 2,438 companies.

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 the United Kingdom whose business descriptions match “security management companies” 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 3,833 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 14, 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.

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

How many security management companies are there based in the United Kingdom?

RevenueBase identified 2,438 company matches for security management companies associated with the 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?

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

Which city has the most security management companies?

London leads with 613 company records, followed by Birmingham (64) and Manchester (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 3,833 professional contacts with verified work emails tracked across these 2,438 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 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 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.