Company lists · Data refreshed September 2026

Top 25 Security guard service providers based in the United Kingdom

RevenueBase identified 1,495 security guard service providers headquartered in the United Kingdom as of September 2026 and tracks 21,756 professional contacts across them, including 2,005 with verified work emails. London is the largest hub.

This list covers security guard service providers headquartered in the United Kingdom, 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 29, 2026.

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 29, 2026 86% judged on-target in blind review
1,495Companies
21,756Contacts tracked
2,005Verified emails
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The 25 largest security guard service providers based in the United Kingdom

Ranked by team size
Top 25 of 1,495 security guard service providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to security guard service providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNorthampton, United KingdomHQ checked Sep 29, 20265,001-10,000852 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 29, 20261,001-5,000847 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceUnited KingdomHQ checked Sep 29, 20261,001-5,000765 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceManchester, United KingdomHQ checked Sep 29, 20261,001-5,000649 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceSwindon, United KingdomHQ checked Sep 29, 2026501-1,000392 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceBraintree, United KingdomHQ checked Sep 29, 20261,001-5,000326 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceLondon, United KingdomHQ checked Sep 29, 20261,001-5,000272 contacts →

Partial evidence

“VPS is Europe’s leading temporary security specialist, protecting vacant properties, remote sites, construction and infrastructure projects with tailored, risk-based security…”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceLondon, United KingdomHQ checked Sep 29, 20261,001-5,000232 contacts →

Indirect evidence

“Established in 1994, Interr is a specialist agency providing intelligent guarding, reception, remote monitoring & response and front of house solutions within the retail, hotel…”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceShirley, United KingdomHQ checked Sep 29, 20261,001-5,000226 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceBexleyheath, United KingdomHQ checked Sep 29, 2026501-1,000206 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceLeeds, United KingdomHQ checked Sep 29, 20261,001-5,000180 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceMiddx, United KingdomHQ checked Sep 29, 2026201-500175 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceMilton Keynes, United KingdomHQ checked Sep 29, 2026201-500166 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
14Partial evidenceSidcup, United KingdomHQ checked Sep 29, 2026201-500166 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-200163 contacts →

Partial evidence

“Get Licensed is the UK's leading provider of security training, screening, and staffing solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceManchester, United KingdomHQ checked Sep 29, 202651-200153 contacts →

Partial evidence

“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.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-200137 contacts →

Partial evidence

“The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidencePortsmouth, United KingdomHQ checked Sep 29, 2026201-500127 contacts →

Partial evidence

“Vespasian Security was formed in February 2006.”

Source: RevenueBase Database · checked Sep 29, 2026
19Partial evidenceNewton-le-willows, United KingdomHQ checked Sep 29, 20265,001-10,000126 contacts →

Partial evidence

“About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceHornchurch, United KingdomHQ checked Sep 29, 2026501-1,000111 contacts →

Indirect evidence

“We are a well-established company that supplies specialist Close Protection, Door Supervisor services to Private Individuals, Visiting Royal Families, Government Officials…”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidencePlympton, United KingdomHQ checked Sep 29, 202651-200105 contacts →

Partial evidence

“City Security understands that our staff are the first and last person a patron encounters on their visit to a venue.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceHounslow, United KingdomHQ checked Sep 29, 2026201-50089 contacts →

Partial evidence

“For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceWhiteley, United KingdomHQ checked Sep 29, 2026501-1,00087 contacts →

Partial evidence

“Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceSeaton Burn, United KingdomHQ checked Sep 29, 2026501-1,00080 contacts →

Partial evidence

“T3 Security is a leading National Security Company supplying clients across the UK with bespoke security services.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceWoodford Green, United KingdomHQ checked Sep 29, 202651-20078 contacts →

Indirect evidence

“We are an SIA Approved Contractor, specializing in Manned Guarding and CCTV solutions.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 1,495 security guard service providers based in the United Kingdom

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Security guard service providers based in the United Kingdom at a glance

As of Sep 29, 2026
9.2%Verified-email coverage
14.6Average contacts per company
11-50Median size (employees)
23.9%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
449
11-50
495
51-200
381
201-500
105
501-1,000
21
1,001-5,000
22
5,001-10,000
4
10001+
3

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 1,495 companies.

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 security guard service providers, 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.
What qualifies
Companies headquartered in the United Kingdom whose own description of what they do matches “security guard service providers”. 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 security guard service providers), 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 security guard service providers, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
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, 2,005 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 on September 29, 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.

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 security guard service providers, 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 security guard service providers are there based in the United Kingdom?

RevenueBase identified 1,495 security guard service providers headquartered in the United Kingdom 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?

VSG Vision Security Group, headquartered in Northampton, tops this list with the largest team on record.

Which city has the most security guard service providers?

London leads with 358 headquartered companies, followed by Birmingham (47) and Manchester (47).

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 2,005 verified decision-maker contacts tracked across these 1,495 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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.