Company lists · Data refreshed September 2026

Top 25 Merchandise security companies based in the United Kingdom

RevenueBase identified 768 merchandise security companies headquartered in the United Kingdom as of September 2026 and tracks 13,147 professional contacts across them, including 1,217 with verified work emails and 699 with mobile numbers. London is the largest hub.

This list covers merchandise security companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
768Companies
13,147Contacts tracked
1,217Verified emails
699Mobile numbers
Unlock all 768 companies Free signup · no credit card · 500 free credits

The 25 largest merchandise security companies based in the United Kingdom

Ranked by team size
Top 25 of 768 merchandise security companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names merchandise security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1London, United KingdomHQ checked Sep 5, 20265,001-10,0001,451

“TSS is the UK’s largest retail specialist security company, employing over 7500+ security personnel.”

Source: company website · checked Sep 5, 2026
2
SecurigroupPartial evidence
United KingdomHQ checked Sep 5, 20261,001-5,000765

“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: company website · checked Sep 5, 2026
3
InterrIndirect evidence
London, United KingdomHQ checked Sep 5, 20261,001-5,000232

“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: company website · checked Sep 5, 2026
4
The Brooknight GroupPartial evidence
Milton Keynes, United KingdomHQ checked Sep 5, 2026201-500166

“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: company website · checked Sep 5, 2026
5Sidcup, United KingdomHQ checked Sep 5, 2026201-500166

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

Source: company website · checked Sep 5, 2026
6
Premium Security ServicesPartial evidence
Acton, United KingdomHQ checked Sep 5, 202611-50148

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

Source: company website · checked Sep 5, 2026
7
Kingdom Security ServicesPartial evidence
Newton-le-willows, United KingdomHQ checked Sep 5, 20265,001-10,000126

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

Source: company website · checked Sep 5, 2026
8
City SecurityPartial evidence
Plympton, United KingdomHQ checked Sep 5, 202651-200105

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

Source: company website · checked Sep 5, 2026
9
Rossi SecurityPartial evidence
Mayfair, United KingdomHQ checked Sep 5, 2026201-50098

“Rossi Security have been providing Luxury Security services in London and Bicester Village, Oxfordshire since 2009.”

Source: company website · checked Sep 5, 2026
10
K4 Security - K4 GroupPartial evidence
Hounslow, United KingdomHQ checked Sep 5, 2026201-50089

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

Source: company website · checked Sep 5, 2026
11Whiteley, United KingdomHQ checked Sep 5, 2026501-1,00087

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

Source: company website · checked Sep 5, 2026
12
Northern Security LTDPartial evidence
Carlisle, United KingdomHQ checked Sep 5, 2026201-50069

“Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.”

Source: company website · checked Sep 5, 2026
13
Britsafe LimitedPartial evidence
Amy Johnson Way, United KingdomHQ checked Sep 5, 2026501-1,00066

“Welcome to Britsafe Limited Years of Security and Cleaning experience have made us masters in providing defect-free security and cleaning solutions tailor-made to suit the…”

Source: company website · checked Sep 5, 2026
14London, United KingdomHQ checked Sep 5, 2026201-50064

“City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…”

Source: company website · checked Sep 5, 2026
15
Sentinel Group SecurityPartial evidence
Loughton, United KingdomHQ checked Sep 5, 2026201-50060

“Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.”

Source: company website · checked Sep 5, 2026
16
Black Diamond SecurityPartial evidence
London, United KingdomHQ checked Sep 5, 2026201-50058

“Black Diamond Security - Safeguarding Your World.”

Source: company website · checked Sep 5, 2026
17Aldershot, United KingdomHQ checked Sep 5, 202651-20053

“Shield Security Services Limited was incorporated in 1986.”

Source: company website · checked Sep 5, 2026
18
Taybar Security LTDPartial evidence
Birmingham, United KingdomHQ checked Sep 5, 2026201-50052

“Taybar Security are a leading security services provider, that support a variety of businesses with their specific needs.”

Source: company website · checked Sep 5, 2026
19South Normanton, United KingdomHQ checked Sep 5, 2026201-50052

“Secur-it is a leading provider of security services and risk management.”

Source: company website · checked Sep 5, 2026
20
Portal SecurityPartial evidence
Cumbernauld, United KingdomHQ checked Sep 5, 2026201-50051

“Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.”

Source: company website · checked Sep 5, 2026
21High Wycombe, United KingdomHQ checked Sep 5, 202651-20046

“Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.”

Source: company website · checked Sep 5, 2026
22
UK Protection LTDPartial evidence
London, United KingdomHQ checked Sep 5, 2026201-50045

“UK Protection is widely recognised as the premier supplier of security solutions to the Corporate, Jewellery and Luxury Retail industries across the UK.”

Source: company website · checked Sep 5, 2026
23
Phoenix FMSPartial evidence
Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026201-50044

“Design, install and maintain CCTV Systems Intruder Systems Access Control Manned Security Guarding Event Stewarding Construction Cleaning Commercial Cleaning Builders & Sparkle…”

Source: company website · checked Sep 5, 2026
24
AIB GroupPartial evidence
Bletchley, United KingdomHQ checked Sep 5, 2026201-50043

“All in Black are an accredited security solutions provider with over 20 years’ experience at the highest level across the UK.”

Source: company website · checked Sep 5, 2026
25London, United KingdomHQ checked Sep 5, 2026501-1,00043

“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.”

Source: company website · checked Sep 5, 2026

Showing 25 of 768 merchandise security companies based in the United Kingdom

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Merchandise security companies based in the United Kingdom at a glance

As of Sep 5, 2026
11-50Median size (employees)
LondonLargest hub · 171 HQs
699Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
222
11-50
250
51-200
204
201-500
58
501-1,000
11
1,001-5,000
10
5,001-10,000
3
10001+
2

Verified emails by last verification

0–30
1,142
31–60
69
61–90
0
90–180
1
180+
5

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 merchandise security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “merchandise security companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among merchandise security companies, 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 an evidence 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, 1,217 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 5, 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.

Merchandise security companies by metro

  • Merchandise security companies in London171
  • Merchandise security companies in Birmingham27

Frequently asked

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

RevenueBase identified 768 merchandise security companies 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?

TSS Total Security Services LTD, headquartered in London, tops this list with the largest team on record.

Which city has the most merchandise security companies?

London leads with 171 headquartered companies, followed by Birmingham (27) and Manchester (22).

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 1,217 verified decision-maker contacts tracked across these 768 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 5, 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.