Company lists · Data refreshed September 2026

Top 25 Physical security system companies based in the United Kingdom

RevenueBase identified 1,745 physical security system companies headquartered in the United Kingdom as of September 2026 and tracks 19,511 professional contacts across them, including 7,337 with verified work emails and 859 with mobile numbers. London is the largest hub.

This list covers physical security system 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
1,745Companies
19,511Contacts tracked
7,337Verified emails
859Mobile numbers
Unlock all 1,745 companies Free signup · no credit card · 500 free credits

The 25 largest physical security system companies based in the United Kingdom

Ranked by team size
Top 25 of 1,745 physical security system 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 physical security system 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
1
Chubb Fire & SecurityIndirect evidence
Staines, United KingdomHQ checked Sep 5, 202610001+6,169

“Making the world a safer place.”

Source: company website · checked Sep 5, 2026
2
Global SecurityStrong evidence
Blackburn, United KingdomHQ checked Sep 5, 2026n/a393

“At Global Security Ltd, we are proud to be one of the UK’s trusted suppliers of CCTV, intruder alarms, access control, and fire safety systems.”

Source: company website · checked Sep 5, 2026
3
Marlowe Fire & SecurityPartial evidence
Manchester, United KingdomHQ checked Sep 5, 2026501-1,000389

“Mitie Fire & Security is part of Mitie, the UK’s leading facilities management and professional services company, delivering integrated fire and security solutions that protect…”

Source: company website · checked Sep 5, 2026
4Exeter, United KingdomHQ checked Sep 5, 2026501-1,000386

“Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…”

Source: company website · checked Sep 5, 2026
5
Kings Secure TechnologiesPartial evidence
Bradford, United KingdomHQ checked Sep 5, 2026501-1,000326

“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.”

Source: company website · checked Sep 5, 2026
6Romford, United KingdomHQ checked Sep 5, 2026201-500200

“OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…”

Source: company website · checked Sep 5, 2026
7
Texecom LTDIndirect evidence
Haslingden, United KingdomHQ checked Sep 5, 2026201-500170

“Looking after the things people care about, wherever they are’.”

Source: company website · checked Sep 5, 2026
8
Norbain SDPartial evidence
Bracknell, United KingdomHQ checked Sep 5, 202651-200157

“Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.”

Source: company website · checked Sep 5, 2026
9
Gough & KellyPartial evidence
Leeds, United KingdomHQ checked Sep 5, 202651-200157

“A premier provider of security products and services across England, Gough & Kelly was formed in 1988 to influence and inspire the security and electrical marketplace by providing…”

Source: company website · checked Sep 5, 2026
10Chalfont St Peter, United KingdomHQ checked Sep 5, 202651-200145

“Frontline Security Solutions is a global electronic security integrator specialising in Access Control, CCTV, Intruder and Intercom systems that protect people, property and…”

Source: company website · checked Sep 5, 2026
11Nottingham, United KingdomHQ checked Sep 5, 202651-200119

“Global Fire and Security Systems are market leaders in providing quality product solutions to services through the Fire and Security market place nationwide.”

Source: company website · checked Sep 5, 2026
12Watford, United KingdomHQ checked Sep 5, 202651-200116

“TSP has a reputation for providing enterprise security solutions, as well as excellent system integration standards and exceptional aftercare support, since its founding in 1988.”

Source: company website · checked Sep 5, 2026
13
Senseco Systems LimitedStrong evidence
Gillingham, United KingdomHQ checked Sep 5, 2026201-500107

“Senseco Systems Limited is the UK’s largest and highest accredited independent fire and security company, delivering integrated life safety and security solutions across complex…”

Source: company website · checked Sep 5, 2026
14Mansfield, United KingdomHQ checked Sep 5, 202651-20094

“Better protect your people, places and spaces.”

Source: company website · checked Sep 5, 2026
15Whiteley, 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
16
Scutum UKPartial evidence
Chertsey, United KingdomHQ checked Sep 5, 2026201-50087

“Scutum Fire & Security Ltd.”

Source: company website · checked Sep 5, 2026
17
Nationwide SecurityStrong evidence
St Albans, United KingdomHQ checked Sep 5, 202651-20081

“Nationwide Security providing both physical and electrical security services throughout the UK.”

Source: company website · checked Sep 5, 2026
18
Ea-RsPartial evidence
Witham, United KingdomHQ checked Sep 5, 2026501-1,00078

“EA-RS provides integrated fire, security, electrical and data solutions across the UK, acting as one trusted partner for all building protection needs.”

Source: company website · checked Sep 5, 2026
19
SPY Alarms LTDStrong evidence
Orpington, United KingdomHQ checked Sep 5, 2026201-50071

“Spy Alarms is probably the largest privately owned business installing security systems in the South East, started by Martin Foster after his own house was burgled and he could…”

Source: company website · checked Sep 5, 2026
20
RHI Industrials LTDStrong evidence
Matfen, United KingdomHQ checked Sep 5, 202651-20071

“RHI Industrials provide Physical and Electronic Security Solutions to the UK's major utility companies and partners: Critical National Infrastructure Facilities, Electricity…”

Source: company website · checked Sep 5, 2026
21
ABELStrong evidence
Leicester, United KingdomHQ checked Sep 5, 202651-20070

“With over 50 years’ experience in the security industry, Abel has grown to become one of the UK’s largest privately owned providers of electronic security systems.”

Source: company website · checked Sep 5, 2026
22
Bauwatch UK & IrelandPartial evidence
Northampton, United KingdomHQ checked Sep 5, 202651-20069

“BauWatch secures your site and assets with rapidly deployed mobile video surveillance systems.”

Source: company website · checked Sep 5, 2026
23Sandbach, United KingdomHQ checked Sep 5, 202651-20064

“We are a globally recognised leader in design-led physical security solutions.”

Source: company website · checked Sep 5, 2026
24
Alertsystems LTDStrong evidence
Trowbridge, United KingdomHQ checked Sep 5, 202651-20061

“AlertSystems specialise in the design, installation, service, and maintenance of commercial electronic security and fire safety systems.”

Source: company website · checked Sep 5, 2026
25
WLSPartial evidence
London, United KingdomHQ checked Sep 5, 202651-20061

“WLS (West London Security) has been providing security and solutions to London's homes and businesses for over 40 years.”

Source: company website · checked Sep 5, 2026

Showing 25 of 1,745 physical security system companies based in the United Kingdom

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Physical security system companies based in the United Kingdom at a glance

As of Sep 5, 2026
1-10Median size (employees)
LondonLargest hub · 180 HQs
859Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
1,024
11-50
550
51-200
122
201-500
16
501-1,000
7
1,001-5,000
2
10001+
1

Verified emails by last verification

0–30
6,903
31–60
410
61–90
3
90–180
2
180+
19

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 physical security system 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 “physical security system 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 physical security system 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, 7,337 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.

Physical security system companies by metro

  • Physical security system companies in London180
  • Physical security system companies in Manchester37

Frequently asked

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

RevenueBase identified 1,745 physical security system 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?

Chubb Fire & Security, headquartered in Staines, tops this list with the largest team on record.

Which city has the most physical security system companies?

London leads with 180 headquartered companies, followed by Manchester (37) and Birmingham (23).

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 7,337 verified decision-maker contacts tracked across these 1,745 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.

Ready to reach these companies? Verified emails and direct dials for all 1,745 physical security system companies based in the United Kingdom. Start with a free account, no credit card.

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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.