Company lists · Data refreshed September 2026

Top 25 Perimeter security companies based in the United Kingdom

Name: Perimeter security companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 374 companies tracked

RevenueBase identified 374 perimeter security companies headquartered in the United Kingdom as of September 2026 and tracks 3,517 professional contacts across them, including 1,457 with verified work emails and 181 with mobile numbers. London is the largest hub.

This list covers perimeter 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

374Companies

3,517Contacts tracked

1,457Verified emails

181Mobile numbers

Explore all 374 companies → Free signup · no credit card · 500 free credits

The 25 largest perimeter security companies based in the United Kingdom

Ranked by team size

Top 25 of 374 perimeter 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 perimeter 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.
#	Company	Headquarters	Employees	Contacts
1	Kings Secure TechnologiesIndirect evidence	Bradford, United KingdomHQ checked Sep 5, 2026	501-1,000	326
	“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: company website · checked Sep 5, 2026
2	Betafence GroupPartial evidence	Leeds, United KingdomHQ checked Sep 5, 2026	1,001-5,000	220
	“Betafence - Global Leader in Perimeter Protection For over 145 years, Betafence has been a trusted partner in perimeter protection, providing high-quality fencing and industrial…” Source: company website · checked Sep 5, 2026
3	QCICPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	159
	“QCIC is an award-winning global engineering firm specialising in designing, building and running security systems.” Source: company website · checked Sep 5, 2026
4	PræsidiadStrong evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	136
	“PRÆSIDIAD is a world market leader of force protection solutions,integrated perimeter security systems and industrial mesh production and fencing products.” Source: company website · checked Sep 5, 2026
5	Total Security Protection LTDPartial evidence	Watford, United KingdomHQ checked Sep 5, 2026	51-200	116
	“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
6	Frontier Pitts LTDPartial evidence	Crawley, United KingdomHQ checked Sep 5, 2026	51-200	89
	“The British manufacturer of Security Gates, Barriers, Blockers, Bollards & Turnstiles.” Source: company website · checked Sep 5, 2026
7	Croma Security Solutions Group PLC CssgPartial evidence	Whiteley, United KingdomHQ checked Sep 5, 2026	501-1,000	87
	“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
8	RHI Industrials LTDPartial evidence	Matfen, United KingdomHQ checked Sep 5, 2026	51-200	71
	“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
9	CLD Physical Security SystemsPartial evidence	Sandbach, United KingdomHQ checked Sep 5, 2026	51-200	64
	“We are a globally recognised leader in design-led physical security solutions.” Source: company website · checked Sep 5, 2026
10	Barkers FencingPartial evidence	Stoke-On-Trent, United KingdomHQ checked Sep 5, 2026	51-200	61
	“Impartially delivering resilient security fencing for professionals serious about protecting people, property and reputations.” Source: company website · checked Sep 5, 2026
11	Custom Intelligent SecurityPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	51
	“Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Source: company website · checked Sep 5, 2026
12	Electranet UK LimitedIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	49
	“Electranet’s mission is to be a preferred partner to the public and private sectors, bringing competitively priced, secure and innovative solutions to the market.” Source: company website · checked Sep 5, 2026
13	Optyma Security Systems LTDPartial evidence	Bexleyheath, United KingdomHQ checked Sep 5, 2026	51-200	44
	“Since 1987 Optyma Integrated Security Systems have been successfully delivering complex integrated security projects using the latest technology.” Source: company website · checked Sep 5, 2026
14	Crime And Fire Defence Systems LTDPartial evidence	Wakefield, United KingdomHQ checked Sep 5, 2026	11-50	43
	“Established since 1994, Crime and Fire delivers state-of-the-art cost-effective security solutions, to the highest quality and safety standards.” Source: company website · checked Sep 5, 2026
15	Atec SecurityPartial evidence	Wolverhampton, United KingdomHQ checked Sep 5, 2026	51-200	40
	“ATEC are here to make your business safe, giving you the confidence in the security of your business so It can thrive every day, now and long into the future.” Source: company website · checked Sep 5, 2026
16	Gratte Brothers Security Systems & SoftwarePartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	39
	“Gratte Brothers is an experienced provider of integrated security solutions, which are Built on Strong Values and ultimately deliver a measurable return on investment.” Source: company website · checked Sep 5, 2026
17	Clearview CommunicationsPartial evidence	Chelmsford, United KingdomHQ checked Sep 5, 2026	51-200	38
	“Since 1996, ClearView has been meeting some of the world's most demanding security requirements by utilising our experience in design, manufacture, installation and service of the…” Source: company website · checked Sep 5, 2026
18	Alexandra SecurityPartial evidence	Tonbridge, United KingdomHQ checked Sep 5, 2026	51-200	33
	“Your site's protection starts at the perimeter.” Source: company website · checked Sep 5, 2026
19	Pafi LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	32
	“Pafi Ltd, Was formed in 1995 to design, install and maintain integrated security solutions for the commercial market.” Source: company website · checked Sep 5, 2026
20	Procter Brothers LTDIndirect evidence	Caerphilly, United KingdomHQ checked Sep 5, 2026	51-200	30
	“Procter Brothers Ltd benefits from unrivalled expertise in its three specialisms, combining the best aspects of traditional craftsmanship and care for customers and employees…” Source: company website · checked Sep 5, 2026
21	WRS SolutionsPartial evidence	Mexborough, United KingdomHQ checked Sep 5, 2026	11-50	25
	“At WRS Solutions, we specialise in delivering tailored electronic security systems that provide real peace of mind.” Source: company website · checked Sep 5, 2026
22	Link Integrated Security Solutions LimitedPartial evidence	Mansfield, United KingdomHQ checked Sep 5, 2026	11-50	25
	“Security and Investigations company” Source: company website · checked Sep 5, 2026
23	Reflex Systems LTDPartial evidence	Rotherham, United KingdomHQ checked Sep 5, 2026	11-50	24
	“Reflex Systems is a leading UK owned security and fire systems specialist, established in 1987 and based in South Yorkshire.” Source: company website · checked Sep 5, 2026
24	1st ACE SecurityPartial evidence	Bromley, United KingdomHQ checked Sep 5, 2026	51-200	24
	“At 1st Ace Security we are specialists in providing security solutions across South London for both domestic and commercial properties.” Source: company website · checked Sep 5, 2026
25	CES Security Solutions LTDIndirect evidence	Rochester, United KingdomHQ checked Sep 5, 2026	11-50	24
	“More than just a manufacturer, we offer a full service.” Source: company website · checked Sep 5, 2026

Showing 25 of 374 perimeter security companies based in the United Kingdom

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Perimeter security companies based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 38 HQs

181Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

191

11-50

133

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

1,352

31–60

100

61–90

90–180

180+

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 perimeter 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 “perimeter 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 perimeter 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, 1,457 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.

Perimeter security companies by metro

Perimeter security companies in London38

Frequently asked

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

RevenueBase identified 374 perimeter 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?

Kings Secure Technologies, headquartered in Bradford, tops this list with the largest team on record.

Which city has the most perimeter security companies?

London leads with 38 headquartered companies, followed by Manchester (10) and Leeds (8).

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 1,457 verified decision-maker contacts tracked across these 374 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.