Company lists · Data refreshed September 2026

Top 25 Perimeter security integrators based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 569 companies tracked

RevenueBase identified 569 perimeter security integrators headquartered in the United Kingdom as of September 2026 and tracks 5,964 professional contacts across them, including 2,488 with verified work emails. London is the largest hub.

This list covers perimeter security integrators 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

569Companies

5,964Contacts tracked

2,488Verified emails

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The 25 largest perimeter security integrators based in the United Kingdom

Ranked by team size

Top 25 of 569 perimeter security integrators 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 perimeter security integrators: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Trinity Fire & Security Systems	Indirect evidence	Exeter, United KingdomHQ checked Sep 29, 2026	501-1,000	386 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026
2	Kings Secure Technologies	Partial evidence	Bradford, United KingdomHQ checked Sep 29, 2026	501-1,000	326 contacts →
	Partial evidence “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: RevenueBase Database · checked Sep 29, 2026
3	Betafence Group	Partial evidence	Leeds, United KingdomHQ checked Sep 29, 2026	1,001-5,000	220 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
4	Evolution Electronic Security Systems LTD	Strong evidence	Marlow, United KingdomHQ checked Sep 29, 2026	201-500	200 contacts →
	Strong evidence “Founded in 1996 we have grown into one of the UK and Ireland’s leading qualified and accredited security and fire systems integrators, working across Europe to bring together…” Source: RevenueBase Database · checked Sep 29, 2026
5	QCIC	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	159 contacts →
	Partial evidence “QCIC is an award-winning global engineering firm specialising in designing, building and running security systems.” Source: RevenueBase Database · checked Sep 29, 2026
6	Norbain SD	Partial evidence	Bracknell, United KingdomHQ checked Sep 29, 2026	51-200	157 contacts →
	Partial evidence “Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.” Source: RevenueBase Database · checked Sep 29, 2026
7	Pointer LTD	Strong evidence	Glasgow, United KingdomHQ checked Sep 29, 2026	51-200	153 contacts →
	Strong evidence “Pointer Limited We are a Specialist Fire and Security Services Integrator.” Source: RevenueBase Database · checked Sep 29, 2026
8	Frontline Security Solutions	Strong evidence	Chalfont St Peter, United KingdomHQ checked Sep 29, 2026	51-200	145 contacts →
	Strong evidence “Frontline Security Solutions is a global electronic security integrator specialising in Access Control, CCTV, Intruder and Intercom systems that protect people, property and…” Source: RevenueBase Database · checked Sep 29, 2026
9	Præsidiad	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	136 contacts →
	Strong evidence “PRÆSIDIAD is a world market leader of force protection solutions,integrated perimeter security systems and industrial mesh production and fencing products.” Source: RevenueBase Database · checked Sep 29, 2026
10	Total Security Protection LTD	Partial evidence	Watford, United KingdomHQ checked Sep 29, 2026	51-200	116 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
11	Littlewood Group	Indirect evidence	Battle, United KingdomHQ checked Sep 29, 2026	201-500	93 contacts →
	Indirect evidence “As part of the Network Plus Group, Littlewood Group is the UK’s leading fence installation and civil engineering contractor.” Source: RevenueBase Database · checked Sep 29, 2026
12	Frontier Pitts LTD	Partial evidence	Crawley, United KingdomHQ checked Sep 29, 2026	51-200	89 contacts →
	Partial evidence “The British manufacturer of Security Gates, Barriers, Blockers, Bollards & Turnstiles.” Source: RevenueBase Database · checked Sep 29, 2026
13	Croma Security Solutions Group PLC Cssg	Partial evidence	Whiteley, United KingdomHQ checked Sep 29, 2026	501-1,000	87 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
14	RHI Industrials LTD	Partial evidence	Matfen, United KingdomHQ checked Sep 29, 2026	51-200	71 contacts →
	Partial evidence “RHI Industrials provide Physical and Electronic Security Solutions to the UK's major utility companies and partners: Critical National Infrastructure Facilities, Electricity…” Source: RevenueBase Database · checked Sep 29, 2026
15	CLD Physical Security Systems	Partial evidence	Sandbach, United KingdomHQ checked Sep 29, 2026	51-200	64 contacts →
	Partial evidence “We are a globally recognised leader in design-led physical security solutions.” Source: RevenueBase Database · checked Sep 29, 2026
16	Barkers Fencing	Partial evidence	Stoke-On-Trent, United KingdomHQ checked Sep 29, 2026	51-200	61 contacts →
	Partial evidence “Impartially delivering resilient security fencing for professionals serious about protecting people, property and reputations.” Source: RevenueBase Database · checked Sep 29, 2026
17	Alphatrack Systems	Indirect evidence	Harlow, United KingdomHQ checked Sep 29, 2026	201-500	57 contacts →
	Indirect evidence “At Alphatrack Systems Ltd, we don’t just install equipment-we engineer integrated solutions that deliver safety, compliance, and ultimate peace of mind.” Source: RevenueBase Database · checked Sep 29, 2026
18	Custom Intelligent Security	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	51 contacts →
	Partial evidence “Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Source: RevenueBase Database · checked Sep 29, 2026
19	Electranet UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	49 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026
20	Optyma Security Systems LTD	Partial evidence	Bexleyheath, United KingdomHQ checked Sep 29, 2026	51-200	44 contacts →
	Partial evidence “Since 1987 Optyma Integrated Security Systems have been successfully delivering complex integrated security projects using the latest technology.” Source: RevenueBase Database · checked Sep 29, 2026
21	Crime And Fire Defence Systems LTD	Partial evidence	Wakefield, United KingdomHQ checked Sep 29, 2026	11-50	43 contacts →
	Partial evidence “Established since 1994, Crime and Fire delivers state-of-the-art cost-effective security solutions, to the highest quality and safety standards.” Source: RevenueBase Database · checked Sep 29, 2026
22	Ak9 Security And FM Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	43 contacts →
	Partial evidence “AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Source: RevenueBase Database · checked Sep 29, 2026
23	Atec Security	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 29, 2026	51-200	40 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
24	Gratte Brothers Security Systems & Software	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	39 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
25	Clearview Communications	Partial evidence	Chelmsford, United KingdomHQ checked Sep 29, 2026	51-200	38 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: perimeter security integrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names perimeter security integrators.
Partial evidence: Its own public description names part of perimeter security integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name perimeter security integrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 569 perimeter security integrators based in the United Kingdom

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Perimeter security integrators based in the United Kingdom at a glance

As of Sep 29, 2026

41.7%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

12.1%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

292

11-50

191

51-200

201-500

501-1,000

1,001-5,000

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 569 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 perimeter security integrators, 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 “perimeter security integrators”. 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 perimeter security integrators), 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 perimeter security integrators, 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, 2,488 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.

Perimeter security integrators by metro

Perimeter security integrators in London69

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 perimeter security integrators, 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 perimeter security integrators are there based in the United Kingdom?

RevenueBase identified 569 perimeter security integrators 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?

Trinity Fire & Security Systems, headquartered in Exeter, tops this list with the largest team on record.

Which city has the most perimeter security integrators?

London leads with 69 headquartered companies, followed by Manchester (13) and Leeds (12).

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 2,488 verified decision-maker contacts tracked across these 569 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.