Company lists · Data refreshed September 2026

Top 25 Alarm system manufacturers based in the United Kingdom

Name: Alarm system manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 925 companies tracked

RevenueBase identified 925 alarm system manufacturers headquartered in the United Kingdom as of September 2026 and tracks 12,026 professional contacts across them, including 4,441 with verified work emails. London is the largest hub.

This list covers alarm system manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

925Companies

12,026Contacts tracked

4,441Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest alarm system manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 925 alarm system manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to alarm system manufacturers: 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	Chubb Fire & Security	Indirect evidence	Staines, United KingdomHQ checked Sep 30, 2026	10001+	6,169 contacts →
	Indirect evidence “Making the world a safer place.” Source: RevenueBase Database · checked Sep 30, 2026
2	Marlowe Fire & Security	Indirect evidence	Manchester, United KingdomHQ checked Sep 30, 2026	501-1,000	389 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 30, 2026
3	Global Fire & Security Systems	Partial evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	51-200	119 contacts →
	Partial evidence “Global Fire and Security Systems are market leaders in providing quality product solutions to services through the Fire and Security market place nationwide.” Source: RevenueBase Database · checked Sep 30, 2026
4	Senseco Systems Limited	Partial evidence	Gillingham, United KingdomHQ checked Sep 30, 2026	201-500	107 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 30, 2026
5	Scutum UK	Indirect evidence	Chertsey, United KingdomHQ checked Sep 30, 2026	201-500	87 contacts →
	Indirect evidence “Scutum Fire & Security Ltd.” Source: RevenueBase Database · checked Sep 30, 2026
6	ABEL	Partial evidence	Leicester, United KingdomHQ checked Sep 30, 2026	51-200	70 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 30, 2026
7	Alertsystems LTD	Partial evidence	Trowbridge, United KingdomHQ checked Sep 30, 2026	51-200	61 contacts →
	Partial evidence “AlertSystems specialise in the design, installation, service, and maintenance of commercial electronic security and fire safety systems.” Source: RevenueBase Database · checked Sep 30, 2026
8	Logic Fire And Security	Partial evidence	Knaresborough, United KingdomHQ checked Sep 30, 2026	11-50	55 contacts →
	Partial evidence “At Logic Fire and Security we design, supply, install, commission and maintain fire detection systems and electronic security systems throughout the UK.” Source: RevenueBase Database · checked Sep 30, 2026
9	Connelly Security Systems LTD CSS LTD	Strong evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	51-200	49 contacts →
	Strong evidence “CSS is Scotland’s leading supplier and installer of domestic and commercial intruder and fire alarm systems.” Source: RevenueBase Database · checked Sep 30, 2026
10	Absolute Fire & Security Systems Limited	Indirect evidence	Godalming, United KingdomHQ checked Sep 30, 2026	11-50	40 contacts →
	Indirect evidence “We are passionate about protecting the things that are important to our customers - their people or family, their properties, their possessions/contents and equipment.” Source: RevenueBase Database · checked Sep 30, 2026
11	Simplisafe UK	Indirect evidence	Manchester, United KingdomHQ checked Sep 30, 2026	11-50	36 contacts →
	Indirect evidence “Being safe should be simple.” Source: RevenueBase Database · checked Sep 30, 2026
12	Rosse Systems	Partial evidence	Shipley, United KingdomHQ checked Sep 30, 2026	11-50	36 contacts →
	Partial evidence “Rosse Systems specialises in Active Fire and Security Systems.” Source: RevenueBase Database · checked Sep 30, 2026
13	Orisec LTD	Strong evidence	Haslingden, United KingdomHQ checked Sep 30, 2026	11-50	34 contacts →
	Strong evidence “Intruder alarm products designed & manufactured in the United Kingdom for the professional installer.” Source: RevenueBase Database · checked Sep 30, 2026
14	Ceaton Security Services Limited	Partial evidence	Cardiff, United KingdomHQ checked Sep 30, 2026	51-200	31 contacts →
	Partial evidence “Ceaton Security Services Ltd is based in South Wales, specialising in the design, installation, service & maintenance of Automation, Fire, Fire Door & Security Systems - not…” Source: RevenueBase Database · checked Sep 30, 2026
15	Alert Alarms Family-Run Security Specialists Protecting Homes & Businesses Since 1982	Indirect evidence	Redditch, United KingdomHQ checked Sep 30, 2026	1-10	28 contacts →
	Indirect evidence “Protecting homes and businesses since 1982.” Source: RevenueBase Database · checked Sep 30, 2026
16	Unique Fire And Security LTD	Indirect evidence	Poole, United KingdomHQ checked Sep 30, 2026	11-50	28 contacts →
	Indirect evidence “Based on the south coast, with coverage across Dorset, Hampshire and surrounding areas, Unique Fire & Security has many years of experience in the fire protection and property…” Source: RevenueBase Database · checked Sep 30, 2026
17	KBO Fire & Security	Indirect evidence	Camberley, United KingdomHQ checked Sep 30, 2026	51-200	27 contacts →
	Indirect evidence “For over 30 years, we’ve been making life more secure for home owners and businesses across London, Surrey, Hampshire and the surrounding counties.” Source: RevenueBase Database · checked Sep 30, 2026
18	Pyrocel Fire And Security Limited	Strong evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 30, 2026	51-200	27 contacts →
	Strong evidence “Pyrocel Ltd provides the following state of the art electronic products and services: • Fire Detection & Alarm Systems • Security Systems (Intruder, CCTV & Access) • Assistive…” Source: RevenueBase Database · checked Sep 30, 2026
19	Gbsg LTD	Indirect evidence	Spalding, United KingdomHQ checked Sep 30, 2026	51-200	26 contacts →
	Indirect evidence “For over 40 years, GBSG Ltd has been a trusted leader in commercial security and fire protection, delivering complete, end-to-end solutions that safeguard people, property, and…” Source: RevenueBase Database · checked Sep 30, 2026
20	Building Protection Systems	Indirect evidence	Belfast, United KingdomHQ checked Sep 30, 2026	11-50	25 contacts →
	Indirect evidence “We provide both New Build Solutions and Maintenance Contracts for companies throughout the UK & Ireland.” Source: RevenueBase Database · checked Sep 30, 2026
21	Safety Technology International LTD	Indirect evidence	Bromsgrove, United KingdomHQ checked Sep 30, 2026	11-50	25 contacts →
	Indirect evidence “Over 40 years of protecting the things that protects you!” Source: RevenueBase Database · checked Sep 30, 2026
22	WRS Solutions	Partial evidence	Mexborough, United KingdomHQ checked Sep 30, 2026	11-50	25 contacts →
	Partial evidence “At WRS Solutions, we specialise in delivering tailored electronic security systems that provide real peace of mind.” Source: RevenueBase Database · checked Sep 30, 2026
23	Link Integrated Security Solutions Limited	Indirect evidence	Mansfield, United KingdomHQ checked Sep 30, 2026	11-50	25 contacts →
	Indirect evidence “Security and Investigations company” Source: RevenueBase Database · checked Sep 30, 2026
24	APS Security & Fire	Indirect evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	11-50	24 contacts →
	Indirect evidence “part of the Obsequio Group APS Security & Fire is an NSI Gold approved company with over 20 years of experience in the fire and security industry.” Source: RevenueBase Database · checked Sep 30, 2026
25	Realm Fire & Security LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	11-50	23 contacts →
	Indirect evidence “Realm Fire and Security Ltd is an independent company operating locally in Aberdeen and the surrounding area.” Source: RevenueBase Database · checked Sep 30, 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: alarm system manufacturers. 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 alarm system manufacturers.
Partial evidence: Its own public description names part of alarm system manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alarm system manufacturers. 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 925 alarm system manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,441 reachable decision-makers.

Free signup · no credit card

View the full list →

Alarm system manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

36.9%Verified-email coverage

13.0Average contacts per company

1-10Median size (employees)

8.9%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

547

11-50

307

51-200

201-500

501-1,000

1,001-5,000

10001+

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 925 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 alarm system manufacturers, 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 “alarm system manufacturers”. 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 alarm system manufacturers), 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 alarm system manufacturers, 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, 4,441 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 30, 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.

Alarm system manufacturers by metro

Alarm system manufacturers in London82

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 alarm system manufacturers, 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 alarm system manufacturers are there based in the United Kingdom?

RevenueBase identified 925 alarm system manufacturers 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 alarm system manufacturers?

London leads with 82 headquartered companies, followed by Manchester (19) and Leicester (15).

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 4,441 verified decision-maker contacts tracked across these 925 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 925 alarm system manufacturers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Alarm system manufacturers by geography

Browse the directory

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.