Company lists · Data refreshed October 2026

Top 25 Fire alarm system contractors based in the United Kingdom

Name: Fire alarm system contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 1,150 companies tracked

RevenueBase identified 1,150 company matches for fire alarm system contractors associated with the United Kingdom as of October 2026 and tracks 15,616 professional contacts across them, including 6,307 with verified work emails. London is the largest hub.

This list covers company matches for fire alarm system contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 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 RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

1,150Companies

15,616Contacts tracked

6,307Verified emails

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The 25 largest fire alarm system contractors based in the United Kingdom

Ranked by team size

Top 25 of 1,150 company matches for fire alarm system contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Chubb Fire & Security	Exact match	Staines, United KingdomHQ recorded Oct 12, 2026	10001+	6,400 contacts →
	Exact match “Making the world a safer place.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Trinity Fire & Security Systems	Exact match	Exeter, United KingdomHQ recorded Oct 12, 2026	501-1,000	363 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Churches Fire & Security	Exact match	Chandlers Ford, United KingdomHQ recorded Oct 12, 2026	201-500	340 contacts →
	Exact match “Established in 1992, Churches Fire & Security is a nationwide company dedicated to supplying customers with the best fire safety and security services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Marlowe Fire & Security	Exact match	Manchester, United KingdomHQ recorded Oct 12, 2026	501-1,000	305 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Senseco Systems Limited	Exact match	Gillingham, United KingdomHQ recorded Oct 12, 2026	201-500	130 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Global Fire & Security Systems	Exact match	Nottingham, United KingdomHQ recorded Oct 12, 2026	51-200	126 contacts →
	Exact match “Global Fire and Security Systems are market leaders in providing quality product solutions to services through the Fire and Security market place nationwide.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Argus Fire Protection Co. Limited	Exact match	Stourbridge, United KingdomHQ recorded Oct 12, 2026	51-200	94 contacts →
	Exact match “Argus fire is: •The UK’s class-leading supplier of fire detection and fire protection systems •One of the largest privately owned fire protection businesses in the UK •Trusted to…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Scutum UK	Exact match	Chertsey, United KingdomHQ recorded Oct 12, 2026	201-500	86 contacts →
	Exact match “Scutum Fire & Security Ltd.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	A&f Sprinklers LTD	Exact match	Gorrels Way, United KingdomHQ recorded Oct 12, 2026	51-200	85 contacts →
	Exact match “Market Leading Level 4 - LPC / LPS 1048 designers & installers of Automatic Fire protection Systems.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Ea-Rs Fire Engineering LTD	Exact match	Witham, United KingdomHQ recorded Oct 12, 2026	51-200	82 contacts →
	Exact match “Incorporated in 1996, EA-RS Fire Engineering are the UK’s trusted provider of intelligent and sustainable compliant Fire Safety Systems and Services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Mcintyre Compliance Services	Exact match	Peterborough, United KingdomHQ recorded Oct 12, 2026	201-500	82 contacts →
	Exact match “McIntyre Compliance Services is a NICEIC, SSAIB, BAFE, BMTRADA approved contractor, carrying out all aspects of electrical works, fire, security and passive fire compliance works…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Walker Fire And Security UK	Exact match	Preston, United KingdomHQ recorded Oct 12, 2026	201-500	78 contacts →
	Exact match “We simplify compliance and secure your business, with one trusted partner.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	DFP Services	Exact match	Durham, United KingdomHQ recorded Oct 12, 2026	51-200	65 contacts →
	Exact match “DFP Services are a leading provider of Fire, Security, Communications, Mechanical and Electrical services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Ventro	Exact match	Plymouth, United KingdomHQ recorded Oct 12, 2026	51-200	59 contacts →
	Exact match “Ventro is one of the leading specialists for Fire Safety in the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Allsaved LTD	Exact match	Pulborough, United KingdomHQ recorded Oct 12, 2026	51-200	59 contacts →
	Exact match “Welcome to Allsaved.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	PFS Group	Exact match	Southend-on-sea, United KingdomHQ recorded Oct 12, 2026	51-200	59 contacts →
	Exact match “PFS Group Limited is an independently owned Fire & Security company that has been established since 1998.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Thameside Fire Protection	Exact match	Basildon, United KingdomHQ recorded Oct 12, 2026	51-200	58 contacts →
	Exact match “Thameside Fire Protection, having operated successfully since 1985, is one of the largest independent fire protection companies in the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Logic Fire And Security	Exact match	Knaresborough, United KingdomHQ recorded Oct 12, 2026	11-50	56 contacts →
	Exact match “At Logic Fire and Security we design, supply, install, commission and maintain fire detection systems and electronic security systems throughout the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Sensetech Systems LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	51-200	53 contacts →
	Exact match “Sensetech Systems Ltd is an LPS1014 Accredited independent Fire Alarm, Security and Structured Data Cabling Company.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	TP Fire & Security LTD	Exact match	East Harling, United KingdomHQ recorded Oct 12, 2026	51-200	53 contacts →
	Exact match “Total Protection by Trusted Fire & Security Professionals With London, Midlands and Eastern branches, we deliver 24/7 fire and security services across the UK.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Complete Detection Systems	Exact match	Leicester, United KingdomHQ recorded Oct 12, 2026	51-200	50 contacts →
	Exact match “part of the Obsequio Group At CDS, we design, establish, maintain, and enhance fire detection and life safety systems, ensuring that the environments where people live, learn, and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	ACE Fire And Security	Exact match	Bedford, United KingdomHQ recorded Oct 12, 2026	51-200	48 contacts →
	Exact match “Established in 1990, Ace Fire & Security is an end-to-end security, occupant safety, systems integration, monitoring and fire solutions specialist for commercial, industrial site…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Jackson Fire & Security UK LTD	Exact match	Mold, United KingdomHQ recorded Oct 12, 2026	51-200	47 contacts →
	Exact match “We protect your people and property 24/7.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Connelly Security Systems LTD CSS LTD	Exact match	Glasgow, United KingdomHQ recorded Oct 12, 2026	51-200	46 contacts →
	Exact match “CSS is Scotland’s leading supplier and installer of domestic and commercial intruder and fire alarm systems.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Knight Security & Fire Limited	Exact match	Byfleet, United KingdomHQ recorded Oct 12, 2026	n/a	44 contacts →
	Exact match “We are specialist providers of professional security system solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “fire alarm system contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,150 fire alarm system contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 6,307 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fire alarm system contractors based in the United Kingdom at a glance

As of Oct 12, 2026

40.4%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

7.8%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

628

11-50

414

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 1,150 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United Kingdom whose business descriptions match “fire alarm system contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 6,307 professional contacts with verified work emails across the full matched dataset. 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 October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Fire alarm system contractors by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fire alarm system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fire alarm system contractors are there based in the United Kingdom?

RevenueBase identified 1,150 company matches for fire alarm system contractors associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Chubb Fire & Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most fire alarm system contractors?

London leads with 90 company records, followed by Manchester (25) and Glasgow (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,307 professional contacts with verified work emails tracked across these 1,150 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 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.