Company lists · Data refreshed November 2026

Top 25 Alarm system installers based in the United Kingdom

RevenueBase identified 1,782 company matches for alarm system installers associated with the United Kingdom as of November 2026 and tracks 17,820 professional contacts across them, including 6,257 with verified work emails. London is the largest hub.

This list covers company matches for alarm system installers 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 November 6, 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 Nov 6, 2026 How this list was built
1,782Companies
17,820Contacts tracked
6,257Verified emails
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The 25 largest alarm system installers based in the United Kingdom

Ranked by team size
Top 25 of 1,782 company matches for alarm system installers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchStaines, United KingdomHQ recorded Nov 6, 202610001+6,705 contacts →

Exact match

“Making the world a safer place.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBradford, United KingdomHQ recorded Nov 6, 2026501-1,000352 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Nov 6, 2026501-1,000307 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLeeds, United KingdomHQ recorded Nov 6, 202651-200184 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchChalfont St Peter, United KingdomHQ recorded Nov 6, 202651-200149 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchOrpington, United KingdomHQ recorded Nov 6, 2026201-50086 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLeicester, United KingdomHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTrowbridge, United KingdomHQ recorded Nov 6, 202651-20060 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20059 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKnaresborough, United KingdomHQ recorded Nov 6, 202611-5057 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSouth Normanton, United KingdomHQ recorded Nov 6, 2026201-50054 contacts →

Exact match

“Secur-it is a leading provider of security services and risk management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLeicester, United KingdomHQ recorded Nov 6, 202611-5054 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20053 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBedford, United KingdomHQ recorded Nov 6, 202651-20051 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202651-20049 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchOxford, United KingdomHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Since 1993, The Chris Lewis Group has been the trusted fire, security and smart technology partner for homeowners and businesses across Oxfordshire, Berkshire, Buckinghamshire…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“The Thompson Group offer specialist design, installation, service and maintenance of integrated security, fire, communications, audio visual and life safety systems for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBradford, United KingdomHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“OmegaSecurity1 | Omega specialise in innovative security solutions which you can count on.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“We're here to help you sufficiently protect your valued goods - whether its safeguarding items in your home or putting a security strategy in place for your business, we've got…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSt Albans, United KingdomHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“We are Amthal Group Companies, one of the nation’s trusted commercial life safety and security technology partners for UK businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchByfleet, United KingdomHQ recorded Nov 6, 2026n/a45 contacts →

Exact match

“We are specialist providers of professional security system solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“Being safe should be simple.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSwindon, United KingdomHQ recorded Nov 6, 2026n/a42 contacts →

Exact match

“Interface Security System Limited specialise in the supply and installation of Intruder Alarms, Access Control Systems, CCTV and Automatic Doors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHilldale, United KingdomHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“We are one of the UK’s leading specialist electrical contracting companies with over 35 years' experience in the design, supply, installation, commissioning and maintenance of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,782 alarm system installers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 6,257 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Alarm system installers based in the United Kingdom at a glance

As of Nov 6, 2026
35.1%Verified-email coverage
10.0Average contacts per company
1-10Median size (employees)
8.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,078
11-50
507
51-200
88
201-500
8
501-1,000
3
1,001-5,000
1
10001+
1

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 1,782 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 “alarm system installers” 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 6,257 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 November 6, 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.

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 “alarm system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,782 company matches for alarm system installers associated with the United Kingdom as of November 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 alarm system installers?

London leads with 150 company records, followed by Manchester (38) and Glasgow (24).

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 6,257 professional contacts with verified work emails tracked across these 1,782 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 November 6, 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.