Company lists · Data refreshed November 2026

Top 25 Threat detection system installers based in the United Kingdom

RevenueBase identified 379 company matches for threat detection system installers associated with the United Kingdom as of November 2026 and tracks 3,114 professional contacts across them, including 1,094 with verified work emails. London is the largest hub.

This list covers company matches for threat detection 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
379Companies
3,114Contacts tracked
1,094Verified emails
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The 25 largest threat detection system installers based in the United Kingdom

Ranked by team size
Top 25 of 379 company matches for threat detection 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 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
2Exact matchWhiteley, United KingdomHQ recorded Nov 6, 2026501-1,00090 contacts →

Exact match

“Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,00050 contacts →

Exact match

“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact 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
6Exact 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
7Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Universal Security Systems Limited is a specialist provider of installation and maintenance services for all types of security systems including Access Control, Closed Circuit…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“Gratte Brothers is an experienced provider of integrated security solutions, which are Built on Strong Values and ultimately deliver a measurable return on investment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchChelmsford, United KingdomHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBicester, United KingdomHQ recorded Nov 6, 2026n/a36 contacts →

Exact match

“SECURITY EXPERTS FOR SCHOOLS, BUSINESS AND HOMES.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDarwen, United KingdomHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“Many security companies pull together different providers to deliver a single service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMansfield, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Engineered Protection & Optimisation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMexborough, United KingdomHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“At WRS Solutions, we specialise in delivering tailored electronic security systems that provide real peace of mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPortishead, United KingdomHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“part of the Obsequio Group At Brunel, we provide advanced security and life protection solutions, ensuring that your business and assets are safeguarded with the highest standards…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRotherham, United KingdomHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Reflex Systems is a leading UK owned security and fire systems specialist, established in 1987 and based in South Yorkshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCrawley, United KingdomHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“Classic Security was founded in 1947 by Fredrick Townsley - the father of our chairman and the grandfather of our MD.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNorthampton, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Bee Tee Alarms Ltd is a well established family owned business evolving from Dove Security, established in 1980 and taking its present identity in 1984.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKingsclere, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Safeguard Systems designs and installs commercial security systems to detect, deter, and manage a range of threats.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“SGS Systems has been supplying, installing & maintaining security systems for homes & businesses in Wolverhampton, Birmingham, Staffordshire, Shropshire & the Midlands for 30…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBlackburn, United KingdomHQ recorded Nov 6, 20261,001-5,00016 contacts →

Exact match

“At Chubb, we help you drive what matters most through planning, designing and installing fire-safety systems and security solutions that make your buildings safer, healthier and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchChelmsford, United KingdomHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“BGE Digital is a forward thinking, innovative company offering high quality security system design, installation and commissioning services for large and small commercial and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCrawley, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“ISM is a Solutions Business with more than 30 years world leading experience in the manufacturing and inventing of integrated security management solutions, encompassing alarm…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“At ASM, effective security is about more than great technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMaidstone, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Secure Engineering are quality installers of business and industrial electronic security systems, site lighting and CCTV cameras in London and the South East of England.”

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

Showing 25 of 379 threat detection system installers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,094 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Threat detection system installers based in the United Kingdom at a glance

As of Nov 6, 2026
35.1%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
12.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
226
11-50
110
51-200
23
201-500
2
501-1,000
3
1,001-5,000
2

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 379 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 “threat detection 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 1,094 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.

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

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

RevenueBase identified 379 company matches for threat detection 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?

Kings Secure Technologies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most threat detection system installers?

London leads with 47 company records, followed by Manchester (13) and Bristol (6).

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 1,094 professional contacts with verified work emails tracked across these 379 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.