Company lists · Data refreshed October 2026

Top 25 Surveillance and electronic security system equipment maintenance services based in the United Kingdom

RevenueBase identified 1,212 company matches for surveillance and electronic security system equipment maintenance services associated with the United Kingdom as of October 2026 and tracks 7,084 professional contacts across them, including 1,936 with verified work emails. London is the largest hub.

This list covers company matches for surveillance and electronic security system equipment maintenance services 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 19, 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 19, 2026 How this list was built
1,212Companies
7,084Contacts tracked
1,936Verified emails
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The 25 largest surveillance and electronic security system equipment maintenance services based in the United Kingdom

Ranked by team size
Top 25 of 1,212 company matches for surveillance and electronic security system equipment maintenance services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 matchBlackburn, United KingdomHQ recorded Oct 19, 2026n/a417 contacts →

Exact match

“At Global Security Ltd, we are proud to be one of the UK’s trusted suppliers of CCTV, intruder alarms, access control, and fire safety systems.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchBradford, United KingdomHQ recorded Oct 19, 2026501-1,000347 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchLeeds, United KingdomHQ recorded Oct 19, 202651-200173 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 · Oct 19, 2026 · View company records in RevenueBase
4Exact matchLeicester, United KingdomHQ recorded Oct 19, 202651-20070 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 · Oct 19, 2026 · View company records in RevenueBase
5Exact matchTrowbridge, United KingdomHQ recorded Oct 19, 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 · Oct 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Oct 19, 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 · Oct 19, 2026 · View company records in RevenueBase
7Exact matchGateshead, United KingdomHQ recorded Oct 19, 2026201-50054 contacts →

Exact match

“The Protector Group are a multi disciplined security company specializing in Manned Guarding, CCTV installation, maintenance and monitoring, Intruder and Fire alarm installation…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchSouth Normanton, United KingdomHQ recorded Oct 19, 2026201-50052 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchBedford, United KingdomHQ recorded Oct 19, 202651-20048 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 19, 2026 · View company records in RevenueBase
10Exact matchOxford, United KingdomHQ recorded Oct 19, 202651-20047 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 · Oct 19, 2026 · View company records in RevenueBase
11Exact matchBradford, United KingdomHQ recorded Oct 19, 202611-5047 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchGlasgow, United KingdomHQ recorded Oct 19, 202651-20046 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 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Oct 19, 2026501-1,00046 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 · Oct 19, 2026 · View company records in RevenueBase
14Exact matchByfleet, United KingdomHQ recorded Oct 19, 2026n/a44 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchWolverhampton, United KingdomHQ recorded Oct 19, 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 · Oct 19, 2026 · View company records in RevenueBase
16Exact matchCanterbury, United KingdomHQ recorded Oct 19, 2026201-50042 contacts →

Exact match

“AKON SECURITY SERVICES LTD – Professional Security & Facilities in Kent Trusted by the Community.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchNottingham, United KingdomHQ recorded Oct 19, 202651-20041 contacts →

Exact match

“Founded in 2001, Tecserv UK is a highly successful fire protection, alarm and CCTV installation and maintenance company.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchDodworth, United KingdomHQ recorded Oct 19, 202651-20040 contacts →

Exact match

“Doyle Security Ltd is a leading provider of professional security solutions, proudly safeguarding businesses, homeowners, and their properties for over four decades.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchChelmsford, United KingdomHQ recorded Oct 19, 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 · Oct 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Oct 19, 202651-20039 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 · Oct 19, 2026 · View company records in RevenueBase
21Exact matchStock, United KingdomHQ recorded Oct 19, 202611-5036 contacts →

Exact match

“Tired of poor service?”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchLincoln, United KingdomHQ recorded Oct 19, 202611-5035 contacts →

Exact match

“Founded in 1974, Lincoln Security Ltd.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchBicester, United KingdomHQ recorded Oct 19, 2026n/a34 contacts →

Exact match

“SECURITY EXPERTS FOR SCHOOLS, BUSINESS AND HOMES.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchStevenage, United KingdomHQ recorded Oct 19, 202611-5032 contacts →

Exact match

“When your CCTV system is business-critical, Link CCTV is the technology partner your business needs.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchBromsgrove, United KingdomHQ recorded Oct 19, 202611-5032 contacts →

Exact match

“Zicam specialise in state-of-the-art security disciplines covering remotely monitored CCTV, Access Control, Fire Alarms, Permitter Protection and Intruder Alarm Systems.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 1,212 surveillance and electronic security system equipment maintenance services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,936 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Surveillance and electronic security system equipment maintenance services based in the United Kingdom at a glance

As of Oct 19, 2026
27.3%Verified-email coverage
5.8Average contacts per company
1-10Median size (employees)
9.7%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
758
11-50
360
51-200
64
201-500
9
501-1,000
2
1,001-5,000
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 1,212 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 “surveillance and electronic security system equipment maintenance services” 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 1,936 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 19, 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 “surveillance and electronic security system equipment maintenance services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many surveillance and electronic security system equipment maintenance services are there based in the United Kingdom?

RevenueBase identified 1,212 company matches for surveillance and electronic security system equipment maintenance services 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?

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

Which city has the most surveillance and electronic security system equipment maintenance services?

London leads with 117 company records, followed by Manchester (31) and Glasgow (16).

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 1,936 professional contacts with verified work emails tracked across these 1,212 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,212 surveillance and electronic security system equipment maintenance services based in the United Kingdom. Start with a free account, no credit card.

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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.