Company lists · Data refreshed September 2026

Top 25 Smart city security companies based in the United Kingdom

RevenueBase identified 722 company matches for smart city security companies associated with the United Kingdom as of September 2026 and tracks 99,878 professional contacts across them, including 5,876 with verified work emails. London is the largest hub.

This list covers company matches for smart city security companies 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 September 29, 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 Sep 29, 2026 How this list was built
722Companies
99,878Contacts tracked
5,876Verified emails
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The 25 largest smart city security companies based in the United Kingdom

Ranked by team size
Top 25 of 722 company matches for smart city security companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchLondon, United KingdomHQ recorded Sep 29, 202610001+79,699 contacts →

Exact match

“G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchStaines, United KingdomHQ recorded Sep 29, 202610001+6,169 contacts →

Exact match

“Making the world a safer place.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchNorthampton, United KingdomHQ recorded Sep 29, 202610001+1,508 contacts →

Exact match

“We are an intelligence-led security business.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchCirencester, United KingdomHQ recorded Sep 29, 20261,001-5,000422 contacts →

Exact match

“Unlike traditional security providers, we're redefining what protection means in today's world.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchBlackburn, United KingdomHQ recorded Sep 29, 2026n/a393 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 · Sep 29, 2026 · View company records in RevenueBase
6Exact matchBradford, United KingdomHQ recorded Sep 29, 2026501-1,000326 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchRomford, United KingdomHQ recorded Sep 29, 2026201-500200 contacts →

Exact match

“OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200187 contacts →

Exact match

“Headquartered in London U.K, Gorilla is a global solution provider in Security Intelligence, Network Intelligence, Business Intelligence and IoT technology.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchSheffield, United KingdomHQ recorded Sep 29, 2026201-500175 contacts →

Exact match

“We specialise in developing technology-led solutions to specific markets globally – including critical infrastructure, energy, public space, transport, and leisure and hospitality.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchTelford, United KingdomHQ recorded Sep 29, 202651-200170 contacts →

Exact match

“DeterTech is an industry leading provider of highly innovative and intelligence-led end-to-end security solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchHaslingden, United KingdomHQ recorded Sep 29, 2026201-500170 contacts →

Exact match

“Looking after the things people care about, wherever they are’.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchSidcup, United KingdomHQ recorded Sep 29, 2026201-500166 contacts →

Exact match

“Trigion Security Services is the UK provider of Security Guarding and Technical Solutions for Facilicom UK.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200159 contacts →

Exact match

“QCIC is an award-winning global engineering firm specialising in designing, building and running security systems.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchBracknell, United KingdomHQ recorded Sep 29, 202651-200157 contacts →

Exact match

“Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchLeeds, United KingdomHQ recorded Sep 29, 202651-200157 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 · Sep 29, 2026 · View company records in RevenueBase
16Exact matchChalfont St Peter, United KingdomHQ recorded Sep 29, 202651-200145 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 · Sep 29, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200137 contacts →

Exact match

“The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchWest Midlands, United KingdomHQ recorded Sep 29, 2026201-500124 contacts →

Exact match

“Having a 34 year old presence in the security & surveillance industry, Vantage has seen the industry being conceived and mature over time and have been at the forefront of every…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchWatford, United KingdomHQ recorded Sep 29, 202651-200116 contacts →

Exact match

“TSP has a reputation for providing enterprise security solutions, as well as excellent system integration standards and exceptional aftercare support, since its founding in 1988.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchWhiteley, United KingdomHQ recorded Sep 29, 2026501-1,00087 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 · Sep 29, 2026 · View company records in RevenueBase
21Exact matchCamberley, United KingdomHQ recorded Sep 29, 202651-20079 contacts →

Exact match

“Control Center is trusted by the best-informed security operations around the world to provide proactive physical security management for mission-critical command and control.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchReading, United KingdomHQ recorded Sep 29, 202651-20077 contacts →

Exact match

“At OSL, our mission is to deliver adaptive security solutions that protect high-value, risk-prone areas by integrating innovative technologies designed to manage both aerial and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchCastle Donington, United KingdomHQ recorded Sep 29, 202651-20071 contacts →

Exact match

“CAME is a leading multinational company, providing integrated technology solutions for automating residential, public and urban environments that creates smart spaces to improve…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchMatfen, United KingdomHQ recorded Sep 29, 202651-20071 contacts →

Exact match

“RHI Industrials provide Physical and Electronic Security Solutions to the UK's major utility companies and partners: Critical National Infrastructure Facilities, Electricity…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchNorthampton, United KingdomHQ recorded Sep 29, 202651-20069 contacts →

Exact match

“BauWatch secures your site and assets with rapidly deployed mobile video surveillance systems.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 722 smart city security companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 5,876 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Smart city security companies based in the United Kingdom at a glance

As of Sep 29, 2026
5.9%Verified-email coverage
138.3Average contacts per company
11-50Median size (employees)
16.5%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
326
11-50
236
51-200
107
201-500
29
501-1,000
8
1,001-5,000
4
5,001-10,000
1
10001+
4

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 722 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 “smart city security companies” 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 5,876 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 September 29, 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.

Smart city security companies 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 “smart city security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many smart city security companies are there based in the United Kingdom?

RevenueBase identified 722 company matches for smart city security companies associated with the United Kingdom as of September 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?

G4s tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most smart city security companies?

London leads with 119 company records, followed by Manchester (18) and Birmingham (9).

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 5,876 professional contacts with verified work emails tracked across these 722 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 September 29, 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.