Company lists · Data refreshed September 2026

Top 25 Enterprise security system providers based in the United Kingdom

Name: Enterprise security system providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,986 companies tracked

RevenueBase identified 1,986 enterprise security system providers headquartered in the United Kingdom as of September 2026 and tracks 26,987 professional contacts across them, including 8,667 with verified work emails. London is the largest hub.

This list covers enterprise security system providers headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

1,986Companies

26,987Contacts tracked

8,667Verified emails

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The 25 largest enterprise security system providers based in the United Kingdom

Ranked by team size

Top 25 of 1,986 enterprise security system providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise security system providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Chubb Fire & Security	Indirect evidence	Staines, United KingdomHQ checked Sep 28, 2026	10001+	6,169 contacts →
	Indirect evidence “Making the world a safer place.” Source: RevenueBase Database · checked Sep 28, 2026
2	Global Security	Strong evidence	Blackburn, United KingdomHQ checked Sep 28, 2026	n/a	393 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
3	Marlowe Fire & Security	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	501-1,000	389 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
4	Trinity Fire & Security Systems	Indirect evidence	Exeter, United KingdomHQ checked Sep 28, 2026	501-1,000	386 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
5	Hanwha Vision Europe	Partial evidence	Chertsey, United KingdomHQ checked Sep 28, 2026	201-500	333 contacts →
	Partial evidence “Hanwha Vision Europe offers robust and reliable video surveillance products and solutions that are designed to meet the current and future needs of security professionals.” Source: RevenueBase Database · checked Sep 28, 2026
6	Kings Secure Technologies	Strong evidence	Bradford, United KingdomHQ checked Sep 28, 2026	501-1,000	326 contacts →
	Strong evidence “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: RevenueBase Database · checked Sep 28, 2026
7	Paxton Access LTD	Indirect evidence	Brighton, United KingdomHQ checked Sep 28, 2026	201-500	255 contacts →
	Indirect evidence “With 40 years of experience, Paxton is a company passionate about technology.” Source: RevenueBase Database · checked Sep 28, 2026
8	Evolution Electronic Security Systems LTD	Strong evidence	Marlow, United KingdomHQ checked Sep 28, 2026	201-500	200 contacts →
	Strong evidence “Founded in 1996 we have grown into one of the UK and Ireland’s leading qualified and accredited security and fire systems integrators, working across Europe to bring together…” Source: RevenueBase Database · checked Sep 28, 2026
9	Openview Security Solutions Limited	Partial evidence	Romford, United KingdomHQ checked Sep 28, 2026	201-500	200 contacts →
	Partial evidence “OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…” Source: RevenueBase Database · checked Sep 28, 2026
10	Texecom LTD	Indirect evidence	Haslingden, United KingdomHQ checked Sep 28, 2026	201-500	170 contacts →
	Indirect evidence “Looking after the things people care about, wherever they are’.” Source: RevenueBase Database · checked Sep 28, 2026
11	QCIC	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	159 contacts →
	Strong evidence “QCIC is an award-winning global engineering firm specialising in designing, building and running security systems.” Source: RevenueBase Database · checked Sep 28, 2026
12	Norbain SD	Partial evidence	Bracknell, United KingdomHQ checked Sep 28, 2026	51-200	157 contacts →
	Partial evidence “Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.” Source: RevenueBase Database · checked Sep 28, 2026
13	Gough & Kelly	Partial evidence	Leeds, United KingdomHQ checked Sep 28, 2026	51-200	157 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
14	Pointer LTD	Partial evidence	Glasgow, United KingdomHQ checked Sep 28, 2026	51-200	153 contacts →
	Partial evidence “Pointer Limited We are a Specialist Fire and Security Services Integrator.” Source: RevenueBase Database · checked Sep 28, 2026
15	Frontline Security Solutions	Strong evidence	Chalfont St Peter, United KingdomHQ checked Sep 28, 2026	51-200	145 contacts →
	Strong evidence “Frontline Security Solutions is a global electronic security integrator specialising in Access Control, CCTV, Intruder and Intercom systems that protect people, property and…” Source: RevenueBase Database · checked Sep 28, 2026
16	The Keyholding Company	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	137 contacts →
	Partial evidence “The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Source: RevenueBase Database · checked Sep 28, 2026
17	Vantage Security	Partial evidence	West Midlands, United KingdomHQ checked Sep 28, 2026	201-500	124 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
18	Global Fire & Security Systems	Strong evidence	Nottingham, United KingdomHQ checked Sep 28, 2026	51-200	119 contacts →
	Strong evidence “Global Fire and Security Systems are market leaders in providing quality product solutions to services through the Fire and Security market place nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
19	European Electronique	Strong evidence	Eynsham, United KingdomHQ checked Sep 28, 2026	51-200	117 contacts →
	Strong evidence “European Electronique is a leading UK systems Integrator, specialising in the delivery of secure technology platforms including Hybrid IT, Cyber Security and Networking…” Source: RevenueBase Database · checked Sep 28, 2026
20	Total Security Protection LTD	Strong evidence	Watford, United KingdomHQ checked Sep 28, 2026	51-200	116 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
21	Biosite Systems LTD	Indirect evidence	Solihull, United KingdomHQ checked Sep 28, 2026	51-200	111 contacts →
	Indirect evidence “Biosite is a market leader and innovator in biometric access control and workforce management software solutions for the construction industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Senseco Systems Limited	Strong evidence	Gillingham, United KingdomHQ checked Sep 28, 2026	201-500	107 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
23	Videcon	Partial evidence	West Yorkshire, United KingdomHQ checked Sep 28, 2026	51-200	101 contacts →
	Partial evidence “Videcon is a leading trade-only distributor of CCTV, Fire, Intruder & Access Control products to the UK security market.” Source: RevenueBase Database · checked Sep 28, 2026
24	Sep2	Partial evidence	Leeds, United KingdomHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “SEP2 is an award-winning UK-based cyber security specialist service provider, powered by a dedicated team of experts available 24/7/365.” Source: RevenueBase Database · checked Sep 28, 2026
25	Croma Security Solutions Group PLC Cssg	Partial evidence	Whiteley, United KingdomHQ checked Sep 28, 2026	501-1,000	87 contacts →
	Partial evidence “Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise security system providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names enterprise security system providers.
Partial evidence: Its own public description names part of enterprise security system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise security system providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,986 enterprise security system providers based in the United Kingdom

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Enterprise security system providers based in the United Kingdom at a glance

As of Sep 28, 2026

32.1%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

12.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,082

11-50

641

51-200

181

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,986 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among enterprise security system providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “enterprise security system providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names enterprise security system providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among enterprise security system providers, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 8,667 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Enterprise security system providers by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names enterprise security system providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many enterprise security system providers are there based in the United Kingdom?

RevenueBase identified 1,986 enterprise security system providers headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Chubb Fire & Security, headquartered in Staines, tops this list with the largest team on record.

Which city has the most enterprise security system providers?

London leads with 248 headquartered companies, followed by Manchester (39) and Birmingham (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,667 verified decision-maker contacts tracked across these 1,986 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 Smart Search, 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.