Company lists · Data refreshed September 2026
Top 25 Security system integrators based in the United Kingdom
RevenueBase identified 2,714 security system integrators headquartered in the United Kingdom as of September 2026 and tracks 29,053 professional contacts across them, including 10,819 with verified work emails and 1,406 with mobile numbers. London is the largest hub.
This list covers security system integrators 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 6, 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.
The 25 largest security system integrators based in the United Kingdom
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 6,169 contacts → | |||
“Making the world a safer place.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Strong evidence | 493 contacts → | |||
“Through our team of over 900 creative individuals, we've positioned ourselves as a respected force as a life safety systems integrator.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Strong evidence | 393 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Partial evidence | 389 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 386 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Partial evidence | 333 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Strong evidence | 326 contacts → | |||
“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Partial evidence | 205 contacts → | |||
“Part of the SCCI Group, SCCI Alphatrack designs, installs, and maintains connected building systems across social housing, commercial property, new builds, and public sector…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Strong evidence | 200 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Partial evidence | 200 contacts → | |||
“OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 170 contacts → | |||
“Looking after the things people care about, wherever they are’.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Partial evidence | 166 contacts → | |||
“Trigion Security Services is the UK provider of Security Guarding and Technical Solutions for Facilicom UK.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Strong evidence | 159 contacts → | |||
“QCIC is an award-winning global engineering firm specialising in designing, building and running security systems.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Partial evidence | 157 contacts → | |||
“Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Partial evidence | 157 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Strong evidence | 153 contacts → | |||
“Pointer Limited We are a Specialist Fire and Security Services Integrator.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Strong evidence | 145 contacts → | |||
“Frontline Security Solutions is a global electronic security integrator specialising in Access Control, CCTV, Intruder and Intercom systems that protect people, property and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Partial evidence | 124 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Strong evidence | 120 contacts → | |||
“Reliance High-Tech is the UK's largest independent integrator of security and lone worker solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Strong evidence | 119 contacts → | |||
“Global Fire and Security Systems are market leaders in providing quality product solutions to services through the Fire and Security market place nationwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Strong evidence | 119 contacts → | |||
“Cinos is an industry-leading, agile, and innovative systems integrator.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Strong evidence | 117 contacts → | |||
“European Electronique is a leading UK systems Integrator, specialising in the delivery of secure technology platforms including Hybrid IT, Cyber Security and Networking…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Strong evidence | 116 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Strong evidence | 107 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Partial evidence | 101 contacts → | |||
“Videcon is a leading trade-only distributor of CCTV, Fire, Intruder & Access Control products to the UK security market.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
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: security system integrators. 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 security system integrators.
- Partial evidence
- Its own public description names part of security system integrators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security system integrators. 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 2,714 security system integrators based in the United Kingdom
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Security system integrators based in the United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 security system integrators, 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 “security system integrators”. 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 security system integrators), 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 security system integrators, 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, 10,819 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 6, 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.
Security system integrators 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 security system integrators, 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 security system integrators are there based in the United Kingdom?
RevenueBase identified 2,714 security system integrators 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 security system integrators?
London leads with 307 headquartered companies, followed by Manchester (53) and Birmingham (34).
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 10,819 verified decision-maker contacts tracked across these 2,714 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 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 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.
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