Company lists · Data refreshed September 2026
Top 25 Access control systems integrators based in the United Kingdom
RevenueBase identified 669 access control systems integrators headquartered in the United Kingdom as of September 2026 and tracks 6,078 professional contacts across them, including 2,332 with verified work emails. London is the largest hub.
This list covers access control systems 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 27, 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 access control systems integrators based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 326 contacts → | ||||
Strong evidence “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 255 contacts → | ||||
Indirect evidence “With 40 years of experience, Paxton is a company passionate about technology.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 157 contacts → | ||||
Strong evidence “Norbain is a leading UK security distributor, covering video surveillance, access control & intruder detection solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 116 contacts → | ||||
Partial 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 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 111 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 94 contacts → | ||||
Indirect evidence “Better protect your people, places and spaces.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 72 contacts → | ||||
Partial evidence “The UK Leading Security Specialists for Automatic Doors, Roller Shutters, Industrial Doors, Complete Entry Systems Gates and Barriers.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 62 contacts → | ||||
Indirect evidence “ABLOY UK are the UK’s leading experts on high quality door locking and functionality.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 61 contacts → | ||||
Indirect evidence “WLS (West London Security) has been providing security and solutions to London's homes and businesses for over 40 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 57 contacts → | ||||
Partial evidence “At Alphatrack Systems Ltd, we don’t just install equipment-we engineer integrated solutions that deliver safety, compliance, and ultimate peace of mind.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 51 contacts → | ||||
Indirect evidence “Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 48 contacts → | ||||
Indirect evidence “Reimagining how people interact with spaces.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 47 contacts → | ||||
Strong evidence “Simkiss Control Systems, part of United Infrastructure Group, is a trusted name in the field of industrial automation and control systems.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 46 contacts → | ||||
Strong evidence “Ajar Technology is a successful and highly regarded end-to-end systems integrator with bases in Brentford and Bolton.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 43 contacts → | ||||
Indirect evidence “Established since 1994, Crime and Fire delivers state-of-the-art cost-effective security solutions, to the highest quality and safety standards.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 40 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 contacts → | ||||
Strong evidence “Whether installing fire, security, or access control systems - or transforming your home using the latest smart technology - Chris Lewis Group can deliver exceptional solutions to…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 38 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Strong evidence “We are systems integrators.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 36 contacts → | ||||
Strong evidence “We are the experts in door entry and access control and have been supplying and manufacturing systems for 40 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 32 contacts → | ||||
Strong evidence “Master Systems Integrator OKTO Technologies is a leader in the design, development & installation of Smart Building Technology for- SuperPrime Residential - Luxury Hospitality -…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 32 contacts → | ||||
Indirect evidence “Founded in 1974, Lincoln Security Ltd.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 31 contacts → | ||||
Partial evidence “Ceaton Security Services Ltd is based in South Wales, specialising in the design, installation, service & maintenance of Automation, Fire, Fire Door & Security Systems - not…” Source: RevenueBase Database · checked Sep 27, 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: access control systems 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 access control systems integrators.
- Partial evidence
- Its own public description names part of access control systems integrators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name access control systems 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 669 access control systems integrators based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,332 reachable decision-makers.
Free signup · no credit card
Access control systems integrators based in the United Kingdom at a glance
As of Sep 27, 2026Companies by employee count
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 669 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 access control systems 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 “access control systems 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 access control systems 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 access control systems 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, 2,332 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 27, 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.
Access control systems 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 access control systems 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 access control systems integrators are there based in the United Kingdom?
RevenueBase identified 669 access control systems 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?
Trinity Fire & Security Systems, headquartered in Exeter, tops this list with the largest team on record.
Which city has the most access control systems integrators?
London leads with 84 headquartered companies, followed by Birmingham (9) and Manchester (9).
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 2,332 verified decision-maker contacts tracked across these 669 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 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 669 access control systems integrators based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Access control systems integrators by geography
- Access control systems integrators based in Pune, India
- Access control systems integrators based in Stockholm, Sweden
- Access control systems integrators based in Dubai, United Arab Emirates
- Access control systems integrators based in London, United Kingdom
- Access control systems integrators based in Dallas, United States
- Access control systems integrators based in Houston, United States
- Access control systems integrators based in New York, United States
- Access control systems integrators based in Argentina
- Access control systems integrators based in Australia
- Access control systems integrators based in Belgium
- Access control systems integrators based in Brazil
- Access control systems integrators based in Canada
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Access control systems integrators based in Pune, India
- Access control systems integrators based in Stockholm, Sweden
- Access control systems integrators based in Dubai, United Arab Emirates
- Access control systems integrators based in London, United Kingdom
- Access control systems integrators based in Dallas, United States
- Access control systems integrators based in Houston, United States