Company lists · Data refreshed September 2026
Top 13 Security and access control companies based in Belfast, United Kingdom
RevenueBase identified 28 security and access control companies headquartered in Belfast, United Kingdom as of September 2026 and tracks 229 professional contacts across them, including 105 with verified work emails. London is the largest hub.
This list covers security and access control companies headquartered in Belfast, 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, how directly it supports the match, 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 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.
The 13 largest security and access control companies based in Belfast, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 37 | ||||
“With over 40 years’ experience in the industry, we work with our customers to help to create secure, safe, sustainable and efficient environments.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | VIS Security Solutions LimitedPartial evidence | 30 | |||
“WELCOME TO VIS SECURITY SOLUTIONS LIMITED Headquartered in the UK and Ireland, ViS specialises in providing bespoke physical security solutions by converging multiple advanced…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25 | ||||
“We provide both New Build Solutions and Maintenance Contracts for companies throughout the UK & Ireland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | ESS LTDPartial evidence | 19 | |||
“ESS is the largest independent security specialists in Northern Ireland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 17 | ||||
“At Diamond Systems, our purpose is simple.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Specialised Fire & Security LTDPartial evidence | 15 | |||
“Established in 2013, the company has grown to be one of the best known and respected independent specialist fire and security providers working with and for a wide range of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | GDC Fire And Security NI LTDPartial evidence | 4 | |||
“GDC Fire & Security is a multi-award-winning, family-run company specialising in fire protection, life safety, and integrated security systems.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Focus Security Solutions NI LTDPartial evidence | 3 | |||
“Focus Security Solutions is a forward thinking, experienced provider of security and fire systems to the Northern Ireland market and beyond.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Videplus NI LTDStrong evidence | 3 | |||
“Videplus has more than 25 years professional experience, providing a full range of CCTV, Access Control and Fire equipment solutions which we can distribute throughout the UK and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | PFSPartial evidence | 3 | |||
“PFS - Professional Fire and Security specialises in the installation and maintenance of all electronic security and fire systems.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3 | ||||
“One Platform.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Insec NIPartial evidence | 3 | |||
“Insec NI are a Belfast based security company supplying various different security services including: CCTV, Key holding, SIA licensed operatives, Mobile Patrol and Response…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2 | ||||
“Armatas provides the installation of Fire, CCTV, Intruder Alarms and Access Control Systems to commercial and domestic customers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 13 of 28 security and access control companies based in Belfast, United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 105 reachable decision-makers.
Free signup · no credit card
Security and access control companies based in Belfast, United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Belfast, over 28 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 security and access control companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Belfast, United Kingdom whose own description of what they do matches “security and access control companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security and access control companies, and records with no verified work email. Companies headquartered outside Belfast 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 an evidence 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, 105 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 and access control companies by metro in the United Kingdom
- Security and access control companies in London346
- Security and access control companies in Manchester73
- Security and access control companies in Birmingham49
- Security and access control companies in Glasgow36
- Security and access control companies in Leeds31
- Security and access control companies in Nottingham30
- Security and access control companies in Belfast28
- Security and access control companies in Leicester27
- Security and access control companies in Liverpool27
- Security and access control companies in Bristol26
- Security and access control companies in Sheffield25
Frequently asked
How many security and access control companies are there based in Belfast, United Kingdom?
RevenueBase identified 28 security and access control companies headquartered in Belfast, 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?
Atlas World, headquartered in Belfast, tops this list with the largest team on record.
Which city has the most security and access control companies?
London leads with 346 headquartered companies, followed by Manchester (73) and Birmingham (49).
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 105 verified decision-maker contacts tracked across these 28 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.
Ready to reach these companies? Verified emails and direct dials for all 28 security and access control companies based in Belfast, United Kingdom. Start with a free account, no credit card.
Get the full listRelated lists
Security and access control companies by geography
- Security and access control companies based in the United States
- Security and access control companies based in the United Kingdom
- Security and access control companies based in Brazil
- Security and access control companies based in France
- Security and access control companies based in Australia
- Security and access control companies based in Germany
- Security and access control companies based in Canada
- Security and access control companies based in Italy
- Security and access control companies based in South Africa
- Security and access control companies based in Spain
- Security and access control companies based in the Netherlands
- Security and access control companies based in Mexico
Browse the directory
Browse: Companies home · Security and access control companies in United Kingdom · All United Kingdom lists · All Security and access control companies lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security and access control companies based in the United States
- Security and access control companies based in the United Kingdom
- Security and access control companies based in Brazil
- Security and access control companies based in France
- Security and access control companies based in Australia
- Security and access control companies based in Germany