Company lists · Data refreshed September 2026

Top 21 Private security firms based in Ireland

Name: Private security firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 50 companies tracked

RevenueBase identified 50 private security firms headquartered in Ireland as of September 2026 and tracks 2,022 professional contacts across them, including 240 with verified work emails and 31 with mobile numbers. Dublin is the largest hub.

This list covers private security firms headquartered in Ireland, 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 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

50Companies

2,022Contacts tracked

240Verified emails

31Mobile numbers

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The 21 largest private security firms based in Ireland

Ranked by team size

Top 21 of 50 private security firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names private security firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Synergy Security SolutionsPartial evidence	Dublin 12, IrelandHQ checked Sep 5, 2026	1,001-5,000	400
	“Established in 1993 Synergy Security Solutions, is now one of the largest security service providers in Ireland.” Source: company website · checked Sep 5, 2026
2	Securitas IrelandPartial evidence	Clonee, IrelandHQ checked Sep 5, 2026	1,001-5,000	371
	“As the world’s leading intelligent security services provider, we proudly stand guard to protect what really matters – the safety and welfare of people and property everywhere.” Source: company website · checked Sep 5, 2026
3	Manguard PlusStrong evidence	Naas, IrelandHQ checked Sep 5, 2026	501-1,000	213
	“4-Time OSPA Winners (Outstanding Contract Security Company) 2022 - 2025 Manguard Plus is a privately owned, Irish Security company focused exclusively on the provision of Manned…” Source: company website · checked Sep 5, 2026
4	Septimius SecurityStrong evidence	Dublin, IrelandHQ checked Sep 5, 2026	201-500	100
	“Septimius Security stands alone as your global security partner offering: Global Presence, Local Expertise: Septimius Security is a global private security firm, combining…” Source: company website · checked Sep 5, 2026
5	Reconnaissance GroupIndirect evidence	Dublin, IrelandHQ checked Sep 5, 2026	1,001-5,000	73
	“Reconnaissance Group - We leave nothing to chance.” Source: company website · checked Sep 5, 2026
6	TOP Security GroupPartial evidence	Dublin, IrelandHQ checked Sep 5, 2026	501-1,000	67
	“From modest beginnings in 1979 Top Security has grown to become one of Ireland’s leading providers of security services and products.” Source: company website · checked Sep 5, 2026
7	Pulse Security ManagementStrong evidence	Dublin, IrelandHQ checked Sep 5, 2026	201-500	53
	“Provider of high end security services to the private & public sectors offering services in the following.” Source: company website · checked Sep 5, 2026
8	Frontline Security Group IrelandPartial evidence	Santry, IrelandHQ checked Sep 5, 2026	201-500	37
	“Frontline Security's underlying philosophy is to provide cost-effective and innovative security solutions for our clients.” Source: company website · checked Sep 5, 2026
9	Secure Management Solutions LTDPartial evidence	Dublin 24, IrelandHQ checked Sep 5, 2026	51-200	18
	“Secure Management Solutions (SMS) is a security company founded by highly experienced security company managers with 80 years of experience together.” Source: company website · checked Sep 5, 2026
10	Taskforce Security Management ServicesPartial evidence	Leinster, IrelandHQ checked Sep 5, 2026	51-200	16
	“Taskforce Security Management Services is a pioneering start-up that has emerged as a leader in the field of security services in Ireland.” Source: company website · checked Sep 5, 2026
11	CSC Covert Security Consultants LTDPartial evidence	Naas, IrelandHQ checked Sep 5, 2026	11-50	13
	“CSC Covert Security Consultants Ltd has proven expertise in electronic security systems and manned security guarding, providing a 360-degree security solution to all business…” Source: company website · checked Sep 5, 2026
12	KEY Guard Security LTDPartial evidence	Mullingar, IrelandHQ checked Sep 5, 2026	51-200	11
	“Key Guard Security is an Irish owned company which was established by Paul Ennis and Ray Moore.” Source: company website · checked Sep 5, 2026
13	Park 100 Fire & SecurityPartial evidence	Wexford, IrelandHQ checked Sep 5, 2026	11-50	9
	“Park 100 security specialists will design the best possible solution for you using state-of-the-art equipment to ensure safety 24/7 – 365 days a year.” Source: company website · checked Sep 5, 2026
14	Ktech Security & Property ServicesIndirect evidence	Dublin, IrelandHQ checked Sep 5, 2026	51-200	9
	“We offer a comprehensive service to determine the best solution for your requirements.” Source: company website · checked Sep 5, 2026
15	Phonelink SecurityPartial evidence	Arklow, IrelandHQ checked Sep 5, 2026	1-10	5
	“Phone-Link Security is a 100% Irish owned and operated company with offices in Arklow, Co.” Source: company website · checked Sep 5, 2026
16	Immediate Action LTDPartial evidence	Dublin 8, IrelandHQ checked Sep 5, 2026	1-10	5
	“At Immediate Action our core business is Integrated Security Solutions.” Source: company website · checked Sep 5, 2026
17	Gallice International ServicesPartial evidence	Dublin, IrelandHQ checked Sep 5, 2026	11-50	5
	“Created in 2007, GALLICE International Services is a international security company based in Dublin.” Source: company website · checked Sep 5, 2026
18	Ashtree Risk GroupPartial evidence	Dublin, IrelandHQ checked Sep 5, 2026	11-50	4
	“Ashtree Risk Group is Ireland’s leading Investigation and Security team.” Source: company website · checked Sep 5, 2026
19	SAR Consultancy Security Analysis & ResearchPartial evidence	Naas, IrelandHQ checked Sep 5, 2026	1-10	4
	“SAR Consultancy is a consultancy company committed to examining security situations from diverse perspectives to identify appropriate vulnerabilities and risks for its clients…” Source: company website · checked Sep 5, 2026
20	Advance ProtectionIndirect evidence	Dublin 12, IrelandHQ checked Sep 5, 2026	1-10	2
	“Advance Protection is an executive protection company founded in 2019.” Source: company website · checked Sep 5, 2026
21	Delta Kilo Security Limited, DublinPartial evidence	Clondalkin, IrelandHQ checked Sep 5, 2026	1-10	1
	“At Delta Kilo Security Limited, we believe in the power of prevention.” Source: company website · checked Sep 5, 2026

Showing 21 of 50 private security firms based in Ireland

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Private security firms based in Ireland at a glance

As of Sep 5, 2026

51-200Median size (employees)

DublinLargest hub · 18 HQs

31Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

229

31–60

61–90

90–180

180+

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 private security firms, 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 Ireland whose own description of what they do matches “private security firms”. 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 private security firms, and records with no verified work email. Companies headquartered outside Ireland 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, 240 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 5, 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.

Frequently asked

How many private security firms are there based in Ireland?

RevenueBase identified 50 private security firms headquartered in Ireland 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?

Synergy Security Solutions, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most private security firms?

Dublin leads with 18 headquartered companies, followed by Naas (5) and Arklow (1).

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 240 verified decision-maker contacts tracked across these 50 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 5, 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.