Company lists · Data verified August 2026

Top 25 Commercial security services based in the United Kingdom

Name: Commercial security services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 2,408 companies tracked

There are 2,408 commercial security services headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 34,945 professional contacts across them, including 6,789 with verified work emails and 1,609 with mobile numbers. London is the largest hub.

This list covers commercial security services headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

2,408Companies

34,945Contacts tracked

6,789Verified emails

1,609Mobile numbers

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The 25 largest commercial security services based in the United Kingdom

Ranked by team size

Top 25 of 2,408 commercial security services based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Chubb Fire & Security	Staines	10001+	6,212	2,442
2	CIS Security Limited	London	1,001-5,000	913	201
3	Corps Security	Cardiff	1,001-5,000	842	81
4	Securigroup	n/a	1,001-5,000	761	131
5	Marlowe Fire & Security	Newcastle Upon Tyne	501-1,000	398	288
6	Ssgc LTD	Swindon	501-1,000	390	10
7	Avigilon	Milton Keynes	1,001-5,000	341	151
8	Kings Secure Technologies	London	501-1,000	326	173
9	Regency Security	Braintree	1,001-5,000	325	12
10	MAN Commercial Protection Limited	Shirley	1,001-5,000	223	26
11	Abca Fire And Security	Oldham	201-500	195	119
12	Bridgegate Security UK Limited	Leeds Leeds	1,001-5,000	179	1
13	Unitrust Protection Services	Wembley	201-500	175	21
14	Trigion Security Services LTD	Sidcup	201-500	166	3
15	Vigilant Security	London	1,001-5,000	133	23
16	Snsg LTD	Birmingham	201-500	119	5
17	Guardforce Security Limited	Hornchurch	501-1,000	111	7
18	Rossi Security	London	201-500	99	5
19	K4 Security - K4 Group	Manchester	201-500	90	8
20	Croma Security Solutions Group PLC Cssg	Basingstoke Hamsphire	501-1,000	87	11
21	T3 Security	Seaton Burn	501-1,000	81	6
22	Northern Security LTD	Middlesbrough	201-500	70	13
23	Britsafe Limited	York	501-1,000	66	12
24	Vigilance Certified B Corp	London	201-500	64	14
25	United Guarding Services LTD	n/a	201-500	63	6

Showing 25 of 2,408 commercial security services based in the United Kingdom

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Commercial security services based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 419 HQs

1,609Contacts with mobile numbers

30Emails re-verified in last 30 days

Companies by employee count

1-10

1,005

11-50

742

51-200

416

201-500

501-1,000

1,001-5,000

10001+

Commercial security services by metro

Metro	Companies
Commercial security services in London	419
Commercial security services in Birmingham	64
Commercial security services in Manchester	62
Commercial security services in Leeds	39
Commercial security services in Liverpool	28
Commercial security services in Bristol	26
Commercial security services in Glasgow	23

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “commercial security services”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 30 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many commercial security services are there based in the United Kingdom?

There are 2,408 commercial security services headquartered in the United Kingdom as of August 2026 (RevenueBase).

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 commercial security services?

London leads with 419 headquartered companies, followed by Birmingham (64) and Manchester (62).

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 6,789 verified decision-maker contacts tracked across these 2,408 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.