Company lists · Data verified August 2026

Top 25 Armed security guard services based in London, United Kingdom

Name: Armed security guard services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 452 companies tracked

There are 452 armed security guard services headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 6,370 professional contacts across them, including 648 with verified work emails and 161 with mobile numbers. London is the largest hub.

This list covers armed security guard services headquartered in London, 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.

452Companies

6,370Contacts tracked

648Verified emails

161Mobile numbers

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The 25 largest armed security guard services based in London, United Kingdom

Ranked by team size

Top 25 of 452 armed security guard services based in London, 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	CIS Security Limited	London	1,001-5,000	913	201
2	Wise Security Services LTD	London	501-1,000	204	7
3	Guarding UK	London	501-1,000	164	29
4	GET Licensed	London	51-200	163	66
5	Vigilant Security	London	1,001-5,000	133	23
6	The Keyholding Company	London	51-200	133	2
7	Rossi Security	London	201-500	99	5
8	Servoca Secure Solutions Limited	London	51-200	85	4
9	KK Security & FM LTD	London	201-500	71	6
10	Vigilance Certified B Corp	London	201-500	64	14
11	City Security Services Part Of City Group Security	London	201-500	64	1
12	Black Diamond Security	London	201-500	62	14
13	Ak9 Security And FM Solutions LTD	London	501-1,000	43	9
14	Cerberus Security	London	201-500	32	4
15	Herongrange Group Limited	London	201-500	31	11
16	Accolade	London	201-500	30	5
17	W4g Fire & Security	London	51-200	28	11
18	M4 Security Group Limited	London	51-200	21	2
19	Line Security Services LTD	London	51-200	16	2
20	SSG Support Services Group LTD	London	201-500	15	4
21	Inline Risk Solutions LTD	London	51-200	14	4
22	Jaguar Security LTD	London	1,001-5,000	14	1
23	Harris Security Services LTD	London	51-200	13	1
24	Team4 Security	London	201-500	12	2
25	Intraguard Limited	London	51-200	12	1

Showing 25 of 452 armed security guard services based in London, United Kingdom

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Armed security guard services based in London, United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 452 HQs

161Contacts with mobile numbers

8Emails re-verified in last 30 days

Companies by employee count

1-10

126

11-50

139

51-200

122

201-500

501-1,000

1,001-5,000

10001+

Armed security guard services by metro in the United Kingdom

Metro	Companies
Armed security guard services in London	452
Armed security guard services in Manchester	62
Armed security guard services in Birmingham	59
Armed security guard services in Leeds	39
Armed security guard services in Bristol	22
Armed security guard services in Liverpool	20
Armed security guard services in Glasgow	20

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 “armed security guard services”, with match quality audited by blind human judging, and headquartered in London, 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; 8 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 armed security guard services are there based in London, United Kingdom?

There are 452 armed security guard services headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

CIS Security Limited, headquartered in London, tops this list with the largest team on record.

Which city has the most armed security guard services?

London leads with 452 headquartered companies, followed by Manchester (62) and Birmingham (59).

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 648 verified decision-maker contacts tracked across these 452 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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Related lists

Armed security guard services by geography

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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.