Company lists · Data verified August 2026

Top 25 Cyber-physical security companies based in the United Kingdom

Name: Cyber-physical security companies 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 1,518 companies tracked

There are 1,518 cyber-physical security companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 37,026 professional contacts across them, including 11,898 with verified work emails and 3,238 with mobile numbers. London is the largest hub.

This list covers cyber-physical security companies 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.

1,518Companies

37,026Contacts tracked

11,898Verified emails

3,238Mobile numbers

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The 25 largest cyber-physical security companies based in the United Kingdom

Ranked by team size

Top 25 of 1,518 cyber-physical security companies 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	Mitie Security	Northampton	10001+	1,513	253
3	CIS Security Limited	London	1,001-5,000	913	201
4	SISA	Leicester	201-500	739	253
5	Claroty	London	501-1,000	729	152
6	Everfox	London	1,001-5,000	635	13
7	Opsec Security	Washington	501-1,000	450	152
8	Lodge Security	Cirencester	1,001-5,000	419	62
9	Marlowe Fire & Security	Newcastle Upon Tyne	501-1,000	398	288
10	Avigilon	Milton Keynes	1,001-5,000	341	151
11	Hanwha Vision Europe	Salford	201-500	333	3
12	Kings Secure Technologies	London	501-1,000	326	173
13	Bridewell	Edinburgh	201-500	304	189
14	Quorum Cyber	Edinburgh	201-500	292	177
15	Northland Controls	Letchworth Garden City	201-500	266	129
16	Evolution Electronic Security Systems LTD	Birmingham	201-500	202	150
17	Openview Security Solutions Limited	Romford	201-500	200	86
18	Texecom LTD	Haslingden	201-500	173	73
19	Exclusive Networks UK	Mansfield	201-500	168	118
20	Trigion Security Services LTD	Sidcup	201-500	166	3
21	Senseco Systems Limited	Gillingham	201-500	108	59
22	Nedap Security	Reading	1,001-5,000	94	2
23	Croma Security Solutions Group PLC Cssg	Basingstoke Hamsphire	501-1,000	87	11
24	Ea-Rs Group LTD	Drumbo Lisburn	201-500	78	44
25	City Security Services Part Of City Group Security	London	201-500	64	1

Showing 25 of 1,518 cyber-physical security companies based in the United Kingdom

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Cyber-physical security companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 274 HQs

3,238Contacts with mobile numbers

24Emails re-verified in last 30 days

Companies by employee count

1-10

690

11-50

513

51-200

190

201-500

501-1,000

1,001-5,000

10001+

Cyber-physical security companies by metro

Metro	Companies
Cyber-physical security companies in London	274
Cyber-physical security companies in Manchester	35
Cyber-physical security companies in Birmingham	26
Cyber-physical security companies in Leeds	25
Cyber-physical security companies in Bristol	15
Cyber-physical security companies in Glasgow	14
Cyber-physical security companies in Leicester	13

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 “cyber-physical security companies”, 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; 24 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 cyber-physical security companies are there based in the United Kingdom?

There are 1,518 cyber-physical security companies 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 cyber-physical security companies?

London leads with 274 headquartered companies, followed by Manchester (35) and Birmingham (26).

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 11,898 verified decision-maker contacts tracked across these 1,518 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

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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.