Company lists · Data verified August 2026

Top 25 Data center security installers based in the United Kingdom

Name: Data center security installers 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 1,694 companies tracked

There are 1,694 data center security installers headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 28,467 professional contacts across them, including 8,865 with verified work emails and 1,453 with mobile numbers. London is the largest hub.

This list covers data center security installers 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.

1,694Companies

28,467Contacts tracked

8,865Verified emails

1,453Mobile numbers

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The 25 largest data center security installers based in the United Kingdom

Ranked by team size

Top 25 of 1,694 data center security installers 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	Lodge Security	Cirencester	1,001-5,000	419	62
5	Marlowe Fire & Security	Newcastle Upon Tyne	501-1,000	398	288
6	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
7	Kings Secure Technologies	London	501-1,000	326	173
8	Northland Controls	Letchworth Garden City	201-500	266	129
9	Evolution Electronic Security Systems LTD	Birmingham	201-500	202	150
10	Openview Security Solutions Limited	Romford	201-500	200	86
11	Datalec Precision Installations Limited	Buntingford Herts	51-200	179	107
12	Texecom LTD	Haslingden	201-500	173	73
13	GBE Converge Part Of Mitie	London	501-1,000	166	100
14	Gough & Kelly	Leeds	51-200	161	34
15	LMG Lmgiq.com	London	201-500	153	94
16	Frontline Security Solutions	Chalfont St Peter	51-200	145	40
17	Senseco Systems Limited	Gillingham	201-500	108	59
18	Caretower An Integrity360 Company	London	201-500	97	12
19	Advancis Software & Services	Leeds	51-200	87	35
20	Croma Security Solutions Group PLC Cssg	Basingstoke Hamsphire	501-1,000	87	11
21	Ea-Rs Group LTD	Drumbo Lisburn	201-500	78	44
22	RHI Industrials LTD	Carlisle	51-200	71	43
23	SPY Alarms LTD	Orpington	201-500	70	50
24	ABEL	Solihull Birmingham	51-200	69	13
25	Black Diamond Security	London	201-500	62	14

Showing 25 of 1,694 data center security installers based in the United Kingdom

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Data center security installers based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 217 HQs

1,453Contacts with mobile numbers

16Emails re-verified in last 30 days

Companies by employee count

1-10

861

11-50

565

51-200

164

201-500

501-1,000

1,001-5,000

10001+

Data center security installers by metro

Metro	Companies
Data center security installers in London	217
Data center security installers in Manchester	33
Data center security installers in Leeds	23
Data center security installers in Birmingham	21
Data center security installers in Bristol	21
Data center security installers in Glasgow	18
Data center security installers in Belfast	17

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 “data center security installers”, 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; 16 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 data center security installers are there based in the United Kingdom?

There are 1,694 data center security installers 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 data center security installers?

London leads with 217 headquartered companies, followed by Manchester (33) and Leeds (23).

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 8,865 verified decision-maker contacts tracked across these 1,694 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.