Company lists · Data verified August 2026

Top 25 Data center security system integrators based in the United Kingdom

Name: Data center security system integrators 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 979 companies tracked

There are 979 data center security system integrators headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 10,258 professional contacts across them, including 4,203 with verified work emails and 702 with mobile numbers. London is the largest hub.

This list covers data center security system integrators 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.

979Companies

10,258Contacts tracked

4,203Verified emails

702Mobile numbers

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The 25 largest data center security system integrators based in the United Kingdom

Ranked by team size

Top 25 of 979 data center security system integrators 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	Protec Fire And Security Group	Nelson	501-1,000	504	249
2	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
3	Kings Secure Technologies	London	501-1,000	326	173
4	Northland Controls	Letchworth Garden City	201-500	266	129
5	Evolution Electronic Security Systems LTD	Birmingham	201-500	202	150
6	Openview Security Solutions Limited	Romford	201-500	200	86
7	Datalec Precision Installations Limited	Buntingford Herts	51-200	179	107
8	Norbain SD	Blackpool	51-200	156	69
9	LMG Lmgiq.com	London	201-500	153	94
10	Frontline Security Solutions	Chalfont St Peter	51-200	145	40
11	Modern Networks LTD	Exeter	51-200	130	96
12	European Electronique	Witney	51-200	116	51
13	Caretower An Integrity360 Company	London	201-500	97	12
14	Total Integrated Solutions TIS LTD	Leeds	51-200	96	64
15	Optilan	Warwick	201-500	94	15
16	Ea-Rs Group LTD	Drumbo Lisburn	201-500	78	44
17	Sword Ping Network Solutions	Bellshill	51-200	56	40
18	Alphatrack Systems	Harlow	201-500	56	34
19	Thompson Group	Leyland	51-200	54	26
20	ACE Fire And Security	Bedford	51-200	51	32
21	Sensetech Systems LTD	London	51-200	49	33
22	Electranet UK Limited	London	51-200	49	6
23	Simkiss Control Systems LTD	Manchester	51-200	47	28
24	Optyma Security Systems LTD	Bexleyheath	51-200	45	32
25	The Chris Lewis Group	Oxford	51-200	40	24

Showing 25 of 979 data center security system integrators based in the United Kingdom

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Data center security system integrators based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 150 HQs

702Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

496

11-50

338

51-200

201-500

501-1,000

1,001-5,000

Data center security system integrators by metro

Metro	Companies
Data center security system integrators in London	150
Data center security system integrators in Manchester	19
Data center security system integrators in Birmingham	13
Data center security system integrators in Bristol	12
Data center security system integrators in Leeds	12
Data center security system integrators in Belfast	10
Data center security system integrators in Reading	9

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 system integrators”, 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; 3 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 system integrators are there based in the United Kingdom?

There are 979 data center security system integrators headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Protec Fire And Security Group, headquartered in Nelson, tops this list with the largest team on record.

Which city has the most data center security system integrators?

London leads with 150 headquartered companies, followed by Manchester (19) and Birmingham (13).

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 4,203 verified decision-maker contacts tracked across these 979 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.