Company lists · Data verified August 2026

Top 25 Building automation security companies based in the United Kingdom

Name: Building automation 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 1,488 companies tracked

There are 1,488 building automation security companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 20,865 professional contacts across them, including 8,443 with verified work emails and 1,010 with mobile numbers. London is the largest hub.

This list covers building automation 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.

1,488Companies

20,865Contacts tracked

8,443Verified emails

1,010Mobile numbers

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The 25 largest building automation security companies based in the United Kingdom

Ranked by team size

Top 25 of 1,488 building automation 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	Protec Fire And Security Group	Nelson	501-1,000	504	249
3	Marlowe Fire & Security	Newcastle Upon Tyne	501-1,000	398	288
4	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
5	Kings Secure Technologies	London	501-1,000	326	173
6	Gratte Brothers Group	London	501-1,000	266	150
7	Northland Controls	Letchworth Garden City	201-500	266	129
8	Scci Alphatrack	Harlow	201-500	204	94
9	Evolution Electronic Security Systems LTD	Birmingham	201-500	202	150
10	Openview Security Solutions Limited	Romford	201-500	200	86
11	Abec LTD	London	51-200	174	110
12	DOWDS	London	201-500	164	122
13	Gough & Kelly	Leeds	51-200	161	34
14	LMG Lmgiq.com	London	201-500	153	94
15	Frontline Security Solutions	Chalfont St Peter	51-200	145	40
16	MCS	London	51-200	135	86
17	Trend Control Systems	Horsham	501-1,000	113	35
18	Senseco Systems Limited	Gillingham	201-500	108	59
19	KCP Network	Bracknell	51-200	81	20
20	Ea-Rs Group LTD	Drumbo Lisburn	201-500	78	44
21	Alphatrack Systems	Harlow	201-500	56	34
22	Sensetech Systems LTD	London	51-200	49	33
23	Simkiss Control Systems LTD	Manchester	51-200	47	28
24	Optyma Security Systems LTD	Bexleyheath	51-200	45	32
25	SMC Smart Homes	London	51-200	42	35

Showing 25 of 1,488 building automation security companies based in the United Kingdom

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Building automation security companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 210 HQs

1,010Contacts with mobile numbers

42Emails re-verified in last 30 days

Companies by employee count

1-10

775

11-50

508

51-200

128

201-500

501-1,000

1,001-5,000

10001+

Building automation security companies by metro

Metro	Companies
Building automation security companies in London	210
Building automation security companies in Manchester	26
Building automation security companies in Leeds	20
Building automation security companies in Bristol	18
Building automation security companies in Birmingham	16
Building automation security companies in Glasgow	16
Building automation security companies in Sheffield	15

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 “building automation 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; 42 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 building automation security companies are there based in the United Kingdom?

There are 1,488 building automation 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 building automation security companies?

London leads with 210 headquartered companies, followed by Manchester (26) and Leeds (20).

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 8,443 verified decision-maker contacts tracked across these 1,488 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.