Company lists · Data verified August 2026

Top 25 Control systems integrators based in the United Kingdom

Name: Control systems 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 685 companies tracked

There are 685 control systems integrators headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 8,408 professional contacts across them, including 3,196 with verified work emails and 650 with mobile numbers. London is the largest hub.

This list covers control systems 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.

685Companies

8,408Contacts tracked

3,196Verified emails

650Mobile numbers

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The 25 largest control systems integrators based in the United Kingdom

Ranked by team size

Top 25 of 685 control systems 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	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
2	Contec	Chester	201-500	365	95
3	MARCH	Uk-Wide	1,001-5,000	279	158
4	DPS Group	Aberdeen	51-200	139	44
5	Sella Controls A Hima Company	Stockport	51-200	123	77
6	PCE Automation	Beccles	201-500	104	67
7	Petrotech INC	Bury St. Edmunds	51-200	98	51
8	Total Integrated Solutions TIS LTD	Leeds	51-200	96	64
9	Adsyst Automation Limited	Peterborough	51-200	94	60
10	Iconsys	Daresbury	51-200	74	57
11	RSE Control Systems Saftronics	Leeds	51-200	68	39
12	Denca Controls LTD	Widnes	51-200	67	46
13	Elmleigh	Hinckley	51-200	66	31
14	AIR Wakefield	Wakefield	51-200	65	45
15	RSE Control Systems Blackburn Starling	Nottingham	51-200	62	42
16	Fairfield Control Systems LTD	Retford	51-200	61	46
17	Industrial Automation & Control	Newport	51-200	59	27
18	ID Systems UK	Cumbernauld	51-200	58	30
19	PCS Global PTY LTD	Birmingham	51-200	58	7
20	Alphatrack Systems	Harlow	201-500	56	34
21	The Automated Technology Group	Silsoe	201-500	52	6
22	AJS Control & Automation	n/a	51-200	49	32
23	Simkiss Control Systems LTD	Manchester	51-200	47	28
24	Proeon Systems LTD	Norwich	51-200	46	32
25	Lloyd Morris Electrical LTD	Llay	51-200	46	23

Showing 25 of 685 control systems integrators based in the United Kingdom

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Control systems integrators based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 40 HQs

650Contacts with mobile numbers

8Emails re-verified in last 30 days

Companies by employee count

1-10

392

11-50

207

51-200

201-500

501-1,000

1,001-5,000

10001+

Control systems integrators by metro

Metro	Companies
Control systems integrators in London	40
Control systems integrators in Birmingham	15
Control systems integrators in Leeds	12
Control systems integrators in Sheffield	9
Control systems integrators in Bristol	8
Control systems integrators in Glasgow	8
Control systems integrators in Telford	7

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 “control systems 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; 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 control systems integrators are there based in the United Kingdom?

There are 685 control systems integrators headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Trinity Fire & Security Systems, headquartered in Wallsend, tops this list with the largest team on record.

Which city has the most control systems integrators?

London leads with 40 headquartered companies, followed by Birmingham (15) and Leeds (12).

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 3,196 verified decision-maker contacts tracked across these 685 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.