Company lists · Data verified August 2026

Top 25 Automation systems integrators based in the United Kingdom

Name: Automation 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 676 companies tracked

There are 676 automation systems integrators headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 7,949 professional contacts across them, including 3,470 with verified work emails and 409 with mobile numbers. London is the largest hub.

This list covers automation 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.

676Companies

7,949Contacts tracked

3,470Verified emails

409Mobile numbers

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The 25 largest automation systems integrators based in the United Kingdom

Ranked by team size

Top 25 of 676 automation 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	Protec Fire And Security Group	Nelson	501-1,000	504	249
2	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
3	Contec	Chester	201-500	365	95
4	Capula	Reading	201-500	350	198
5	MARCH	Uk-Wide	1,001-5,000	279	158
6	ITI Group	Aberdeen	201-500	234	111
7	DPS Group	Aberdeen	51-200	139	44
8	Mpac Lambert	Tadcaster	501-1,000	110	30
9	PCE Automation	Beccles	201-500	104	67
10	Total Integrated Solutions TIS LTD	Leeds	51-200	96	64
11	Adsyst Automation Limited	Peterborough	51-200	94	60
12	OAL	Peterborough	51-200	89	27
13	Iconsys	Daresbury	51-200	74	57
14	Underwoods	Northampton	51-200	72	48
15	Tamaki Control LTD	Belfast	51-200	72	34
16	Loop Technology LTD	Dorchester	51-200	71	39
17	Infoteck Solutions	London	51-200	71	15
18	Denca Controls LTD	Widnes	51-200	67	46
19	Elmleigh	Hinckley	51-200	66	31
20	AIR Wakefield	Wakefield	51-200	65	45
21	Fairfield Control Systems LTD	Retford	51-200	61	46
22	Industrial Automation & Control	Newport	51-200	59	27
23	ID Systems UK	Cumbernauld	51-200	58	30
24	PCS Global PTY LTD	Birmingham	51-200	58	7
25	Alphatrack Systems	Harlow	201-500	56	34

Showing 25 of 676 automation systems integrators based in the United Kingdom

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Automation systems integrators based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 66 HQs

409Contacts with mobile numbers

27Emails re-verified in last 30 days

Companies by employee count

1-10

386

11-50

205

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Automation systems integrators by metro

Metro	Companies
Automation systems integrators in London	66
Automation systems integrators in Birmingham	15
Automation systems integrators in Manchester	11
Automation systems integrators in Telford	10
Automation systems integrators in Sheffield	8
Automation systems integrators in Bristol	7
Automation systems integrators in Leeds	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 “automation 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; 27 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 automation systems integrators are there based in the United Kingdom?

There are 676 automation systems 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 automation systems integrators?

London leads with 66 headquartered companies, followed by Birmingham (15) and Manchester (11).

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 3,470 verified decision-maker contacts tracked across these 676 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.