Company lists · Data refreshed September 2026

Top 25 Refinery automation system integrators based in the United Kingdom

Name: Refinery automation system integrators based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 481 companies tracked

RevenueBase identified 481 refinery automation system integrators headquartered in the United Kingdom as of September 2026 and tracks 8,439 professional contacts across them, including 3,411 with verified work emails. London is the largest hub.

This list covers refinery automation 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

481Companies

8,439Contacts tracked

3,411Verified emails

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The 25 largest refinery automation system integrators based in the United Kingdom

Ranked by team size

Top 25 of 481 refinery automation system integrators based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery automation system integrators: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Proserv	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	501-1,000	924 contacts →
	Indirect evidence “Proserv is the controls technology partner powering progress across the global energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
2	IMI Process Automation	Partial evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	1,001-5,000	908 contacts →
	Partial evidence “We engineer advanced automation solutions that improve efficiency, sustainability and safety in severe service applications, including oil and gas, power, and marine.” Source: RevenueBase Database · checked Sep 17, 2026
3	Capula	Partial evidence	Stone, United KingdomHQ checked Sep 17, 2026	201-500	351 contacts →
	Partial evidence “What we do \| With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Source: RevenueBase Database · checked Sep 17, 2026
4	Booth Welsh	Partial evidence	Irvine, United KingdomHQ checked Sep 17, 2026	201-500	192 contacts →
	Partial evidence “Booth Welsh is a global engineering technology company with over 30 years of experience in electrical, control systems, and instrumentation.” Source: RevenueBase Database · checked Sep 17, 2026
5	DPS Group	Indirect evidence	Glenrothes, United KingdomHQ checked Sep 17, 2026	51-200	139 contacts →
	Indirect evidence “Shaping the future, together.” Source: RevenueBase Database · checked Sep 17, 2026
6	Sella Controls A Hima Company	Strong evidence	Cheshire, United KingdomHQ checked Sep 17, 2026	51-200	120 contacts →
	Strong evidence “SELLA CONTROLS - A HIMA Company, is a designer and supplier of integrated safety, control and automation systems and specialises in delivering the following: Process Control and…” Source: RevenueBase Database · checked Sep 17, 2026
7	Orbital GAS Systems Bilfinger Nzero	Partial evidence	Stone, United KingdomHQ checked Sep 17, 2026	51-200	109 contacts →
	Partial evidence “Over the past 30 years, Orbital has grown to become one of the UK's largest independent system integration organisations handling various contracts ranging in value.” Source: RevenueBase Database · checked Sep 17, 2026
8	PCE Automation	Strong evidence	Beccles, United KingdomHQ checked Sep 17, 2026	201-500	105 contacts →
	Strong evidence “Formed in 1961, PCE Automation Ltd has established itself as an automation solutions provider for a wide range of product handling, assembling and testing systems with a worldwide…” Source: RevenueBase Database · checked Sep 17, 2026
9	Parmley Graham LTD	Indirect evidence	Gateshead, United KingdomHQ checked Sep 17, 2026	51-200	100 contacts →
	Indirect evidence “Empowering Industry with Innovation, Expertise, and Trusted Supply.” Source: RevenueBase Database · checked Sep 17, 2026
10	Adsyst Automation Limited	Strong evidence	Yateley, United KingdomHQ checked Sep 17, 2026	51-200	93 contacts →
	Strong evidence “As a System Integrator for over 35 years, Adsyst (Automation) Ltd has been providing complex Control Systems for Process Control, Automation and Telemetry to customers worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
11	Iconsys	Strong evidence	Telford, United KingdomHQ checked Sep 17, 2026	51-200	75 contacts →
	Strong evidence “Established in 1987, iconsys is a leading UK power & automation solutions provider and systems integrator.” Source: RevenueBase Database · checked Sep 17, 2026
12	Denca Controls LTD	Strong evidence	Widnes, United KingdomHQ checked Sep 17, 2026	51-200	66 contacts →
	Strong evidence “Renowned across numerous sectors as 'the systems integrator of choice', we have built a reputation on delivering high quality, value-for-money solutions that enhance production…” Source: RevenueBase Database · checked Sep 17, 2026
13	Elmleigh	Strong evidence	Hinckley, United KingdomHQ checked Sep 17, 2026	51-200	63 contacts →
	Strong evidence “Elmleigh are specialists in the integration of electrical and mechanical automation systems offering a complete Project Management service from conception through design…” Source: RevenueBase Database · checked Sep 17, 2026
14	Fairfield Control Systems LTD	Partial evidence	Retford, United KingdomHQ checked Sep 17, 2026	51-200	61 contacts →
	Partial evidence “Fairfield Control Systems Ltd specialise in the design, manufacture, installation, commissioning and service support of industrial control solutions across a wide range of markets.” Source: RevenueBase Database · checked Sep 17, 2026
15	Industrial Automation & Control	Strong evidence	Newport, United KingdomHQ checked Sep 17, 2026	51-200	59 contacts →
	Strong evidence “IAC is the UK's leading Independent systems integrator, specialising primarily in variable speed drive systems.” Source: RevenueBase Database · checked Sep 17, 2026
16	ID Systems UK	Partial evidence	Cumbernauld, United KingdomHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “Since 2002, we have been providing turnkey solutions which bring together our core skills of mechanical, electrical, instrumentation, control and automation, and telemetry…” Source: RevenueBase Database · checked Sep 17, 2026
17	Yokogawa UK LTD	Partial evidence	Runcorn, United KingdomHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Yokogawa United Kingdom Limited is a leading provider of industrial automation technologies and services to the UK and Ireland markets.” Source: RevenueBase Database · checked Sep 17, 2026
18	Applied Integration UK LTD	Strong evidence	Stokesley, United KingdomHQ checked Sep 17, 2026	11-50	54 contacts →
	Strong evidence “Applied Integration is one of the UK’s leading independent systems integrators, delivering cutting edge solutions to 21st Century industry.” Source: RevenueBase Database · checked Sep 17, 2026
19	ICSS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	11-50	51 contacts →
	Partial evidence “Experts in Industrial Automation.” Source: RevenueBase Database · checked Sep 17, 2026
20	Proeon Systems LTD	Strong evidence	Norwich, United KingdomHQ checked Sep 17, 2026	51-200	47 contacts →
	Strong evidence “Proeon Systems - an independent specialist systems integrator, with +20 years experience supplying control and safety solutions for complex and critical applications across the…” Source: RevenueBase Database · checked Sep 17, 2026
21	Simkiss Control Systems LTD	Strong evidence	Middleton, United KingdomHQ checked Sep 17, 2026	51-200	47 contacts →
	Strong evidence “Simkiss Control Systems, part of United Infrastructure Group, is a trusted name in the field of industrial automation and control systems.” Source: RevenueBase Database · checked Sep 17, 2026
22	TLA Distribution LTD	Indirect evidence	Bingham, United KingdomHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	OCU Hornbill LTD	Indirect evidence	Neath, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “Hornbill Together.” Source: RevenueBase Database · checked Sep 17, 2026
24	Geologix	Indirect evidence	Norwich, United KingdomHQ checked Sep 17, 2026	11-50	41 contacts →
	Indirect evidence “Geologix has been a leading technology and engineering application development company since 1994, focused on providing innovative and reliable solutions for well monitoring…” Source: RevenueBase Database · checked Sep 17, 2026
25	Core Controls LTD	Partial evidence	Ilkeston, United KingdomHQ checked Sep 17, 2026	11-50	37 contacts →
	Partial evidence “Core Controls, part of Ipsum Group, are pioneers in the integration, control and automation of complex infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: refinery automation system integrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names refinery automation system integrators.
Partial evidence: Its own public description names part of refinery automation system integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery automation system integrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 481 refinery automation system integrators based in the United Kingdom

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Refinery automation system integrators based in the United Kingdom at a glance

As of Sep 17, 2026

40.4%Verified-email coverage

17.5Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

283

11-50

146

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 481 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among refinery automation system integrators, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “refinery automation system integrators”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names refinery automation system integrators), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among refinery automation system integrators, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 3,411 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names refinery automation system integrators, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many refinery automation system integrators are there based in the United Kingdom?

RevenueBase identified 481 refinery automation system integrators headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Proserv, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most refinery automation system integrators?

London leads with 22 headquartered companies, followed by Aberdeen (10) and Sheffield (10).

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 3,411 verified decision-maker contacts tracked across these 481 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.