Company lists · Data refreshed September 2026
Top 25 Industrial automation security vendors based in the United Kingdom
RevenueBase identified 94 industrial automation security vendors headquartered in the United Kingdom as of September 2026 and tracks 2,004 professional contacts across them, including 508 with verified work emails and 197 with mobile numbers. London is the largest hub.
This list covers industrial automation security vendors 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest industrial automation security vendors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 173 | ||||
“Looking after the things people care about, wherever they are’.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 96 | ||||
“We are committed to developing solutions and services that secure and connect the increasingly complex digital landscape.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 72 | ||||
“CAME is a leading multinational company, providing integrated technology solutions for automating residential, public and urban environments that creates smart spaces to improve…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | Remsdaq LTDIndirect evidence | 39 | |||
“Remsdaq Ltd, is a UK-based hardware and software system engineering company supplying off-the-shelf and turnkey solutions for SCADA (sub-station EHV/HV/MV/LV monitoring)…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 36 | ||||
“The future of IoT/OT security is here.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 26 | ||||
“Tekgem bridges the gap between Information Technology (IT) and Operational Technology (OT).” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 | ||||
“We are product and solution specialists and have extensive application knowledge of our product portfolio.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 22 | ||||
“part of the Obsequio Group At Brunel, we provide advanced security and life protection solutions, ensuring that your business and assets are safeguarded with the highest standards…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 | ||||
“Riverside Automation Limited is a highly respected organisation providing solutions in industrial automation and control.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 | ||||
“deltaflare is a technology company rooted in the Critical National Infrastructure.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | Signum IntelligencePartial evidence | 15 | |||
“Signum Intelligence is a leading UK based solutions provider in the security, information, and telecommunications sector.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | Silki LTDPartial evidence | 13 | |||
“Silki LTD is an industry leading provider of cutting edge automation solutions that merge electromechanical engineering, advanced software development and AI driven analytics.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 | ||||
“The Security Group delivers state-of-the-art security solutions to protect businesses, assets, and people.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | Castle SecurityPartial evidence | 11 | |||
“Castle was a brand and is now a part of Pyronix Ltd, a UK based designer and manufacturer of high technology control equipment and intruder alarms to the global security industry.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | Pinnacle SystemsPartial evidence | 10 | |||
“Pinnacle is a CPIM (Centralised Plaform for Integration & Monitoring)- a vendor-agnostic integration platform designed to centralise and unify security and other building…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | Sword Services LTDStrong evidence | 10 | |||
“Sword Services was founded in 1990 by Lawrence Sword and has established itself as a major player in the field of industrial electronic security solutions and gained a reputation…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Swidch LTDPartial evidence | 10 | |||
“swIDch stops OT attacks at the access layer by securing the most vulnerable endpoints in critical infrastructure.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 | ||||
“Securing What Matters.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 9 | ||||
“Community of Azure users.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | Honeywel LimitedIndirect evidence | 9 | |||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | Netaccess LTDIndirect evidence | 8 | |||
“Design Philosophy The netaccess core design philosophy has always been to develop systems that support customer processes, ensure our products work for the user and reduce, as far…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 | ||||
“Advancis has been successfully active on the market as an independent software house for over 25 years.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | Perimeter AutomationStrong evidence | 8 | |||
“Perimeter Solutions Automation provide Automation, Access Control and Security Systems to both the residential and commercial marketplace, including construction sites.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 | ||||
“Since Y3K has been at the forefront of technological advancements, propelling innovation forward.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 | ||||
“MYDIS is a UK-based security and software firm reimagining how physical and digital systems work together to protect, optimise, and empower high-risk environments.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 94 industrial automation security vendors based in the United Kingdom
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Industrial automation security vendors based in the United Kingdom at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 industrial automation security vendors, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “industrial automation security vendors”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among industrial automation security vendors, 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 an evidence 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, 508 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 3, 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
How many industrial automation security vendors are there based in the United Kingdom?
RevenueBase identified 94 industrial automation security vendors 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?
Texecom LTD, headquartered in Haslingden, tops this list with the largest team on record.
Which city has the most industrial automation security vendors?
London leads with 15 headquartered companies, followed by Belfast (3) and Leeds (3).
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 508 verified decision-maker contacts tracked across these 94 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 3, 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 SmartSearch, 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.
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