Company lists · Data refreshed September 2026

Top 25 Industrial control system security based in the United Kingdom

Name: Industrial control system security based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 139 companies tracked

RevenueBase identified 139 company matches for industrial control system security associated with the United Kingdom as of September 2026 and tracks 3,349 professional contacts across them, including 1,188 with verified work emails and 315 with mobile numbers. London is the largest hub.

This list covers company matches for industrial control system security associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 3, 2026 How this list was built

139Companies

3,349Contacts tracked

1,188Verified emails

315Mobile numbers

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The 25 largest industrial control system security based in the United Kingdom

Ranked by team size

Top 25 of 139 company matches for industrial control system security based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bridewell	Exact match	Reading, United KingdomHQ recorded Sep 3, 2026	201-500	304 contacts →
	Exact match “Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
2	Sapphire	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Sep 3, 2026	51-200	165 contacts →
	Exact match “Sapphire delivers comprehensive cyber solutions tailored to your needs, spanning across consultancy, managed services, IT/OT and beyond.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
3	Khipu Networks	Exact match	Fleet, United KingdomHQ recorded Sep 3, 2026	51-200	129 contacts →
	Exact match “KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
4	Titania LTD	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	89 contacts →
	Exact match “Dedicated to securing the networks society depends on.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
5	Reliance Cyber	Exact match	Waterloo, United KingdomHQ recorded Sep 3, 2026	51-200	80 contacts →
	Exact match “At Reliance Cyber, we believe in truly partnering with our customers.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
6	Adarma Security	Exact match	Edinburgh, United KingdomHQ recorded Sep 3, 2026	201-500	52 contacts →
	Exact match “We are Adarma, independent leaders in detection and response services.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
7	Omerta	Exact match	Saffron Walden, United KingdomHQ recorded Sep 3, 2026	51-200	38 contacts →
	Exact match “Omerta - A Global Security Technology and Services Company.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
8	Nothreat	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	36 contacts →
	Exact match “The future of IoT/OT security is here.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
9	Cyberis	Exact match	Tewkesbury, United KingdomHQ recorded Sep 3, 2026	11-50	35 contacts →
	Exact match “Cyberis are pioneers in customer-focussed information security.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
10	Barrier Networks	Exact match	Glasgow, United KingdomHQ recorded Sep 3, 2026	11-50	33 contacts →
	Exact match “We are your strategic cybersecurity partner – going beyond traditional models to deliver agile, expert-led protection tailored to the needs of regulated industries and critical…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
11	Servelec Controls	Exact match	Sheffield, United KingdomHQ recorded Sep 3, 2026	51-200	33 contacts →
	Exact match “Servelec Controls develops and integrates bespoke mission-critical systems for national infrastructure by bringing together specialist hardware, software and world-class…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
12	defense.com	Exact match	Stevenage, United KingdomHQ recorded Sep 3, 2026	51-200	32 contacts →
	Exact match “Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
13	Tekgem	Exact match	Sedgefield, United KingdomHQ recorded Sep 3, 2026	11-50	26 contacts →
	Exact match “Tekgem bridges the gap between Information Technology (IT) and Operational Technology (OT).” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
14	Blue Cube Security LTD	Exact match	East Grinstead, United KingdomHQ recorded Sep 3, 2026	11-50	23 contacts →
	Exact match “Blue Cube Security is a trusted UK cyber security partner with over 25 years of experience helping organisations stay secure in an increasingly complex digital world.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
15	Sword Iacs	Exact match	Aberdeen, United KingdomHQ recorded Sep 3, 2026	11-50	22 contacts →
	Exact match “IACS Consulting are an Aberdeen based Industrial Automation Control System consultancy that specialises exclusively in cyber security for the production and safety critical…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
16	Templar Executives	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	21 contacts →
	Exact match “Templar Executives is an award winning, international Cyber Security advisory services and solutions company operating at the highest levels across the public and private sectors.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
17	Cyber Energia	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	20 contacts →
	Exact match “Cyber Energia – Your Comprehensive Cyber Security Solution for a smart & sustainable energy market Cyber Energia is a dynamic managed security service provider offering OT / SCADA…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
18	Clearswift	Exact match	Berkshire, United KingdomHQ recorded Sep 3, 2026	201-500	19 contacts →
	Exact match “Why Clearswift?” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
19	Infosec K2k	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	17 contacts →
	Exact match “Infosec K2K safeguards your organisation’s most valuable assets with tailored cybersecurity solutions.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
20	CST Limited Computer Security Technology	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	17 contacts →
	Exact match “We are a London based specialist supplier of cyber defence solution and information security services.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
21	Cyberhive	Exact match	Newbury, United KingdomHQ recorded Sep 3, 2026	11-50	16 contacts →
	Exact match “CyberHive protects the most valued organisations, their people data, and assets, with patented technology that is simple, secure and performant.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
22	OPTEC	Exact match	Towcester, United KingdomHQ recorded Sep 3, 2026	1-10	16 contacts →
	Exact match “We specialise in delivering end-to-end cybersecurity solutions and services designed to proactively protect your business.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
23	Deltaflare	Exact match	London, United KingdomHQ recorded Sep 3, 2026	11-50	15 contacts →
	Exact match “deltaflare is a technology company rooted in the Critical National Infrastructure.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
24	Datasixth Consulting	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	14 contacts →
	Exact match “Who We Are DataSixth delivers Cybersecurity Intelligence.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
25	Xpertex LTD	Exact match	Welwyn Garden City, United KingdomHQ recorded Sep 3, 2026	11-50	13 contacts →
	Exact match “Xpertex has been at the cutting edge of cyber security development since 2006.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “industrial control system security”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 139 industrial control system security based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,188 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial control system security based in the United Kingdom at a glance

As of Sep 3, 2026

35.5%Verified-email coverage

9.4%Mobile-number coverage

24.1Average contacts per company

11-50Median size (employees)

39.6%Largest-city concentration · London

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

11631–60

68861–90

37590–180

9180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United Kingdom whose business descriptions match “industrial control system security” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,188 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Industrial control system security by metro

Industrial control system security in London55

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “industrial control system security”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial control system security are there based in the United Kingdom?

RevenueBase identified 139 company matches for industrial control system security associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Bridewell tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most industrial control system security?

London leads with 55 company records, followed by Manchester (6) and Oxford (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,188 professional contacts with verified work emails tracked across these 139 companies; direct dials are available where recorded.

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.