Company lists · Data refreshed September 2026

Top 24 Ics security companies based in the United Kingdom

Name: Ics security companies 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 634 companies tracked

RevenueBase identified 634 company matches for ics security companies associated with the United Kingdom as of September 2026 and tracks 13,375 professional contacts across them, including 5,060 with verified work emails and 1,731 with mobile numbers. London is the largest hub.

This list covers company matches for ics security companies 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

634Companies

13,375Contacts tracked

5,060Verified emails

1,731Mobile numbers

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The 24 largest ics security companies based in the United Kingdom

Ranked by team size

Top 24 of 634 company matches for ics security companies 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	Sophos	Exact match	Abingdon, United KingdomHQ recorded Sep 3, 2026	5,001-10,000	4,963 contacts →
	Exact match “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
2	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
3	Openview Security Solutions Limited	Exact match	Romford, United KingdomHQ recorded Sep 3, 2026	201-500	200 contacts →
	Exact match “OpenView Security Solutions is the UK’S largest privately owned independent security company and provides unique, innovative and technologically excellent solutions to meet…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
4	Exclusive Networks UK	Exact match	Alton, United KingdomHQ recorded Sep 3, 2026	201-500	168 contacts →
	Exact match “Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
5	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
6	Elite Security Group	Exact match	Swindon, United KingdomHQ recorded Sep 3, 2026	51-200	161 contacts →
	Exact match “One of the largest independent security companies in the UK.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
7	Cyberfort	Exact match	Thatcham, United KingdomHQ recorded Sep 3, 2026	51-200	160 contacts →
	Exact match “At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
8	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
9	Bulletproof Cyber Security	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	118 contacts →
	Exact match “Bulletproof is now part of WorkNest Secure.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
10	ITC Secure	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	87 contacts →
	Exact match “ITC Secure is an advisory-led cyber security services company.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
11	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
12	ABEL	Exact match	Leicester, United KingdomHQ recorded Sep 3, 2026	51-200	69 contacts →
	Exact match “With over 50 years’ experience in the security industry, Abel has grown to become one of the UK’s largest privately owned providers of electronic security systems.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
13	CSA Cyber	Exact match	Gloucester, United KingdomHQ recorded Sep 3, 2026	51-200	68 contacts →
	Exact match “Modern cyber resilience demands more than isolated controls.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
14	Cyro Cyber	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	63 contacts →
	Exact match “Cyro Cyber are your cyber security Guardians.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
15	Cyberlab	Exact match	Alderley Edge, United KingdomHQ recorded Sep 3, 2026	51-200	56 contacts →
	Exact match “CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
16	Hexegic	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	52 contacts →
	Exact match “At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
17	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
18	Custom Intelligent Security	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	51 contacts →
	Exact match “Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
19	Satisnet, A Gamma Company	Exact match	Luton, United KingdomHQ recorded Sep 3, 2026	51-200	46 contacts →
	Exact match “Established in 2004 (acquired by Gamma in 2023), Satisnet, a Gamma company is a pedigree-proven cyber security services and solutions specialist with a fully UK-based 24x7x365 SOC.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
20	Mitigo Group	Exact match	Cheadle, United KingdomHQ recorded Sep 3, 2026	51-200	42 contacts →
	Exact match “Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
21	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
22	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
23	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
24	Jumpsec	Exact match	London, United KingdomHQ recorded Sep 3, 2026	51-200	35 contacts →
	Exact match “Adaptive Cyber Security JUMPSEC operates on a core principle: real attack insight drives stronger defence.” 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 “ics security companies”. 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 24 of 634 ics security companies based in the United Kingdom

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Ics security companies based in the United Kingdom at a glance

As of Sep 3, 2026

37.8%Verified-email coverage

12.9%Mobile-number coverage

21.1Average contacts per company

1-10Median size (employees)

31.5%Largest-city concentration · London

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

330

11-50

211

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

42231–60

2,93061–90

1,61590–180

93180+

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 “ics security companies” 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 5,060 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.

Ics security companies by metro

Ics security companies in London200

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 “ics security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ics security companies are there based in the United Kingdom?

RevenueBase identified 634 company matches for ics security companies 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?

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

Which city has the most ics security companies?

London leads with 200 company records, followed by Manchester (23) and Birmingham (14).

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 5,060 professional contacts with verified work emails tracked across these 634 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.