Company lists · Data verified August 2026

Top 25 Cybersecurity for industrial systems based in the United Kingdom

Name: Cybersecurity for industrial systems 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 298 companies tracked

There are 298 cybersecurity for industrial systems headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 5,599 professional contacts across them, including 1,555 with verified work emails and 709 with mobile numbers. London is the largest hub.

This list covers cybersecurity for industrial systems 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.

298Companies

5,599Contacts tracked

1,555Verified emails

709Mobile numbers

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The 25 largest cybersecurity for industrial systems based in the United Kingdom

Ranked by team size

Top 25 of 298 cybersecurity for industrial systems 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	SISA	Leicester	201-500	739	253
2	Everfox	London	1,001-5,000	635	13
3	Bridewell	Edinburgh	201-500	304	189
4	Sapphire	Newcastle Upon Tyne	51-200	165	59
5	Cyberfort	Thatcham	51-200	160	88
6	Cybersec Consulting	London	201-500	141	76
7	Khipu Networks	Fleet	51-200	129	94
8	Foresite Cybersecurity	Farnborough	51-200	100	67
9	ITC Secure	London	51-200	87	39
10	Reliance Cyber	Waterloo	51-200	80	47
11	Hexegic	London	51-200	52	30
12	Adarma Security	Edinburgh	201-500	52	23
13	Satisnet, A Gamma Company	Luton	51-200	46	8
14	Mitigo Group	Cheadle	51-200	42	18
15	Omerta	Saffron Walden	51-200	38	15
16	Secarma LTD	Manchester	11-50	34	23
17	Barrier Networks	London	11-50	33	22
18	defense.com	Stevenage	51-200	32	13
19	Aristi	Birmingham	11-50	32	10
20	Procheckup PCU	Portsmouth	11-50	30	18
21	Converged Communication Solutions	Aberdeen	11-50	29	24
22	J2 Mssp	London	11-50	27	2
23	Tekgem	Sedgefield	11-50	26	10
24	Blackfoot Cybersecurity	Welwyn Garden City	11-50	23	13
25	Templar Executives	London	51-200	21	10

Showing 25 of 298 cybersecurity for industrial systems based in the United Kingdom

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Cybersecurity for industrial systems based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 123 HQs

709Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

160

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity for industrial systems by metro

Metro	Companies
Cybersecurity for industrial systems in London	123
Cybersecurity for industrial systems in Manchester	12
Cybersecurity for industrial systems in Birmingham	6
Cybersecurity for industrial systems in Bristol	5
Cybersecurity for industrial systems in Oxford	5
Cybersecurity for industrial systems in Cambridge	4
Cybersecurity for industrial systems in Milton Keynes	4

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 “cybersecurity for industrial systems”, 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; 3 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 cybersecurity for industrial systems are there based in the United Kingdom?

There are 298 cybersecurity for industrial systems headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

SISA, headquartered in Leicester, tops this list with the largest team on record.

Which city has the most cybersecurity for industrial systems?

London leads with 123 headquartered companies, followed by Manchester (12) and Birmingham (6).

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 1,555 verified decision-maker contacts tracked across these 298 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.