Company lists · Data refreshed September 2026

Top 25 Utilities cybersecurity companies based in the United Kingdom

Name: Utilities cybersecurity 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 21, 2026 163 companies tracked

RevenueBase identified 163 company matches for utilities cybersecurity companies associated with the United Kingdom as of September 2026 and tracks 4,389 professional contacts across them, including 1,314 with verified work emails. London is the largest hub.

This list covers company matches for utilities cybersecurity 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 21, 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 21, 2026 How this list was built

163Companies

4,389Contacts tracked

1,314Verified emails

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The 25 largest utilities cybersecurity companies based in the United Kingdom

Ranked by team size

Top 25 of 163 company matches for utilities cybersecurity companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Securityhq	Exact match	London, United KingdomHQ recorded Sep 21, 2026	501-1,000	502 contacts →
	Exact match “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Bridewell	Exact match	Reading, United KingdomHQ recorded Sep 21, 2026	201-500	303 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 21, 2026 · View company records in RevenueBase
3	Cyberfort	Exact match	Thatcham, United KingdomHQ recorded Sep 21, 2026	51-200	159 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 21, 2026 · View company records in RevenueBase
4	Performanta	Exact match	Maidenhead, United KingdomHQ recorded Sep 21, 2026	51-200	156 contacts →
	Exact match “Performanta is a global cybersecurity and data risk management company dedicated to protecting people where data matters most.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Khipu Networks	Exact match	Fleet, United KingdomHQ recorded Sep 21, 2026	51-200	125 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 21, 2026 · View company records in RevenueBase
6	ITC Secure	Exact match	London, United KingdomHQ recorded Sep 21, 2026	51-200	87 contacts →
	Exact match “ITC Secure is an advisory-led cyber security services company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Wavenet Cyberguard	Exact match	Stourport-on-severn, United KingdomHQ recorded Sep 21, 2026	201-500	86 contacts →
	Exact match “CyberGuard Technologies is the security division of Wavenet.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Reliance Cyber	Exact match	Waterloo, United KingdomHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
9	Hexegic	Exact match	London, United KingdomHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
10	Adarma Security	Exact match	Edinburgh, United KingdomHQ recorded Sep 21, 2026	201-500	51 contacts →
	Exact match “We are Adarma, independent leaders in detection and response services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Satisnet, A Gamma Company	Exact match	Luton, United KingdomHQ recorded Sep 21, 2026	51-200	45 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 21, 2026 · View company records in RevenueBase
12	Mitigo Group	Exact match	Cheadle, United KingdomHQ recorded Sep 21, 2026	51-200	38 contacts →
	Exact match “Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Secarma LTD	Exact match	Manchester, United KingdomHQ recorded Sep 21, 2026	11-50	36 contacts →
	Exact match “Secarma exists to keep the world safe.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Barrier Networks	Exact match	Glasgow, United KingdomHQ recorded Sep 21, 2026	11-50	34 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 21, 2026 · View company records in RevenueBase
15	defense.com	Exact match	Stevenage, United KingdomHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
16	Intrinsic Security	Exact match	Peterborough, United KingdomHQ recorded Sep 21, 2026	51-200	32 contacts →
	Exact match “Intrinsic Security is a UK-headquartered cybersecurity firm delivering 24/7 threat detection, incident response, and resilience across cloud, hybrid, OT, IoT, and identity…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Procheckup PCU	Exact match	Portsmouth, United KingdomHQ recorded Sep 21, 2026	11-50	29 contacts →
	Exact match “Imagine a world where cyber threats are simply another challenge that you're fully equipped to handle.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Tekgem	Exact match	Sedgefield, United KingdomHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
19	Encode	Exact match	London, United KingdomHQ recorded Sep 21, 2026	51-200	25 contacts →
	Exact match “Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	AMR Cybersecurity	Exact match	Cheltenham, United KingdomHQ recorded Sep 21, 2026	11-50	23 contacts →
	Exact match “AMR CyberSecurity delivers next generation cyber security services to assist organisations across a wide variety of sectors in understanding potential threats and effectively…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Blue Cube Security LTD	Exact match	East Grinstead, United KingdomHQ recorded Sep 21, 2026	11-50	22 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 21, 2026 · View company records in RevenueBase
22	Templar Executives	Exact match	London, United KingdomHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
23	Infosec K2k	Exact match	London, United KingdomHQ recorded Sep 21, 2026	51-200	18 contacts →
	Exact match “Infosec K2K safeguards your organisation’s most valuable assets with tailored cybersecurity solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Sinevis	Exact match	London, United KingdomHQ recorded Sep 21, 2026	11-50	17 contacts →
	Exact match “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	OPTEC	Exact match	Towcester, United KingdomHQ recorded Sep 21, 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 21, 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 “utilities cybersecurity 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 25 of 163 utilities cybersecurity companies based in the United Kingdom

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Utilities cybersecurity companies based in the United Kingdom at a glance

As of Sep 21, 2026

29.9%Verified-email coverage

26.9Average contacts per company

11-50Median size (employees)

45.4%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 163 companies.

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 “utilities cybersecurity 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 1,314 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 21, 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.

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

How many utilities cybersecurity companies are there based in the United Kingdom?

RevenueBase identified 163 company matches for utilities cybersecurity 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?

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

Which city has the most utilities cybersecurity companies?

London leads with 74 company records, followed by Manchester (8) and Bristol (3).

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 1,314 professional contacts with verified work emails tracked across these 163 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 21, 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.