Company lists · Data refreshed September 2026

Top 24 Cyber security services for utilities based in London, United Kingdom

Name: Cyber security services for utilities based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 88 companies tracked

RevenueBase identified 88 cyber security services for utilities headquartered in London, United Kingdom as of September 2026 and tracks 2,528 professional contacts across them, including 273 with verified work emails and 527 with mobile numbers. London is the largest hub.

This list covers cyber security services for utilities headquartered in London, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 10, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 10, 2026 86% judged on-target in blind review

88Companies

2,528Contacts tracked

273Verified emails

527Mobile numbers

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The 24 largest cyber security services for utilities based in London, United Kingdom

Ranked by team size

Top 24 of 88 cyber security services for utilities based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to cyber security services for utilities: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ITC Secure	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	87 contacts →
	Strong evidence “ITC Secure is an advisory-led cyber security services company.” Source: RevenueBase Database · checked Sep 10, 2026
2	Cyberowl	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	52 contacts →
	Strong evidence “CyberOwl helps asset operators in the maritime and critical national infrastructure sectors gain visibility, cyber security and cyber compliance of systems on their distributed…” Source: RevenueBase Database · checked Sep 10, 2026
3	Hexegic	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	52 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 10, 2026
4	Torrid Networks Limited	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	32 contacts →
	Strong evidence “Founded in 2006, Torrid Networks has been able to establish strong credentials in the area of cyber security products, research, consulting, managed services, education and staff…” Source: RevenueBase Database · checked Sep 10, 2026
5	Encode	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	25 contacts →
	Strong evidence “Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Source: RevenueBase Database · checked Sep 10, 2026
6	Templar Executives	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	21 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 10, 2026
7	Cyber Energia	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	20 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 10, 2026
8	th4ts3cur1ty.company	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	18 contacts →
	Strong evidence “th4ts3cur1ty.company supplies cyber security services internationally.” Source: RevenueBase Database · checked Sep 10, 2026
9	Infosec K2k	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	18 contacts →
	Indirect evidence “Infosec K2K safeguards your organisation’s most valuable assets with tailored cybersecurity solutions.” Source: RevenueBase Database · checked Sep 10, 2026
10	Sinevis	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	17 contacts →
	Indirect evidence “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Source: RevenueBase Database · checked Sep 10, 2026
11	CST Limited Computer Security Technology	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	17 contacts →
	Strong evidence “We are a London based specialist supplier of cyber defence solution and information security services.” Source: RevenueBase Database · checked Sep 10, 2026
12	Datasixth Consulting	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	15 contacts →
	Indirect evidence “Who We Are DataSixth delivers Cybersecurity Intelligence.” Source: RevenueBase Database · checked Sep 10, 2026
13	Goallsecure	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	13 contacts →
	Partial evidence “In today’s world, cyber threats are complex and multilayered, so complete protection is not achievable through a single solution or product, that's why GoAllSecure provides a 360°…” Source: RevenueBase Database · checked Sep 10, 2026
14	Socguardians LTD	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	13 contacts →
	Indirect evidence “Our mission at SOCGuardians is to empower organizations to operate confidently in a digital world by providing cutting-edge cybersecurity services.” Source: RevenueBase Database · checked Sep 10, 2026
15	Cyber Armed Security	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	12 contacts →
	Strong evidence “At Cyber Armed Security, we protect organisations worldwide from evolving cyber threats through intelligence-driven ethical hacking.” Source: RevenueBase Database · checked Sep 10, 2026
16	Disclosure Cybersecurity	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	11 contacts →
	Strong evidence “Disclosure Cybersecurity Ltd is a specialist cyber security company, formed by professionals with extensive experience and wide exposure in the cyber security market.” Source: RevenueBase Database · checked Sep 10, 2026
17	Otifyd	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	11 contacts →
	Indirect evidence “We are a next-gen Operational Technology (OT) cybersecurity leader focused on safeguarding industrial environments so that we can fulfil our purpose: Provide best-in-class OT…” Source: RevenueBase Database · checked Sep 10, 2026
18	Defenx	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	10 contacts →
	Partial evidence “Defenx is an IT company that has an extensive background in providing businesses with cloud based security solutions and support for their digital infrastructure.” Source: RevenueBase Database · checked Sep 10, 2026
19	Icyberdefence	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	8 contacts →
	Partial evidence “iCyberDefence is a boutique cybersecurity services firm that offers a wide range of security consulting and security engineering services with the necessary products and tools.” Source: RevenueBase Database · checked Sep 10, 2026
20	Threat Protect	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	7 contacts →
	Indirect evidence “Threat Protect is a vendor-agnostic cybersecurity, compliance and AI governance partner based in London, working with organisations across finance, legal, energy, pharma…” Source: RevenueBase Database · checked Sep 10, 2026
21	Grove Group	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	3 contacts →
	Indirect evidence “Grove unlocks business success by defending our customers with the most advanced cybersecurity solutions in the market place today.” Source: RevenueBase Database · checked Sep 10, 2026
22	Illume	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	3 contacts →
	Strong evidence “Illume are a UK-based cyber security specialist helping organisations identify risk, stop threats, and stay secure.” Source: RevenueBase Database · checked Sep 10, 2026
23	Cybersecure365	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	3 contacts →
	Strong evidence “CyberSecure365™ offers an enterprising new approach to your company’s cyber security.” Source: RevenueBase Database · checked Sep 10, 2026
24	Pbosecure Trading AS Cybersys Technologies Ltd. In UK	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	3 contacts →
	Indirect evidence “PBOSECURE (Trading as CYBERSYS TECHNOLOGIES)** is a UK-based industrial solutions company specialising in Vapor Recovery Units (VRU), emission reduction technologies, and energy…” Source: RevenueBase Database · checked Sep 10, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cyber security services for utilities. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cyber security services for utilities.
Partial evidence: Its own public description names part of cyber security services for utilities, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cyber security services for utilities. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 88 cyber security services for utilities based in London, United Kingdom

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Cyber security services for utilities based in London, United Kingdom at a glance

As of Sep 10, 2026

10.8%Verified-email coverage

20.8%Mobile-number coverage

28.7Average contacts per company

11-50Median size (employees)

111.4%Largest-city concentration · London

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 13.0d

2560–30

1731–60

061–90

090–180

0180+

Company record updated

Median 73.0d

00–30

85131–60

1,27561–90

29390–180

109180+

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 cyber security services for utilities, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “cyber security services for utilities”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cyber security services for utilities), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cyber security services for utilities, and records with no verified work email. Companies headquartered outside London 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 its RevenueBase Smart Search 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, 273 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 10, 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.

Cyber security services for utilities by metro in the United Kingdom

Cyber security services for utilities in London98

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cyber security services for utilities, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cyber security services for utilities are there based in London, United Kingdom?

RevenueBase identified 88 cyber security services for utilities headquartered in London, 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?

ITC Secure, headquartered in London, tops this list with the largest team on record.

Which city has the most cyber security services for utilities?

London leads with 98 headquartered companies, followed by Manchester (10) and Birmingham (4).

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 273 verified decision-maker contacts tracked across these 88 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 10, 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 Smart Search, 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.