Company lists · Data refreshed September 2026

Top 25 Cybersecurity training centers based in London, United Kingdom

Name: Cybersecurity training centers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 127 companies tracked

RevenueBase identified 127 cybersecurity training centers headquartered in London, United Kingdom as of September 2026 and tracks 2,287 professional contacts across them, including 237 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers cybersecurity training centers 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 28, 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 28, 2026 86% judged on-target in blind review

127Companies

2,287Contacts tracked

237Verified emails

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The 25 largest cybersecurity training centers based in London, United Kingdom

Ranked by team size

Top 25 of 127 cybersecurity training centers based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity training centers: 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	Security Blue Team	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	171 contacts →
	Indirect evidence “Security Blue Team is now Centri.” Source: RevenueBase Database · checked Sep 28, 2026
2	Cybersmart	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Partial evidence “Cybersecurity should be simple.” Source: RevenueBase Database · checked Sep 28, 2026
3	Hackviser	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	68 contacts →
	Partial evidence “Tailored cybersecurity upskilling platform for all levels, catering to beginners and pros.” Source: RevenueBase Database · checked Sep 28, 2026
4	Chartered Institute Of Information Security	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “The Chartered Institute of Information Security (CIISec) is the only pure-play information security institution to have been granted Royal Charter status and is dedicated to…” Source: RevenueBase Database · checked Sep 28, 2026
5	Notsosecure Training Part Of Claranet Cyber Security	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	33 contacts →
	Partial evidence “NotSoSecure Training, part of Claranet Cyber Security.” Source: RevenueBase Database · checked Sep 28, 2026
6	Torrid Networks Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect 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 28, 2026
7	DCD Academy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “DCD Academy is the data center industry’s premier workforce development partner.” Source: RevenueBase Database · checked Sep 28, 2026
8	Ipspecialist	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Welcome to IPSpecialist, your trusted e-learning partner for Cloud, Cyber Security, and Networking domains.” Source: RevenueBase Database · checked Sep 28, 2026
9	Toro Solutions	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Toro was founded on creating the UK's first Red Team penetration test - and then attacking hundreds of clients by hacking their systems, influencing / social engineering staff and…” Source: RevenueBase Database · checked Sep 28, 2026
10	Templar Executives	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect 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 28, 2026
11	Secure Purple	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Source: RevenueBase Database · checked Sep 28, 2026
12	Cyber Management Alliance Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Founded in 2015 and headquartered in London UK, Cyber Management Alliance Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
13	Tranchulas	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Founded in 2006, Tranchulas is a multinational cyber security company having its offices in London, San Francisco, Budapest and Islamabad.” Source: RevenueBase Database · checked Sep 28, 2026
14	Smartlearning UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “We are IT security experts, providing job-ready online training through hands-on and project-based learning” Source: RevenueBase Database · checked Sep 28, 2026
15	Hacker Academy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	15 contacts →
	Partial evidence “We Help Your Company Culture to Have a Successful Cybersecurity Posture.” Source: RevenueBase Database · checked Sep 28, 2026
16	Socguardians LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial 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 28, 2026
17	Cyber Resilience Centre For London	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “The Cyber Resilience Centre for London was launched in October 2022 to help SMEs and third sector organisations reduce their vulnerability to common cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
18	Doubleflow	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Doubleflow turns cybersecurity topics into games, escape rooms, and live experiences, tailored to your industry, built to drive real behavior change.” Source: RevenueBase Database · checked Sep 28, 2026
19	Goldphish	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Protect your organisation from cyber threats with Goldphish - the leading web-based security awareness training platform.” Source: RevenueBase Database · checked Sep 28, 2026
20	Loopli	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Have a more relaxing and less stressful Christmas, start today to become Cyber Essentials Certified in time for Christmas.” Source: RevenueBase Database · checked Sep 28, 2026
21	Meta Defence Labs LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “As a distinguished UK National Cyber Security Center (NCSC) Assured Services Provider and an authorised certification body for esteemed credentials such as Cyber Essentials, Cyber…” Source: RevenueBase Database · checked Sep 28, 2026
22	Cybersync HUB	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “At CyberSync Hub we believe cybersecurity is more than technology.” Source: RevenueBase Database · checked Sep 28, 2026
23	Lab539	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “It is often said that an adversary needs to get lucky only once, yet a defender must be lucky every time.” Source: RevenueBase Database · checked Sep 28, 2026
24	Grove Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	3 contacts →
	Partial 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 28, 2026
25	Cyber Helmets	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	3 contacts →
	Strong evidence “Building cybersecurity proficiency through effective, expert-led, hands-on, and custom-built training to deliver real impact where it matters most: At Cyber Helmets, we believe…” Source: RevenueBase Database · checked Sep 28, 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: cybersecurity training centers. 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 cybersecurity training centers.
Partial evidence: Its own public description names part of cybersecurity training centers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity training centers. 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 25 of 127 cybersecurity training centers based in London, United Kingdom

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Cybersecurity training centers based in London, United Kingdom at a glance

As of Sep 28, 2026

10.4%Verified-email coverage

18.0Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 127 companies.

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 cybersecurity training centers, 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 “cybersecurity training centers”. 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 cybersecurity training centers), 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 cybersecurity training centers, 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, 237 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 28, 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.

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 cybersecurity training centers, 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 cybersecurity training centers are there based in London, United Kingdom?

RevenueBase identified 127 cybersecurity training centers 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?

Security Blue Team, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most cybersecurity training centers?

London leads the United Kingdom with 127 headquartered companies, followed by Manchester (18) and Birmingham (8).

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 237 verified decision-maker contacts tracked across these 127 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 28, 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.