Company lists · Data refreshed October 2026

Top 25 Cybersecurity professional development software companies based in London, United Kingdom

Name: Cybersecurity professional development software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 310 companies tracked

RevenueBase identified 310 company matches for cybersecurity professional development software companies associated with London, United Kingdom as of October 2026 and tracks 3,909 professional contacts across them, including 579 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for cybersecurity professional development software companies associated with London, 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 October 1, 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 Oct 1, 2026 How this list was built

310Companies

3,909Contacts tracked

579Verified emails

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The 25 largest cybersecurity professional development software companies based in London, United Kingdom

Ranked by team size

Top 25 of 310 company matches for cybersecurity professional development software companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Security Blue Team	Exact match	London, United KingdomHQ recorded Oct 1, 2026	n/a	171 contacts →
	Exact match “Security Blue Team is now Centri.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Conosco	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	105 contacts →
	Exact match “Cybersecurity specialists providing technology and telecoms solutions that gives you the leadership, experience and resilience you need to build and secure the future of work.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Titania LTD	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	88 contacts →
	Exact match “Dedicated to securing the networks society depends on.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Becrypt	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	68 contacts →
	Exact match “With a heritage of creating National Cyber Security Centre certified products, Becrypt, a Leonardo company, is a trusted provider of endpoint cybersecurity software solutions.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Hackviser	Exact match	London, United KingdomHQ recorded Oct 1, 2026	n/a	68 contacts →
	Exact match “Tailored cybersecurity upskilling platform for all levels, catering to beginners and pros.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Techforing	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	61 contacts →
	Exact match “TechForing is a global leader in cybersecurity, dedicated to protecting digital assets and ensuring a safer cyberspace for businesses and individuals.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Riversafe	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	57 contacts →
	Exact match “We deliver services in Cybersecurity, Application Security and DevOps and are trusted by some of the world’s leading brands to maximise the value of their security investments and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Hexegic	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
9	Redscan, A Kroll Business	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	51 contacts →
	Exact match “Redscan is an award-winning provider of managed security services, specialising in Managed Detection and Response, Penetration Testing and Red Teaming.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Trident Search	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	32 contacts →
	Exact match “Your partner in cyber security talent, investment and events.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Torrid Networks Limited	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	32 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Cyber Rescue Alliance	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1-10	29 contacts →
	Exact match “Cyber Rescue is a leading specialist in helping Boardroom Executives to measure, monitor and mitigate potential harm from cyber-attacks.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	J2 Mssp	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	29 contacts →
	Exact match “Cyber security is the modern business' greatest risk.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Encode	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
15	Heptagon Group	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	24 contacts →
	Exact match “At Heptagon Group, we help you manage your organisation from anywhere, anytime, securely.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Toro Solutions	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	23 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	CYPRO	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	21 contacts →
	Exact match “Secure.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Templar Executives	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
19	Secure Purple	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	20 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Consiliumxcel	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	20 contacts →
	Exact match “124 City Road, London EC1V 2NX” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	th4ts3cur1ty.company	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	18 contacts →
	Exact match “th4ts3cur1ty.company supplies cyber security services internationally.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Sinevis	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
23	CST Limited Computer Security Technology	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	17 contacts →
	Exact match “We are a London based specialist supplier of cyber defence solution and information security services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Barefoot Cyber	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	16 contacts →
	Exact match “Barefoot Cyber is the strategic partner for senior leaders who recognize that a cybersecurity attack is not just a technical failure, but a direct threat to their revenue…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Datasixth Consulting	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	15 contacts →
	Exact match “Who We Are DataSixth delivers Cybersecurity Intelligence.” Recorded in the RevenueBase company graph · Oct 1, 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 “cybersecurity professional development software 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 310 cybersecurity professional development software companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 579 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity professional development software companies based in London, United Kingdom at a glance

As of Oct 1, 2026

14.8%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

180

11-50

51-200

201-500

501-1,000

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 310 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 London, United Kingdom whose business descriptions match “cybersecurity professional development software 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 579 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 October 1, 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.

Cybersecurity professional development software companies by metro in the United Kingdom

Cybersecurity professional development software companies in Manchester45

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

How many cybersecurity professional development software companies are there based in London, United Kingdom?

RevenueBase identified 310 company matches for cybersecurity professional development software companies associated with London, United Kingdom as of October 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?

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

Which city in the United Kingdom has the most cybersecurity professional development software companies?

London leads the United Kingdom with 310 company records, followed by Manchester (45) and Birmingham (21).

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 579 professional contacts with verified work emails tracked across these 310 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 October 1, 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.