Company lists · Data refreshed October 2026

Top 25 Cybersecurity professional development software companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 839 companies tracked

RevenueBase identified 839 company matches for cybersecurity professional development software companies associated with the United Kingdom as of October 2026 and tracks 15,578 professional contacts across them, including 5,337 with verified work emails. London is the largest hub.

This list covers company matches for cybersecurity professional development software 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 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

839Companies

15,578Contacts tracked

5,337Verified emails

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

Ranked by team size

Top 25 of 839 company matches for cybersecurity professional development software companies based in the 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	Sophos	Exact match	Abingdon, United KingdomHQ recorded Oct 1, 2026	5,001-10,000	4,925 contacts →
	Exact match “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Hack The BOX	Exact match	Folkestone, United KingdomHQ recorded Oct 1, 2026	n/a	1,975 contacts →
	Exact match “Hack The Box is the leading AI-powered cybersecurity readiness and upskilling platform, trusted by 1,500+ organizations worldwide, including Fortune 500 enterprises, government…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Securityhq	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
4	Capslock	Exact match	Manchester, United KingdomHQ recorded Oct 1, 2026	n/a	227 contacts →
	Exact match “At CAPSLOCK, we’re redefining how adults transition into cyber security.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	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
6	Cyberfort	Exact match	Thatcham, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
7	Performanta	Exact match	Maidenhead, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
8	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
9	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
10	Wavenet Cyberguard	Exact match	Stourport-on-severn, United KingdomHQ recorded Oct 1, 2026	201-500	86 contacts →
	Exact match “CyberGuard Technologies is the security division of Wavenet.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Amethyst Risk Management	Exact match	Basingstoke, United KingdomHQ recorded Oct 1, 2026	11-50	85 contacts →
	Exact match “Amethyst Risk Management is a leading cybersecurity consultancy supplying expert services and support to the UK Government, Defence, Operators of Essential Services, and the…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Reliance Cyber	Exact match	Waterloo, United KingdomHQ recorded Oct 1, 2026	51-200	80 contacts →
	Exact match “At Reliance Cyber, we believe in truly partnering with our customers.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Virtual IT LTD	Exact match	South & West Hampstead, United KingdomHQ recorded Oct 1, 2026	51-200	79 contacts →
	Exact match “Virtual IT are a leading provider of cyber-secure cloud and managed IT services in the UK, entrusted by over 700 businesses and schools as their end-to-end technology partner.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Saepio Information Security	Exact match	High Wycombe, United KingdomHQ recorded Oct 1, 2026	51-200	74 contacts →
	Exact match “Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	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
16	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
17	Interrupt Labs	Exact match	Basingstoke, United KingdomHQ recorded Oct 1, 2026	51-200	65 contacts →
	Exact match “We’re here to provide world-leading vulnerability research and capabilities!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Digitalxraid	Exact match	Doncaster, United KingdomHQ recorded Oct 1, 2026	51-200	62 contacts →
	Exact match “At DigitalXRAID, we’re more than just a managed security services provider – we’re your trusted partner in safeguarding your business from cyber threats.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	MDSEC	Exact match	Macclesfield, United KingdomHQ recorded Oct 1, 2026	11-50	61 contacts →
	Exact match “MDSec are a UK based consultancy with a passion for information security.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	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
21	Cyberlab	Exact match	Alderley Edge, United KingdomHQ recorded Oct 1, 2026	51-200	57 contacts →
	Exact match “CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	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
23	Zhero Cybersecurity & IT Support	Exact match	162 Farringdon Rd, United KingdomHQ recorded Oct 1, 2026	11-50	55 contacts →
	Exact match “Zhero provides end-to-end business cybersecurity and IT support to a range of industries.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Sans Emea	Exact match	Swansea, United KingdomHQ recorded Oct 1, 2026	201-500	54 contacts →
	Exact match “SANS is the world's largest and most trusted provider of cyber security training.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	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

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 839 cybersecurity professional development software companies based in the United Kingdom

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

As of Oct 1, 2026

34.3%Verified-email coverage

18.6Average contacts per company

1-10Median size (employees)

36.9%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

514

11-50

249

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 839 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 “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 5,337 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

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 the United Kingdom?

RevenueBase identified 839 company matches for cybersecurity professional development software companies associated with the 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?

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

Which city has the most cybersecurity professional development software companies?

London leads 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 5,337 professional contacts with verified work emails tracked across these 839 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.