Company lists · Data refreshed October 2026

Top 25 Application security posture management software companies based in the United Kingdom

RevenueBase identified 236 company matches for application security posture management software companies associated with the United Kingdom as of October 2026 and tracks 2,537 professional contacts across them, including 946 with verified work emails. London is the largest hub.

This list covers company matches for application security posture management 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
236Companies
2,537Contacts tracked
946Verified emails
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The 25 largest application security posture management software companies based in the United Kingdom

Ranked by team size
Top 25 of 236 company matches for application security posture management 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKnutsford, United KingdomHQ recorded Oct 1, 202651-200267 contacts →

Exact match

“PortSwigger is a global leader in the creation of software tools for security testing of web applications.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-200209 contacts →

Exact match

“Ethixbase360 delivers market-leading technology to help companies identify, manage, and mitigate risks in their third-party network.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchLeeds, United KingdomHQ recorded Oct 1, 202651-20099 contacts →

Exact match

“AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20088 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
5Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20061 contacts →

Exact match

“Intruder's continuous exposure management platform helps security, IT, and engineering teams stop breaches before they start.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20057 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5057 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
8Exact matchCheltenham, United KingdomHQ recorded Oct 1, 202651-20042 contacts →

Exact match

“CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchMarlow, United KingdomHQ recorded Oct 1, 202611-5039 contacts →

Exact match

“DWS is a global enterprise software services company delivering development, testing, and software supply chain security solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchManchester, United KingdomHQ recorded Oct 1, 202611-5036 contacts →

Exact match

“Secarma exists to keep the world safe.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5036 contacts →

Exact match

“RedHunt Labs is a research-driven cybersecurity company delivering Continuous Threat Exposure Management (CTEM), PTaaS, and AI Exposure Security.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchCambridge, United KingdomHQ recorded Oct 1, 202611-5034 contacts →

Exact match

“Pentesting Exams by Pentesting Experts.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchStevenage, United KingdomHQ recorded Oct 1, 202651-20032 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 · Oct 1, 2026 · View company records in RevenueBase
14Exact matchBirmingham, United KingdomHQ recorded Oct 1, 202611-5032 contacts →

Exact match

“Aristi is a specialist provider of cyber security services with over 17 years of experience.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-1030 contacts →

Exact match

“SnapSec is a cybersecurity company specializing in centralized application security operations.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchPortsmouth, United KingdomHQ recorded Oct 1, 202611-5029 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 · Oct 1, 2026 · View company records in RevenueBase
17Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5024 contacts →

Exact match

“Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20024 contacts →

Exact match

“SSL247 (A Sectigo Company) has nearly 20 years of security consulting experience operating in 18 different markets globally.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“Halo I.S is not just another cybersecurity organization based in the UK; we're a testament to evolution and client-centric innovation.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchCheltenham, United KingdomHQ recorded Oct 1, 202611-5018 contacts →

Exact match

“Hexiosec is the new name for Red Maple Technologies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchEdinburgh, United KingdomHQ recorded Oct 1, 202611-5018 contacts →

Exact match

“Trustify is a Cybersecurity software vendor based in Edinburgh, Scotland.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-1017 contacts →

Exact match

“Cyber Security Assessment, Score Carding, Benchmarking, and Risk Management Platform.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5016 contacts →

Exact match

“Protect your sensitive corporate information against the risks from mobile devices and social media exposure.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-1016 contacts →

Exact match

“VulnHero is an AI-driven continuous full-stack offensive security platform that helps teams see what scanners miss and focus on exploitable risk first.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchAbingdon, United KingdomHQ recorded Oct 1, 202611-5015 contacts →

Exact match

“Bringing the world #PositiveSecurity to build a safer, more secure world where more things go right.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 236 application security posture management software companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 946 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Application security posture management software companies based in the United Kingdom at a glance

As of Oct 1, 2026
37.3%Verified-email coverage
10.8Average contacts per company
1-10Median size (employees)
41.9%Largest-city concentration · London
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
136
11-50
75
51-200
19
201-500
3
501-1,000
2
5,001-10,000
1

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 236 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 “application security posture management 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 946 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.

Application security posture management 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 “application security posture management software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many application security posture management software companies are there based in the United Kingdom?

RevenueBase identified 236 company matches for application security posture management 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?

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

Which city has the most application security posture management software companies?

London leads with 99 company records, followed by Manchester (13) and Leeds (7).

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 946 professional contacts with verified work emails tracked across these 236 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.