Company lists · Data refreshed October 2026

Top 21 Mobile application security testing software companies based in the United Kingdom

RevenueBase identified 53 company matches for mobile application security testing software companies associated with the United Kingdom as of October 2026 and tracks 780 professional contacts across them, including 204 with verified work emails. London is the largest hub.

This list covers company matches for mobile application security testing 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 19, 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 19, 2026 How this list was built
53Companies
780Contacts tracked
204Verified emails
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The 21 largest mobile application security testing software companies based in the United Kingdom

Ranked by team size
Top 21 of 53 company matches for mobile application security testing software companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 19, 202651-200281 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 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Oct 19, 202651-20063 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchWirral, United KingdomHQ recorded Oct 19, 202651-20037 contacts →

Exact match

“For more than 45 years, LDRA has developed and driven the market for software that automates code analysis and software testing for safety, mission, security- and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“is an,/, – ()- delivering structured External Vulnerability Assessment & Penetration Testing (VAPT) with Black Box methodologies for SaaS platforms, web applications, APIs, and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchManchester, United KingdomHQ recorded Oct 19, 202611-5014 contacts →

Exact match

“Cytix is the security decision layer for a world where software development never stops.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchBath, United KingdomHQ recorded Oct 19, 202611-5013 contacts →

Exact match

“At Mobius Binary we care about your reputation and the loss that could result from violating your digital boundaries.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchCranfield, United KingdomHQ recorded Oct 19, 202611-507 contacts →

Exact match

“Secure Debug: Your Full-Spectrum Cybersecurity Guardian!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-106 contacts →

Exact match

“Appsecco Inc.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-105 contacts →

Exact match

“Every engagement led by consultants with 10-20 years of offensive security experience.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchStevenage, United KingdomHQ recorded Oct 19, 20261-103 contacts →

Exact match

“We are a selected team of UK based security professionals.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-503 contacts →

Exact match

“Zeroday Co, Ltd is a company focusing on developing and delivering state-of-art application security testing tools/platforms.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-103 contacts →

Exact match

“At Securityium, we're dedicated to transforming the way you experience security testing for your business.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchCambridge, United KingdomHQ recorded Oct 19, 202611-502 contacts →

Exact match

“We believe that effective cybersecurity is within the reach of every organisation.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchWorcester, United KingdomHQ recorded Oct 19, 20261-102 contacts →

Exact match

“We are a team of well-trained and experienced cybersecurity professionals that offer a multitude of testing, such as: Web application, Infrastructure penetration, Android…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-502 contacts →

Exact match

“Darklabs is the IT security company that offers powerful testing capabilities affordably to all, allowing our clients to test more, more frequently, for less.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchLeeds, United KingdomHQ recorded Oct 19, 202611-502 contacts →

Exact match

“Dhound is a cybersecurity company providing web application penetration testing, focused on manual approach and comprehensive delivery, helping IT companies be secure and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-102 contacts →

Exact match

“CyberLegion is a UK/EU-based cybersecurity company helping organizations build, test and operate secure digital products.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-101 contacts →

Exact match

“Websecurify is a web application security company.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchCheltenham, United KingdomHQ recorded Oct 19, 20261-101 contacts →

Exact match

“Achromatic Security Ltd is a small cyber security company based in the south of England.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-101 contacts →

Exact match

“Software security consulting, with a specialism in mobile & web technologies.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-101 contacts →

Exact match

“IT Security & Develpment”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 21 of 53 mobile application security testing software companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 204 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mobile application security testing software companies based in the United Kingdom at a glance

As of Oct 19, 2026
26.2%Verified-email coverage
14.7Average contacts per company
1-10Median size (employees)
50.9%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
16
51-200
5

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 53 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 “mobile application security testing 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 204 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 19, 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.

Mobile application security testing 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 “mobile application security testing software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mobile application security testing software companies are there based in the United Kingdom?

RevenueBase identified 53 company matches for mobile application security testing 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 mobile application security testing software companies?

London leads with 27 company records, followed by Manchester (3) and Edinburgh (2).

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 204 professional contacts with verified work emails tracked across these 53 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 19, 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.