Company lists · Data refreshed September 2026
Top 25 Machine learning security companies based in the United Kingdom
RevenueBase identified 107 machine learning security companies headquartered in the United Kingdom as of September 2026 and tracks 8,496 professional contacts across them, including 4,687 with verified work emails and 1,412 with mobile numbers. London is the largest hub.
This list covers machine learning security companies headquartered in the 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 25 largest machine learning security companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,925 | ||||
“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,355 | ||||
“Darktrace is a global leader in AI cybersecurity, providing the essential cybersecurity platform to secure organizations today and for an ever-changing future.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 125 | ||||
“Our mission is to eliminate the most complex cybersecurity challenge every organization faces: insider risk.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 109 | ||||
“Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 92 | ||||
“Mind Foundry is a UK sovereign applied machine learning company spun out of the University of Oxford, providing responsible solutions for Defence & National Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 68 | ||||
“The organisations that run our world face relentless complexity and evolving threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 66 | ||||
“We help businesses and individuals stay protected in an increasingly complex digital world.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 54 | ||||
“SenseOn deploys alongside all of your existing tools, unifying them into a single investigation plane and augmenting your team with cross-domain correlation, analytics, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 36 | ||||
“The future of IoT/OT security is here.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 30 | ||||
“By delivering enhanced threat intelligence, through a ground-breaking SaaS platform or API feed, we increase the volume, quality and accuracy of your data.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 | ||||
“Award-winning BlockAPT is redefining cybersecurity with an AI-powered, autonomous, self-defending platform built to protect modern digital ecosystems at speed and scale.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 14 | ||||
“Demand more from your AI & Data Security partner.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | LEO CybsecIndirect evidence | 14 | |||
“Leo CybSec is the company behind Hoplon, an AI-powered cybersecurity platform designed for growing, data-driven businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 | ||||
“Do you want to improve the performance of your team securely, accurately and without compromising your data?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 13 | ||||
“Praeferre is an AI-powered cybersecurity company, backed by SFC Capital, shaping the future of business security and compliance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 11 | ||||
“ENSL offers a range of Artificial Intelligence Driven Cyber-security and digital transformation services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 | ||||
“DefensityOne is a cybersecurity solutions provider specializing in proactive threat detection, risk management, and digital defense services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 | ||||
“Cyberseer offers Advanced Threat Detection and a 24×7 Managed Security Service (MSS).” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 | ||||
“Covenda is AI cybersecurity with cutting-edge threat modeling and ML-powered risk prediction to counter cyber attacks on businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 | ||||
“CounterShadow is redefining the cybersecurity landscape as the future of agentic cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 | ||||
“We provide continual threat intelligence using AI & behavioral analytics to identify hidden fraud risks, providing trusted and authentic user experiences.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 | ||||
“Medicare Network is a niche, agile cybersecurity and risk management company offering a range of industry-leading and advanced solutions that combines human intelligence…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 | ||||
“AI Assurance for Autonomous Systems” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 | ||||
“CyberAlarm is an intuitive, cloud-based, AI-driven cyber security solution that protects your and your clients’ businesses – without over complication and high costs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 | ||||
“CyberSiARA – Redefining the Future of Bot Protection CyberSiARA is a fast-growing cybersecurity company transforming how organisations protect their digital platforms against…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 107 machine learning security companies based in the United Kingdom
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Machine learning security companies based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 machine learning security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “machine learning security companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among machine learning security companies, and records with no verified work email. Companies headquartered outside United Kingdom 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 an evidence 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, 4,687 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 5, 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.
Machine learning security companies by metro
- Machine learning security companies in London58
Frequently asked
How many machine learning security companies are there based in the United Kingdom?
RevenueBase identified 107 machine learning security companies headquartered in the 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?
Sophos, headquartered in Abingdon, tops this list with the largest team on record.
Which city has the most machine learning security companies?
London leads with 58 headquartered companies, followed by Derby (3) and Edinburgh (3).
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 4,687 verified decision-maker contacts tracked across these 107 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 5, 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.
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