Company lists · Data refreshed September 2026
Top 25 Machine learning threat detection companies based in the United Kingdom
RevenueBase identified 139 machine learning threat detection companies headquartered in the United Kingdom as of September 2026 and tracks 12,696 professional contacts across them, including 6,568 with verified work emails and 2,416 with mobile numbers. London is the largest hub.
This list covers machine learning threat detection 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 threat detection 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 | 2,304 | ||||
“organizations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 502 | ||||
“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 297 | ||||
“At Quorum Cyber, we're on a mission to help good people win.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 177 | ||||
“Whether you’re a business or an individual, digital threats to your precious data and assets can come in any form - external or internal.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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. | |||||
| 8 | White HAT An Epam CompanyIndirect evidence | 77 | |||
“White Hat, part of the EPAM group, is an award-winning cyber intelligence and offensive security company that leverages an attacker’s perspective to shape innovative, proactive…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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. | |||||
| 10 | 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. | |||||
| 11 | 65 | ||||
“Silobreaker is a technology company that builds solutions that unify data, contextual analysis, and human expertise to deliver decision-grade intelligence when and where it…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 60 | ||||
“Garrison is a London-based cybersecurity company founded in 2014 by David Garfield (CEO) and Henry Harrison (Chief Scientist).” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Adarma SecurityPartial evidence | 51 | |||
“We are Adarma, independent leaders in detection and response services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 42 | ||||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 41 | ||||
“We are on a mission to simplify and scale cyber security by combining AI, automation, expert-led services, in a unified platform: giving every organisation, from MSPs to global…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 36 | ||||
“The future of IoT/OT security is here.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 | ||||
“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 32 | ||||
“Intrinsic Security is a UK-headquartered cybersecurity firm delivering 24/7 threat detection, incident response, and resilience across cloud, hybrid, OT, IoT, and identity…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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. | |||||
| 20 | 25 | ||||
“Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | ClearswiftIndirect evidence | 19 | |||
“Why Clearswift?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 | ||||
“CyberHive protects the most valued organisations, their people data, and assets, with patented technology that is simple, secure and performant.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 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. | |||||
| 25 | 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. | |||||
Showing 25 of 139 machine learning threat detection companies based in the United Kingdom
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Machine learning threat detection 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 threat detection 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 threat detection 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 threat detection 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, 6,568 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 threat detection companies by metro
- Machine learning threat detection companies in London72
Frequently asked
How many machine learning threat detection companies are there based in the United Kingdom?
RevenueBase identified 139 machine learning threat detection 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 threat detection companies?
London leads with 72 headquartered companies, followed by Manchester (6) and Edinburgh (5).
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 6,568 verified decision-maker contacts tracked across these 139 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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