Company lists · Data refreshed August 2026
Top 25 AI security companies based in London, United Kingdom
RevenueBase identified 125 AI security companies headquartered in London, United Kingdom as of August 2026 and tracks 3,682 professional contacts across them, including 998 with verified work emails and 818 with mobile numbers. London is the largest hub.
This list covers AI security companies headquartered in London, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 AI security companies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 729 contacts → | ||||
Indirect evidence “Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 635 contacts → | ||||
Indirect evidence “Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 237 contacts → | ||||
Partial evidence “Qodea, powered by Beyond, are a technology group building the world's leading cloud and cybersecurity solutions, from foundational infrastructure to advanced AI.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 199 contacts → | ||||
Partial evidence “Our mission is to make the world safer with simple, smart, and powerful physical security solutions.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 188 contacts → | ||||
Partial evidence “Headquartered in London U.K, Gorilla is a global solution provider in Security Intelligence, Network Intelligence, Business Intelligence and IoT technology.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 175 contacts → | ||||
Partial evidence “Prevalent AI is an AI-powered data fabric company, founded by GCHQ alumni, practitioners who spent their careers solving high-stakes intelligence problems in complex environments.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 100 contacts → | ||||
Partial evidence “Coram AI is building the future of Physical AI by turning cameras, sensors, and access systems into AI Safety Agents that protect people and optimize operations.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 96 contacts → | ||||
Strong evidence “MARSS is a global defence and security technology company specialising in AI-enabled Command and Control (C2/C4I), autonomous mission management, and multi-domain surveillance.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Indirect evidence “Canopy is a brand new company with a unique mission, solving for one of the biggest and growing challenges vehicle owners face – the threat of theft.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 64 contacts → | ||||
Partial evidence “We engineer secure, AI-driven software that helps businesses build, transform, and scale with confidence.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 59 contacts → | ||||
Partial evidence “watchTowr is the AI-driven Preemptive Exposure Management capability trusted by Fortune 500 companies and critical infrastructure providers.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 55 contacts → | ||||
Indirect evidence “There are over 1 billion CCTV cameras worldwide recording trillions of petabytes of video every day.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 52 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 40 contacts → | ||||
Partial evidence “The all-in-one cyber security platform that grows with you.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 36 contacts → | ||||
Partial evidence “The future of IoT/OT security is here.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “RMSS Ltd is a reputable and trustworthy company that has seen significant growth in the last decade.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 25 contacts → | ||||
Partial evidence “Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 contacts → | ||||
Strong evidence “Mindgard is the leading provider of AI Security solutions.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 contacts → | ||||
Indirect evidence “Athenian Tech Ltd.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 21 contacts → | ||||
Partial evidence “BlackFog is a global leader in AI-based cybersecurity and the pioneer of anti data exfiltration (ADX) technology.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 19 contacts → | ||||
Indirect evidence “At Cybersift, we believe cybersecurity should be intelligent, accessible, and built to empower everyone.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 contacts → | ||||
Partial evidence “Huntsman Security is the creator of the Huntsman Security Analytics Platform that protects sensitive environments and critical national infrastructure in the Five Eyes community.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Partial evidence “Vizgard is a multi-award-winning SME building a safer future by automating real-time Security and Defence optical systems that traditionally require repetitive or prolonged…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 14 contacts → | ||||
Indirect evidence “At NetraScale, we help businesses navigate the ever-evolving cybersecurity landscape with confidence.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 13 contacts → | ||||
Strong evidence “Praeferre is an AI-powered cybersecurity company, backed by SFC Capital, shaping the future of business security and compliance.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: AI security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names AI security companies.
- Partial evidence
- Its own public description names part of AI security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name AI security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 125 AI security companies based in London, United Kingdom
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AI security companies based in London, United Kingdom at a glance
As of Aug 29, 2026Companies by employee count
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 AI security companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in London, United Kingdom whose own description of what they do matches “AI security companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI security companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among AI security companies, and records with no verified work email. Companies headquartered outside London 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 its RevenueBase Smart Search 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, 998 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 August 29, 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.
AI security companies by metro in the United Kingdom
- AI security companies in London125
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI security companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many AI security companies are there based in London, United Kingdom?
RevenueBase identified 125 AI security companies headquartered in London, United Kingdom as of August 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?
Claroty, headquartered in London, tops this list with the largest team on record.
Which city has the most AI security companies?
London leads with 125 headquartered companies, followed by Manchester (9) and Oxford (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 998 verified decision-maker contacts tracked across these 125 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 29, 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 Smart Search, 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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