Company lists · Data refreshed September 2026

Top 25 Threat intelligence platforms based in London, United Kingdom

Name: Threat intelligence platforms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 100 companies tracked

RevenueBase identified 100 threat intelligence platforms headquartered in London, United Kingdom as of September 2026 and tracks 7,669 professional contacts across them, including 3,548 with verified work emails and 1,208 with mobile numbers. London is the largest hub.

This list covers threat intelligence platforms 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 September 13, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 13, 2026 86% judged on-target in blind review

100Companies

7,669Contacts tracked

3,548Verified emails

1,208Mobile numbers

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The 25 largest threat intelligence platforms based in London, United Kingdom

Ranked by team size

Top 25 of 100 threat intelligence platforms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to threat intelligence platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Globaldata PLC	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	2,779 contacts →
	Indirect evidence “In a world drowning in data, we deliver clarity.” Source: RevenueBase Database · checked Sep 13, 2026
2	Mimecast	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	2,304 contacts →
	Indirect evidence “organizations.” Source: RevenueBase Database · checked Sep 13, 2026
3	Signal AI	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	238 contacts →
	Partial evidence “Signal AI is a leading reputation and risk intelligence company helping business leaders make sense of the outside world.” Source: RevenueBase Database · checked Sep 13, 2026
4	Deepcytes Cyber Labs UK	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	177 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026
5	RED Sift	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	109 contacts →
	Indirect evidence “Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.” Source: RevenueBase Database · checked Sep 13, 2026
6	Marss Group	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	97 contacts →
	Indirect 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 Sep 13, 2026
7	White HAT An Epam Company	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	77 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026
8	Silobreaker	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	65 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026
9	Senseon	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	54 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 Sep 13, 2026
10	Keepnet	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	53 contacts →
	Indirect evidence “Our Vision: At Keepnet, we see the future of cybersecurity differently.” Source: RevenueBase Database · checked Sep 13, 2026
11	Graphaware	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	51 contacts →
	Partial evidence “At GraphAware, we’re building a new approach to intelligence analysis.” Source: RevenueBase Database · checked Sep 13, 2026
12	Secalliance	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	41 contacts →
	Strong evidence “SecAlliance delivers cyber threat intelligence services to banks, central banks, financial market infrastructures, governmental and EU agencies, international organisations, and…” Source: RevenueBase Database · checked Sep 13, 2026
13	Nothreat	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	36 contacts →
	Indirect evidence “The future of IoT/OT security is here.” Source: RevenueBase Database · checked Sep 13, 2026
14	CYJAX	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	29 contacts →
	Strong evidence “CYJAX is an award-winning technology company and provider of digital threat intelligence services to international corporations, law enforcement agencies and the public sector.” Source: RevenueBase Database · checked Sep 13, 2026
15	Cyber Defence Alliance	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Strong evidence “The CDA is a not for profit cyber threat intelligence organisation headquartered in the United Kingdom.” Source: RevenueBase Database · checked Sep 13, 2026
16	LEO Cybsec	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Partial evidence “Leo CybSec is the company behind Hoplon, an AI-powered cybersecurity platform designed for growing, data-driven businesses.” Source: RevenueBase Database · checked Sep 13, 2026
17	Onefirewall Alliance	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Indirect evidence “OneFirewall is the most comprehensive security solution to date.” Source: RevenueBase Database · checked Sep 13, 2026
18	Recyber	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Indirect evidence “OUR business is protecting YOUR business” Source: RevenueBase Database · checked Sep 13, 2026
19	Meet Jenny	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	9 contacts →
	Indirect evidence “https://deciphercyber.com/ Company Fact - Jenny gets 10K new visitors to the portal every month and that number is growing.” Source: RevenueBase Database · checked Sep 13, 2026
20	Cyberseer	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Partial evidence “Cyberseer offers Advanced Threat Detection and a 24×7 Managed Security Service (MSS).” Source: RevenueBase Database · checked Sep 13, 2026
21	Elemendar- Making Intelligence Actionable	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Strong evidence “Elemendar develops Artificial Intelligence which reads cyber threat reports (CTI) authored by humans and instantly translates them into industry-standard machine-readable and…” Source: RevenueBase Database · checked Sep 13, 2026
22	Riskxchange	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Partial evidence “RiskXchange is an information security technology company, that helps companies of all sizes fight the threat of cyber threats by providing instant risk ratings for any company…” Source: RevenueBase Database · checked Sep 13, 2026
23	Countershadow	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “CounterShadow is redefining the cybersecurity landscape as the future of agentic cybersecurity.” Source: RevenueBase Database · checked Sep 13, 2026
24	Priam Cyber AI	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Partial evidence “Priam Cyber AI builds AVA (Advanced Virtual Analyst), an AI SOC platform that investigates alerts the way an analyst would.” Source: RevenueBase Database · checked Sep 13, 2026
25	Medicare Network	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026

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: threat intelligence platforms. 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 threat intelligence platforms.
Partial evidence: Its own public description names part of threat intelligence platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name threat intelligence platforms. 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 100 threat intelligence platforms based in London, United Kingdom

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Threat intelligence platforms based in London, United Kingdom at a glance

As of Sep 13, 2026

46.3%Verified-email coverage

15.8%Mobile-number coverage

76.7Average contacts per company

11-50Median size (employees)

91.0%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

2,7900–30

70231–60

861–90

490–180

44180+

Company record updated

Median 64.0d

00–30

3,58931–60

2,98961–90

65490–180

437180+

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 threat intelligence platforms, 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 “threat intelligence platforms”. 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 threat intelligence platforms), 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 threat intelligence platforms, 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, 3,548 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 13, 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.

Threat intelligence platforms by metro in the United Kingdom

Threat intelligence platforms in London91

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 threat intelligence platforms, 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 threat intelligence platforms are there based in London, United Kingdom?

RevenueBase identified 100 threat intelligence platforms headquartered in London, 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?

Globaldata PLC, headquartered in London, tops this list with the largest team on record.

Which city has the most threat intelligence platforms?

London leads with 91 headquartered companies, followed by Edinburgh (4) and Manchester (4).

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 3,548 verified decision-maker contacts tracked across these 100 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 13, 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.