Company lists · Data refreshed September 2026

Top 18 Network detection and response platforms based in the United Kingdom

RevenueBase identified 40 network detection and response platforms headquartered in the United Kingdom as of September 2026 and tracks 2,944 professional contacts across them, including 1,937 with verified work emails. London is the largest hub.

This list covers network detection and response platforms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
40Companies
2,944Contacts tracked
1,937Verified emails
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The 18 largest network detection and response platforms based in the United Kingdom

Ranked by team size
Top 18 of 40 network detection and response platforms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to network detection and response 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceCambridge, United KingdomHQ checked Sep 29, 20261,001-5,0002,355 contacts →

Partial evidence

“Darktrace is a global leader in AI cybersecurity, providing the essential cybersecurity platform to secure organizations today and for an ever-changing future.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-200109 contacts →

Partial evidence

“Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceAbingdon, United KingdomHQ checked Sep 29, 202651-20061 contacts →

Strong evidence

“e2e-assure is the UK's leading specialist in Managed Threat Detection and Response through our 24/7/365 UK owned and operated Security Operations Centre (SOC).”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceLondon, United KingdomHQ checked Sep 29, 202651-20051 contacts →

Strong evidence

“Redscan is an award-winning provider of managed security services, specialising in Managed Detection and Response, Penetration Testing and Red Teaming.”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceEdinburgh, United KingdomHQ checked Sep 29, 2026201-50051 contacts →

Strong evidence

“We are Adarma, independent leaders in detection and response services.”

Source: RevenueBase Database · checked Sep 29, 2026
6Strong evidenceMilton Keynes, United KingdomHQ checked Sep 29, 202611-5042 contacts →

Strong evidence

“CYSIAM® provides an entirely UK-based and threat-led 24/7 Managed Detection and Response (MDR) service.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5041 contacts →

Indirect evidence

“Know what’s protected and gain a trusted view of your endpoints.”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidencePortsmouth, United KingdomHQ checked Sep 29, 202651-20041 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceCardiff, United KingdomHQ checked Sep 29, 202611-5038 contacts →

Indirect evidence

“With constant vigilance against cyber threats comes the calm to grow your business.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceChester, United KingdomHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“Protos Networks is an award-winning network and cyber security services specialist based in the North West of England.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceSouthwark, United KingdomHQ checked Sep 29, 202611-5016 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5010 contacts →

Indirect evidence

“Exalens unifies device and process monitoring to autonomously learn every detail of how your industrial systems and processes work.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-508 contacts →

Partial evidence

“Cyberseer offers Advanced Threat Detection and a 24×7 Managed Security Service (MSS).”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceLondon, United KingdomHQ checked Sep 29, 20261-107 contacts →

Indirect evidence

“CounterShadow is redefining the cybersecurity landscape as the future of agentic cybersecurity.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 29, 20261-107 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 29, 2026
16Strong evidenceLondon, United KingdomHQ checked Sep 29, 20261-102 contacts →

Strong evidence

“We are delighted to announce the acquisition of the industry leading PHALANX Clavisi, Cyber Security Platform PREVENT, DETECT, and RESPOND to Cyber Attacks”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Seedata.io detect attackers by luring them to disclose their presence, turning their own techniques against them.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceBasingstoke, United KingdomHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“DDI Security and Automation”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 18 of 40 network detection and response platforms based in the United Kingdom

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Network detection and response platforms based in the United Kingdom at a glance

As of Sep 29, 2026
65.8%Verified-email coverage
73.6Average contacts per company
11-50Median size (employees)
42.5%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
13
51-200
7
201-500
1
501-1,000
2
1,001-5,000
1

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 40 companies.

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 network detection and response 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 the United Kingdom whose own description of what they do matches “network detection and response 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 network detection and response 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 network detection and response platforms, 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 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, 1,937 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 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.

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 network detection and response 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 network detection and response platforms are there based in the United Kingdom?

RevenueBase identified 40 network detection and response platforms 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?

Darktrace, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most network detection and response platforms?

London leads with 17 headquartered companies, followed by Basingstoke (1) and Bletchley (1).

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 1,937 verified decision-maker contacts tracked across these 40 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 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.