Company lists · Data refreshed September 2026

Top 20 Incident response platforms based in the United Kingdom

RevenueBase identified 40 incident response platforms headquartered in the United Kingdom as of September 2026 and tracks 504 professional contacts across them, including 244 with verified work emails. London is the largest hub.

This list covers incident 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 28, 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 28, 2026 86% judged on-target in blind review
40Companies
504Contacts tracked
244Verified emails
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The 20 largest incident response platforms based in the United Kingdom

Ranked by team size
Top 20 of 40 incident response platforms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to incident 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 evidenceLondon, United KingdomHQ checked Sep 28, 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 28, 2026
2Indirect evidenceLondon, United KingdomHQ checked Sep 28, 202651-20054 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 28, 2026
3Partial evidenceEdinburgh, United KingdomHQ checked Sep 28, 2026201-50051 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidencePortsmouth, United KingdomHQ checked Sep 28, 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 28, 2026
5Indirect evidenceStevenage, United KingdomHQ checked Sep 28, 202651-20032 contacts →

Indirect evidence

“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.”

Source: RevenueBase Database · checked Sep 28, 2026
6Strong evidencePeterborough, United KingdomHQ checked Sep 28, 202651-20032 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceLondon, United KingdomHQ checked Sep 28, 202611-5020 contacts →

Partial evidence

“Crises Control is a global leader in Crisis and Incident Management software, helping organisations across all industries and organisation sizes protect their people and maintain…”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceSouthwark, United KingdomHQ checked Sep 28, 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 28, 2026
9Indirect evidenceNewark-on-trent, United KingdomHQ checked Sep 28, 202611-5014 contacts →

Indirect evidence

“Our Mission: Safer Places, Everywhere At Halo Solutions, we are on a mission to transform how technology is used to protect people.”

Source: RevenueBase Database · checked Sep 28, 2026
10Strong evidenceLondon, United KingdomHQ checked Sep 28, 202611-5011 contacts →

Strong evidence

“From our diverse backgrounds in cyber incident response, forensic investigations, automation, data science and cyber insurance, we have a unique perspective on how to improve…”

Source: RevenueBase Database · checked Sep 28, 2026
11Strong evidenceLondon, United KingdomHQ checked Sep 28, 202611-5011 contacts →

Strong evidence

“First Response is a London based specialist cybersecurity, cyber incident response and digital investigation company that helps organisations navigate the complex issues…”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 28, 20261-107 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceLondon, United KingdomHQ checked Sep 28, 20261-107 contacts →

Partial evidence

“Zerodai is the productivity platform for cyber security teams.”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 28, 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 28, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 28, 20261-105 contacts →

Indirect evidence

“Automate the boring.”

Source: RevenueBase Database · checked Sep 28, 2026
16Strong evidenceHove, United KingdomHQ checked Sep 28, 202611-505 contacts →

Strong evidence

“Locate-Global, a subsidiary of the Priavo Security Group, is a Global Incident Management platform designed to strengthen organisational resilience and enhance workforce safety…”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceLoughton, United KingdomHQ checked Sep 28, 20261-104 contacts →

Partial evidence

“Supporting you through the every-day & in the unpredictable with our on-call incident management app.”

Source: RevenueBase Database · checked Sep 28, 2026
18Strong evidenceLondon, United KingdomHQ checked Sep 28, 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 28, 2026
19Indirect evidenceLondon, United KingdomHQ checked Sep 28, 202611-502 contacts →

Indirect evidence

“OwlGaze is the cybersecurity software company behind Blacklight AI SIEM.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceSutton, United KingdomHQ checked Sep 28, 202651-2001 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026

Showing 20 of 40 incident response platforms based in the United Kingdom

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Incident response platforms based in the United Kingdom at a glance

As of Sep 28, 2026
48.4%Verified-email coverage
12.6Average contacts per company
11-50Median size (employees)
47.5%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
10
51-200
8
201-500
1
501-1,000
1
10001+
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 incident 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 “incident 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 incident 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 incident 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, 244 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 28, 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 incident 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 incident response platforms are there based in the United Kingdom?

RevenueBase identified 40 incident 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?

RED Sift, headquartered in London, tops this list with the largest team on record.

Which city has the most incident response platforms?

London leads with 19 headquartered companies, followed by Derby (2) and Manchester (2).

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 244 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 28, 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.