Company lists · Data refreshed September 2026

Top 25 Breach detection services based in the United Kingdom

Name: Breach detection services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 162 companies tracked

RevenueBase identified 162 company matches for breach detection services associated with the United Kingdom as of September 2026 and tracks 6,833 professional contacts across them, including 3,368 with verified work emails. London is the largest hub.

This list covers company matches for breach detection services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

162Companies

6,833Contacts tracked

3,368Verified emails

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The 25 largest breach detection services based in the United Kingdom

Ranked by team size

Top 25 of 162 company matches for breach detection services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Sophos	Exact match	Abingdon, United KingdomHQ recorded Sep 19, 2026	5,001-10,000	4,925 contacts →
	Exact match “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Obrela	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	242 contacts →
	Exact match “Obrela Security Industries is a global provider of cyber security services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Deepcytes Cyber Labs UK	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	177 contacts →
	Exact match “Whether you’re a business or an individual, digital threats to your precious data and assets can come in any form - external or internal.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Wavenet Cyberguard	Exact match	Stourport-on-severn, United KingdomHQ recorded Sep 19, 2026	201-500	86 contacts →
	Exact match “CyberGuard Technologies is the security division of Wavenet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Cybersmart	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	84 contacts →
	Exact match “Cybersecurity should be simple.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Foregenix	Exact match	Swindon, United KingdomHQ recorded Sep 19, 2026	51-200	80 contacts →
	Exact match “When your business relies on security, compliance and a strong reputation for taking care of your customers, you need a partner that understands your ethos, your challenges and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Hexegic	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	52 contacts →
	Exact match “At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Redscan, A Kroll Business	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	51 contacts →
	Exact match “Redscan is an award-winning provider of managed security services, specialising in Managed Detection and Response, Penetration Testing and Red Teaming.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Adarma Security	Exact match	Edinburgh, United KingdomHQ recorded Sep 19, 2026	201-500	51 contacts →
	Exact match “We are Adarma, independent leaders in detection and response services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Cyberq Group	Exact match	Birmingham, United KingdomHQ recorded Sep 19, 2026	51-200	42 contacts →
	Exact match “CyberQ Group is an award-winning, venture-backed, and globally accredited [ISO27K and CREST] cybersecurity leader dedicated to bridging the "protection gap" for high-stakes…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Cybaverse	Exact match	Portsmouth, United KingdomHQ recorded Sep 19, 2026	51-200	41 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Core To Cloud	Exact match	Cirencester, United KingdomHQ recorded Sep 19, 2026	11-50	39 contacts →
	Exact match “We help organisations understand, optimise, and strengthen their cybersecurity.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Secarma LTD	Exact match	Manchester, United KingdomHQ recorded Sep 19, 2026	11-50	36 contacts →
	Exact match “Secarma exists to keep the world safe.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	defense.com	Exact match	Stevenage, United KingdomHQ recorded Sep 19, 2026	51-200	32 contacts →
	Exact match “Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Intrinsic Security	Exact match	Peterborough, United KingdomHQ recorded Sep 19, 2026	51-200	32 contacts →
	Exact match “Intrinsic Security is a UK-headquartered cybersecurity firm delivering 24/7 threat detection, incident response, and resilience across cloud, hybrid, OT, IoT, and identity…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	AMR Cybersecurity	Exact match	Cheltenham, United KingdomHQ recorded Sep 19, 2026	11-50	23 contacts →
	Exact match “AMR CyberSecurity delivers next generation cyber security services to assist organisations across a wide variety of sectors in understanding potential threats and effectively…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Ecsc Part Of The Wavenet Group	Exact match	Bradford, United KingdomHQ recorded Sep 19, 2026	51-200	23 contacts →
	Exact match “22 June 2023 – Daisy Corporate Services announced the acquisition of cyber security service provider, ECSC Group plc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Blue Cube Security LTD	Exact match	East Grinstead, United KingdomHQ recorded Sep 19, 2026	11-50	22 contacts →
	Exact match “Blue Cube Security is a trusted UK cyber security partner with over 25 years of experience helping organisations stay secure in an increasingly complex digital world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	3b Data Security	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	11-50	21 contacts →
	Exact match “Digital Forensics, Incident Response & Data Breach Management Services 3B Data Security is an approved PCI SSC PCI Forensic Investigator (PFI) and Qualified Security Assessor…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Lrqa Nettitude	Exact match	Birmingham, United KingdomHQ recorded Sep 19, 2026	201-500	15 contacts →
	Exact match “Best penetration testing service - Teiss Awards 2024 Managed cloud service winner - Stratus Awards 2023 Security vendor of the year - Computing security excellence awards 2023…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Datasixth Consulting	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	15 contacts →
	Exact match “Who We Are DataSixth delivers Cybersecurity Intelligence.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Socguardians LTD	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	13 contacts →
	Exact match “Our mission at SOCGuardians is to empower organizations to operate confidently in a digital world by providing cutting-edge cybersecurity services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Asceris	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Data Connect Group	Exact match	Harrogate, United KingdomHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “Data Connect Group provides continuous "real-world" cyber risk assurance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	First Response	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “First Response is a London based specialist cybersecurity, cyber incident response and digital investigation company that helps organisations navigate the complex issues…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “breach detection services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 162 breach detection services based in the United Kingdom

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Breach detection services based in the United Kingdom at a glance

As of Sep 19, 2026

49.3%Verified-email coverage

42.2Average contacts per company

11-50Median size (employees)

37.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 162 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United Kingdom whose business descriptions match “breach detection services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,368 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “breach detection services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many breach detection services are there based in the United Kingdom?

RevenueBase identified 162 company matches for breach detection services associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Sophos tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most breach detection services?

London leads with 61 company records, followed by Birmingham (6) and Manchester (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,368 professional contacts with verified work emails tracked across these 162 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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.