Company lists · Data refreshed November 2026

Top 17 Data breach response services based in the United Kingdom

RevenueBase identified 52 company matches for data breach response services associated with the United Kingdom as of November 2026 and tracks 603 professional contacts across them, including 252 with verified work emails. London is the largest hub.

This list covers company matches for data breach response 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 November 6, 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 Nov 6, 2026 How this list was built
52Companies
603Contacts tracked
252Verified emails
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The 17 largest data breach response services based in the United Kingdom

Ranked by team size
Top 17 of 52 company matches for data breach response services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20052 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCheadle, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBradford, United KingdomHQ recorded Nov 6, 202651-20023 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCambridge, United KingdomHQ recorded Nov 6, 202611-5016 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBorehamwood, United KingdomHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“Award-winning cybersecurity partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5013 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5011 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“As a specialist cyber response service, we are experts in our field, trusted when it really matters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchEssex, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“We offer everything you would expect from an outsourced Data Protection Officer, but unlike others we ensure a friendly easily accessible approach, perform termly school visits…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCity Of London, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Quadprime, part of Complyport, specialises in operational resilience, incident response, cybersecurity and data protection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“BreachAware® is a software service that provides organisations across the world with advanced analysis of compromised assets within data breaches to support the prevention of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBournemouth, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“We are cyber security services company based in Bournemouth, offering a wide range of services from security audits, assistance with compliance and certification to penetration…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchOldham, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“It’s a frightening thought, isn’t it?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Offering independent cyber, incident response, and digital investigations to a wide client base.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBrighton And Hove, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“VIVO Lifestyle Services delivers practical cyber resilience, identity protection and digital emergency support for consumers, small business, employees and members across the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGuildford, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“An Information Security company specialising in Security Operations, Incident Response and Forensic Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWest Runton, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“A local managed service provider with enterprise tools that protect, detect and respond to any issues on your computer and include the ability to roll back a ransomware attack…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 17 of 52 data breach response services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 252 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data breach response services based in the United Kingdom at a glance

As of Nov 6, 2026
41.8%Verified-email coverage
11.6Average contacts per company
1-10Median size (employees)
40.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
12
51-200
6
201-500
2
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 52 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 “data breach response 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 252 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 November 6, 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 “data breach response services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 52 company matches for data breach response services associated with the United Kingdom as of November 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?

Redscan, A Kroll Business tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most data breach response services?

London leads with 21 company records, followed by Cheltenham (2) and City Of London (2).

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 252 professional contacts with verified work emails tracked across these 52 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 November 6, 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.