Company lists · Data refreshed September 2026

Top 25 Cybersecurity incident investigation companies based in the United Kingdom

Name: Cybersecurity incident investigation companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 180 companies tracked

RevenueBase identified 180 cybersecurity incident investigation companies headquartered in the United Kingdom as of September 2026 and tracks 2,805 professional contacts across them, including 646 with verified work emails. London is the largest hub.

This list covers cybersecurity incident investigation companies 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

180Companies

2,805Contacts tracked

646Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cybersecurity incident investigation companies based in the United Kingdom

Ranked by team size

Top 25 of 180 cybersecurity incident investigation companies 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 cybersecurity incident investigation companies: 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	Deepcytes Cyber Labs UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	177 contacts →
	Indirect 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 28, 2026
2	CCL Solutions Group	Partial evidence	Stratford Upon Avon, United KingdomHQ checked Sep 28, 2026	51-200	138 contacts →
	Partial evidence “CCL Solutions Group is one of Europe’s leading digital forensics, digital investigation and cyber security specialists, supporting law enforcement, government agencies, military…” Source: RevenueBase Database · checked Sep 28, 2026
3	Foregenix	Indirect evidence	Swindon, United KingdomHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
4	Reliance Cyber	Indirect evidence	Waterloo, United KingdomHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “At Reliance Cyber, we believe in truly partnering with our customers.” Source: RevenueBase Database · checked Sep 28, 2026
5	Sytech	Indirect evidence	Stoke-on-trent, United KingdomHQ checked Sep 28, 2026	51-200	64 contacts →
	Indirect evidence “Empowering Decision Making Through Subject-Matter Expertise.” Source: RevenueBase Database · checked Sep 28, 2026
6	Hexegic	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
7	Adarma Security	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	201-500	51 contacts →
	Indirect evidence “We are Adarma, independent leaders in detection and response services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Intaforensics	Indirect evidence	Nuneaton, United KingdomHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “IntaForensics is a leading UK provider of Cyber Security, Digital Forensics, e-Discovery, and Cell Site Analysis services.” Source: RevenueBase Database · checked Sep 28, 2026
9	Cyberq Group	Partial evidence	Birmingham, United KingdomHQ checked Sep 28, 2026	51-200	42 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
10	Core To Cloud	Partial evidence	Cirencester, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “We help organisations understand, optimise, and strengthen their cybersecurity.” Source: RevenueBase Database · checked Sep 28, 2026
11	Secarma LTD	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “Secarma exists to keep the world safe.” Source: RevenueBase Database · checked Sep 28, 2026
12	Cyberis	Indirect evidence	Tewkesbury, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “Cyberis are pioneers in customer-focussed information security.” Source: RevenueBase Database · checked Sep 28, 2026
13	defense.com	Indirect evidence	Stevenage, United KingdomHQ checked Sep 28, 2026	51-200	32 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
14	Intrinsic Security	Strong evidence	Peterborough, United KingdomHQ checked Sep 28, 2026	51-200	32 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
15	Procheckup PCU	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Imagine a world where cyber threats are simply another challenge that you're fully equipped to handle.” Source: RevenueBase Database · checked Sep 28, 2026
16	CYJAX	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	29 contacts →
	Indirect 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 28, 2026
17	AMR Cybersecurity	Partial evidence	Cheltenham, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “AMR CyberSecurity delivers next generation cyber security services to assist organisations across a wide variety of sectors in understanding potential threats and effectively…” Source: RevenueBase Database · checked Sep 28, 2026
18	Cybercrowd	Indirect evidence	Newbury, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “CyberCrowd are a market leader in the cyber security realm, offering everything from Assessment Services through to Pen Testing, CISOaaS, Certification Readiness, DPO services…” Source: RevenueBase Database · checked Sep 28, 2026
19	Templar Executives	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “Templar Executives is an award winning, international Cyber Security advisory services and solutions company operating at the highest levels across the public and private sectors.” Source: RevenueBase Database · checked Sep 28, 2026
20	3b Data Security	Partial evidence	Cambridge, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Digital Forensics, Incident Response & Data Breach Management Services 3B Data Security is an approved PCI SSC PCI Forensic Investigator (PFI) and Qualified Security Assessor…” Source: RevenueBase Database · checked Sep 28, 2026
21	Secure Purple	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Source: RevenueBase Database · checked Sep 28, 2026
22	th4ts3cur1ty.company	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “th4ts3cur1ty.company supplies cyber security services internationally.” Source: RevenueBase Database · checked Sep 28, 2026
23	BLD Blue Lights Digital	Indirect evidence	Duxford, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “The digital age is the new normal.” Source: RevenueBase Database · checked Sep 28, 2026
24	Isanctuary	Partial evidence	Cambridge, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Technology & Forensic Investigation Company for Asset Tracing, Fraud, & Financial Disputes When your money, assets, or reputation are at risk, you need answers you can trust.” Source: RevenueBase Database · checked Sep 28, 2026
25	Cyber Armed Security	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “At Cyber Armed Security, we protect organisations worldwide from evolving cyber threats through intelligence-driven ethical hacking.” Source: RevenueBase Database · checked Sep 28, 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: cybersecurity incident investigation companies. 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 cybersecurity incident investigation companies.
Partial evidence: Its own public description names part of cybersecurity incident investigation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity incident investigation companies. 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 180 cybersecurity incident investigation companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 646 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity incident investigation companies based in the United Kingdom at a glance

As of Sep 28, 2026

23.0%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

41.1%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 180 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 cybersecurity incident investigation companies, 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 “cybersecurity incident investigation companies”. 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 cybersecurity incident investigation companies), 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 cybersecurity incident investigation companies, 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, 646 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.

Cybersecurity incident investigation companies by metro

Cybersecurity incident investigation companies in London74

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 cybersecurity incident investigation companies, 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 cybersecurity incident investigation companies are there based in the United Kingdom?

RevenueBase identified 180 cybersecurity incident investigation companies 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?

Deepcytes Cyber Labs UK, headquartered in London, tops this list with the largest team on record.

Which city has the most cybersecurity incident investigation companies?

London leads with 74 headquartered companies, followed by Manchester (8) and Cheltenham (6).

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 646 verified decision-maker contacts tracked across these 180 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.

Ready to reach these companies? Verified emails and direct dials for all 180 cybersecurity incident investigation companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity incident investigation companies by geography

Browse the directory

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.