Company lists · Data refreshed September 2026

Top 25 Financial services cybersecurity companies based in the United Kingdom

Name: Financial services cybersecurity 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 337 companies tracked

RevenueBase identified 337 company matches for financial services cybersecurity companies associated with the United Kingdom as of September 2026 and tracks 9,911 professional contacts across them, including 4,119 with verified work emails. London is the largest hub.

This list covers company matches for financial services cybersecurity companies 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 28, 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 28, 2026 How this list was built

337Companies

9,911Contacts tracked

4,119Verified emails

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The 25 largest financial services cybersecurity companies based in the United Kingdom

Ranked by team size

Top 25 of 337 company matches for financial services cybersecurity companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 28, 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 28, 2026 · View company records in RevenueBase
2	Securityhq	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	502 contacts →
	Exact match “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Obrela	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
4	Cyberfort	Exact match	Thatcham, United KingdomHQ recorded Sep 28, 2026	51-200	159 contacts →
	Exact match “At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Performanta	Exact match	Maidenhead, United KingdomHQ recorded Sep 28, 2026	51-200	156 contacts →
	Exact match “Performanta is a global cybersecurity and data risk management company dedicated to protecting people where data matters most.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Bulletproof Cyber Security	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	123 contacts →
	Exact match “Bulletproof is now part of WorkNest Secure.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Foregenix	Exact match	Swindon, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
8	Reliance Cyber	Exact match	Waterloo, United KingdomHQ recorded Sep 28, 2026	51-200	80 contacts →
	Exact match “At Reliance Cyber, we believe in truly partnering with our customers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Eset UK	Exact match	Bournemouth, United KingdomHQ recorded Sep 28, 2026	51-200	66 contacts →
	Exact match “We help businesses and individuals stay protected in an increasingly complex digital world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Hexegic	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
11	Adarma Security	Exact match	Edinburgh, United KingdomHQ recorded Sep 28, 2026	201-500	51 contacts →
	Exact match “We are Adarma, independent leaders in detection and response services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Mitigo Group	Exact match	Cheadle, United KingdomHQ recorded Sep 28, 2026	51-200	38 contacts →
	Exact match “Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Secarma LTD	Exact match	Manchester, United KingdomHQ recorded Sep 28, 2026	11-50	36 contacts →
	Exact match “Secarma exists to keep the world safe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Barrier Networks	Exact match	Glasgow, United KingdomHQ recorded Sep 28, 2026	11-50	34 contacts →
	Exact match “We are your strategic cybersecurity partner – going beyond traditional models to deliver agile, expert-led protection tailored to the needs of regulated industries and critical…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Cyberis	Exact match	Tewkesbury, United KingdomHQ recorded Sep 28, 2026	11-50	34 contacts →
	Exact match “Cyberis are pioneers in customer-focussed information security.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	defense.com	Exact match	Stevenage, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
17	Intrinsic Security	Exact match	Peterborough, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
18	Cyb3r	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	32 contacts →
	Exact match “CYB3R Group, is a leading provider of comprehensive Cyber Security, IT and Communications Solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Procheckup PCU	Exact match	Portsmouth, United KingdomHQ recorded Sep 28, 2026	11-50	29 contacts →
	Exact match “Imagine a world where cyber threats are simply another challenge that you're fully equipped to handle.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	J2 Mssp	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	29 contacts →
	Exact match “Cyber security is the modern business' greatest risk.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Vambrace Cybersecurity	Exact match	Leeds, United KingdomHQ recorded Sep 28, 2026	11-50	24 contacts →
	Exact match “Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Nanjgel Solutions	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	24 contacts →
	Exact match “Nanjgel Solutions is focused on delivering the best IT security for businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	AMR Cybersecurity	Exact match	Cheltenham, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
24	Pentesec	Exact match	Peterborough, United KingdomHQ recorded Sep 28, 2026	51-200	23 contacts →
	Exact match “Check Point Partner of the Year 2022 CRN MSSP of the Year 2021 Pentesec has been challenging the status quo in Cyber Security since 2014 when 5 industry veterans decided they were…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Blackfoot Cybersecurity	Exact match	Welwyn Garden City, United KingdomHQ recorded Sep 28, 2026	11-50	23 contacts →
	Exact match “For the past 17 years, we have been successfully empowering our clients to protect their business from cyber-threats and comply with industry standards and regulations.” Recorded in the RevenueBase company graph · Sep 28, 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 “financial services cybersecurity companies”. 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 337 financial services cybersecurity companies based in the United Kingdom

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Financial services cybersecurity companies based in the United Kingdom at a glance

As of Sep 28, 2026

41.6%Verified-email coverage

29.4Average contacts per company

1-10Median size (employees)

43.6%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

191

11-50

108

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 337 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 “financial services cybersecurity companies” 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 4,119 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 28, 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.

Financial services cybersecurity companies by metro

Financial services cybersecurity companies in London147

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 “financial services cybersecurity companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many financial services cybersecurity companies are there based in the United Kingdom?

RevenueBase identified 337 company matches for financial services cybersecurity companies 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 financial services cybersecurity companies?

London leads with 147 company records, followed by Manchester (16) and Cheltenham (7).

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 4,119 professional contacts with verified work emails tracked across these 337 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 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 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.