Company lists · Data refreshed September 2026

Top 22 Healthcare network security companies based in the United Kingdom

Name: Healthcare network security 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 3, 2026 206 companies tracked

RevenueBase identified 206 healthcare network security companies headquartered in the United Kingdom as of September 2026 and tracks 8,064 professional contacts across them, including 4,044 with verified work emails and 1,099 with mobile numbers. London is the largest hub.

This list covers healthcare network security 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

206Companies

8,064Contacts tracked

4,044Verified emails

1,099Mobile numbers

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The 22 largest healthcare network security companies based in the United Kingdom

Ranked by team size

Top 22 of 206 healthcare network security companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names healthcare network security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SophosIndirect evidence	Abingdon, United KingdomHQ checked Sep 3, 2026	5,001-10,000	4,963
	“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: company website · checked Sep 3, 2026
2	CyberfortPartial evidence	Thatcham, United KingdomHQ checked Sep 3, 2026	51-200	160
	“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…” Source: company website · checked Sep 3, 2026
3	Khipu NetworksStrong evidence	Fleet, United KingdomHQ checked Sep 3, 2026	51-200	129
	“KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Source: company website · checked Sep 3, 2026
4	Bulletproof Cyber SecurityIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	118
	“Bulletproof is now part of WorkNest Secure.” Source: company website · checked Sep 3, 2026
5	HexegicIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	52
	“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: company website · checked Sep 3, 2026
6	Adarma SecurityIndirect evidence	Edinburgh, United KingdomHQ checked Sep 3, 2026	201-500	52
	“We are Adarma, independent leaders in detection and response services.” Source: company website · checked Sep 3, 2026
7	CyberisPartial evidence	Tewkesbury, United KingdomHQ checked Sep 3, 2026	11-50	35
	“Cyberis are pioneers in customer-focussed information security.” Source: company website · checked Sep 3, 2026
8	Barrier NetworksIndirect evidence	Glasgow, United KingdomHQ checked Sep 3, 2026	11-50	33
	“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…” Source: company website · checked Sep 3, 2026
9	defense.comPartial evidence	Stevenage, United KingdomHQ checked Sep 3, 2026	51-200	32
	“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Source: company website · checked Sep 3, 2026
10	Citation CyberPartial evidence	Bailrigg, United KingdomHQ checked Sep 3, 2026	11-50	30
	“Cyber security can feel overwhelming.” Source: company website · checked Sep 3, 2026
11	ITB LTDIndirect evidence	Eynsham, United KingdomHQ checked Sep 3, 2026	11-50	28
	“ITB is a leading supplier of Cybersecurity solutions and services, supported by our strong partnerships with world-class IT Solution providers.” Source: company website · checked Sep 3, 2026
12	J2 MsspIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	11-50	27
	“J2 Software had humble beginnings and large aspirations.” Source: company website · checked Sep 3, 2026
13	PentesecPartial evidence	Peterborough, United KingdomHQ checked Sep 3, 2026	51-200	24
	“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…” Source: company website · checked Sep 3, 2026
14	AMR CybersecurityPartial evidence	Cheltenham, United KingdomHQ checked Sep 3, 2026	11-50	23
	“AMR CyberSecurity delivers next generation cyber security services to assist organisations across a wide variety of sectors in understanding potential threats and effectively…” Source: company website · checked Sep 3, 2026
15	Blackfoot CybersecurityIndirect evidence	Welwyn Garden City, United KingdomHQ checked Sep 3, 2026	11-50	23
	“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.” Source: company website · checked Sep 3, 2026
16	Vambrace CybersecurityIndirect evidence	Leeds, United KingdomHQ checked Sep 3, 2026	11-50	23
	“Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Source: company website · checked Sep 3, 2026
17	Addvantage Digital SolutionsPartial evidence	Bolton, United KingdomHQ checked Sep 3, 2026	11-50	21
	“ADDVantage Technologies partner with you to create digital solutions for all your healthcare needs.” Source: company website · checked Sep 3, 2026
18	ClearswiftIndirect evidence	Berkshire, United KingdomHQ checked Sep 3, 2026	201-500	19
	“Why Clearswift?” Source: company website · checked Sep 3, 2026
19	Ithealth U.K. LTDIndirect evidence	Nottingham, United KingdomHQ checked Sep 3, 2026	11-50	16
	“ITHealth provides proven and trusted cybersecurity and access management solutions to NHS organisations.” Source: company website · checked Sep 3, 2026
20	Loughtec IT Cyber SecurityIndirect evidence	Omagh, United KingdomHQ checked Sep 3, 2026	51-200	16
	“LoughTec specialises in IT and cybersecurity solutions, focusing on proactive preventative and reactive measures to exceed both the current and also the new and ever-evolving…” Source: company website · checked Sep 3, 2026
21	CyberhiveIndirect evidence	Newbury, United KingdomHQ checked Sep 3, 2026	11-50	16
	“CyberHive protects the most valued organisations, their people data, and assets, with patented technology that is simple, secure and performant.” Source: company website · checked Sep 3, 2026
22	B10secIndirect evidence	Cheltenham, United KingdomHQ checked Sep 3, 2026	11-50	16
	“B10SEC is a company specialising in cybersecurity and data protection services and solutions, headquartered in Gloucestershire, UK, with branches in Portugal, Brazil and Mexico.” Source: company website · checked Sep 3, 2026

Showing 22 of 206 healthcare network security companies based in the United Kingdom

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Healthcare network security companies based in the United Kingdom at a glance

As of Sep 3, 2026

1-10Median size (employees)

LondonLargest hub · 81 HQs

1,099Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

113

11-50

51-200

201-500

501-1,000

5,001-10,000

Verified emails by last verification

0–30

31–60

334

61–90

2,322

90–180

1,289

180+

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 healthcare network security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “healthcare network security companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among healthcare network security 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 an evidence 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, 4,044 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 3, 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.

Healthcare network security companies by metro

Healthcare network security companies in London81

Frequently asked

How many healthcare network security companies are there based in the United Kingdom?

RevenueBase identified 206 healthcare network security 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?

Sophos, headquartered in Abingdon, tops this list with the largest team on record.

Which city has the most healthcare network security companies?

London leads with 81 headquartered companies, followed by Manchester (6) and Cheltenham (5).

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 4,044 verified decision-maker contacts tracked across these 206 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 3, 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.