Company lists · Data refreshed August 2026

Top 25 5g cybersecurity providers based in the United Kingdom

RevenueBase identified 232 5g cybersecurity providers headquartered in the United Kingdom as of August 2026 and tracks 9,656 professional contacts across them, including 4,473 with verified work emails and 1,604 with mobile numbers. London is the largest hub.

This list covers 5g cybersecurity providers 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 August 30, 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 Match evidence on every row Refreshed Aug 30, 2026 86% judged on-target in blind review
232Companies
9,656Contacts tracked
4,473Verified emails
1,604Mobile numbers
Unlock all 232 companies Free signup · no credit card · 500 free credits

The 25 largest 5g cybersecurity providers based in the United Kingdom

Ranked by team size
Top 25 of 232 5g cybersecurity providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names 5g cybersecurity providers: 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.
#CompanyHeadquartersEmployeesContacts
1
SophosPartial evidence
Abingdon, United Kingdom5,001-10,0004,963

“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.”

Source: company website · checked Aug 30, 2026
2
Enea ABPartial evidence
Belfast, United Kingdom501-1,000638

“Enea is a global specialist in advanced telecom and cybersecurity software, with a vision to make the world’s communications safer and more efficient.”

Source: company website · checked Aug 30, 2026
3
EverfoxIndirect evidence
London, United Kingdom1,001-5,000635

“Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.”

Source: company website · checked Aug 30, 2026
4
WithsecurePartial evidence
London, United Kingdom501-1,000614

“WithSecure™ is Europe's cybersecurity partner of choice.”

Source: company website · checked Aug 30, 2026
5
Inseego CorpPartial evidence
London, United Kingdom501-1,000412

“Inseego Corp.(Nasdaq: INSG) is a leader in the 5G fixed wireless access and MiFi hotspot market.”

Source: company website · checked Aug 30, 2026
6
BridewellIndirect evidence
Edinburgh, United Kingdom201-500304

“Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…”

Source: company website · checked Aug 30, 2026
7
CyberfortIndirect evidence
Thatcham, United Kingdom51-200160

“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 Aug 30, 2026
8
Cipher سايڤرPartial evidence
London, United Kingdom201-500135

“At Cipher, we're redefining digital security as the premier cybersecurity leader in the Middle East.”

Source: company website · checked Aug 30, 2026
9
Khipu NetworksIndirect evidence
Fleet, United Kingdom51-200129

“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 Aug 30, 2026
10
Foresite CybersecurityIndirect evidence
Farnborough, United Kingdom51-200100

“As the world becomes more connected, our lives and businesses are more vulnerable.”

Source: company website · checked Aug 30, 2026
11
BecryptPartial evidence
London, United Kingdom51-20069

“With a heritage of creating National Cyber Security Centre certified products, Becrypt, a Leonardo company, is a trusted provider of endpoint cybersecurity software solutions.”

Source: company website · checked Aug 30, 2026
12
Eset UKIndirect evidence
Bournemouth, United Kingdom51-20066

“We help businesses and individuals stay protected in an increasingly complex digital world.”

Source: company website · checked Aug 30, 2026
13
OnwaveIndirect evidence
West Malling, United Kingdom51-20063

“Onwave is a trusted provider of connectivity, networking services and geofencing solutions for businesses.”

Source: company website · checked Aug 30, 2026
14London, United Kingdom51-20059

“Garrison is a London-based cybersecurity company founded in 2014 by David Garfield (CEO) and Henry Harrison (Chief Scientist).”

Source: company website · checked Aug 30, 2026
15
HexegicIndirect evidence
London, United Kingdom51-20052

“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 Aug 30, 2026
16
Adarma SecurityIndirect evidence
Edinburgh, United Kingdom201-50052

“We are Adarma, independent leaders in detection and response services.”

Source: company website · checked Aug 30, 2026
17
Satisnet, A Gamma CompanyIndirect evidence
Luton, United Kingdom51-20046

“Established in 2004 (acquired by Gamma in 2023), Satisnet, a Gamma company is a pedigree-proven cyber security services and solutions specialist with a fully UK-based 24x7x365 SOC.”

Source: company website · checked Aug 30, 2026
18
Cyberjeet PVT LTDIndirect evidence
London, United Kingdom11-5040

“91 9008215621) We at Cyberjeet Pvt Ltd provide Cyber Security, Network Security, Cloud migration, software development, IT Consulting, IT Network Security, System Integration &…”

Source: company website · checked Aug 30, 2026
19
X-Net Services LTDIndirect evidence
Christchurch, United Kingdom11-5036

“X-Net (Services) Ltd Formerly known as Kimcell Ltd, incorporating the X-Net, e-mango and Datacenta Hosting brands.”

Source: company website · checked Aug 30, 2026
20
Salus CyberIndirect evidence
Cheltenham, United Kingdom11-5031

“Salus is a provider of world-class cyber security services, enabling our clients to identify and manage their cyber risks proactively and effectively.”

Source: company website · checked Aug 30, 2026
21
ITB LTDPartial evidence
Eynsham, United Kingdom11-5028

“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 Aug 30, 2026
22
EncodeIndirect evidence
London, United Kingdom51-20025

“Encode is now part of Obrela Security Industries collectively delivering cutting edge Cyber Security Services, empowering organizations to better protect against cyber threats.”

Source: company website · checked Aug 30, 2026
23
PentesecIndirect evidence
Peterborough, United Kingdom51-20024

“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 Aug 30, 2026
24
Protos NetworksIndirect evidence
West Chester, United Kingdom11-5023

“Protos Networks is an award-winning network and cyber security services specialist based in the North West of England.”

Source: company website · checked Aug 30, 2026
25
4secure LTDPartial evidence
Northampton, United Kingdom11-5022

“4Secure is a trusted provider of software defined, cross-network/cross-domain cybersecurity solutions for commercial, government and defence.”

Source: company website · checked Aug 30, 2026

Showing 25 of 232 5g cybersecurity providers based in the United Kingdom

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5g cybersecurity providers based in the United Kingdom at a glance

As of Aug 30, 2026
1-10Median size (employees)
LondonLargest hub · 91 HQs
1,604Contacts with mobile numbers
Aug 30, 2026Data refreshed

Companies by employee count

1-10
131
11-50
69
51-200
17
201-500
6
501-1,000
6
1,001-5,000
1
5,001-10,000
2

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 5g cybersecurity providers, 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 “5g cybersecurity providers”. 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 5g cybersecurity providers, 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, 4,473 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 August 30, 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.

5g cybersecurity providers by metro

Frequently asked

How many 5g cybersecurity providers are there based in the United Kingdom?

RevenueBase identified 232 5g cybersecurity providers headquartered in the United Kingdom as of August 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 5g cybersecurity providers?

London leads with 91 headquartered companies, followed by Manchester (10) 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 4,473 verified decision-maker contacts tracked across these 232 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 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.