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London’s 101 Fastest Growing Network Security Startups

At Best Startup London we track over 100,000 London based startups and over 500,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and organisations we think deserve more appreciation than they are currently getting.

We’ve ranked the top 101 Network Security companies in London. The companies, startups and institutions listed in this article are all exceptional companies, well worth a follow. We have included links to their websites, socials and CrunchBase (if you’re interested in their financials).

We selected the organisations listed in this article based on:

  • Track record
  • Executive leadership
  • Market share
  • Innovation
  • ESG rating

Our Data – We source our data from OSINT (open source intelligence) and public directories such as CrunchbaseSemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.

Top Network Security Companies & Startups (London)


CyberSmart

FoundersJamie Akhtar, Mariella Thanner
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An automated end-to-end cyber security compliance platform that helps SMB’s.


Garrison Technology

FoundersDavid Garfield, Henry Harrison
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Garrison Technology is a cybersecurity firm that offers a secure remote browsing technology.


CybSafe

FoundersOz Alashe, Sean Lumley
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A behavioural security and data analytics platform helps people make better security decisions, and improve their security behaviour.


Bloc Ventures

FoundersBruce Beckloff, David Leftley
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Bloc Ventures is an early-stage Deep Tech investment company. Pitch to Bloc here: https://blocventures.com/pitching/


CyberOwl

FoundersSiraj Ahmed Shaikh
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CyberOwl offers an early warning system for cyber attacks through real-time monitoring of high value targets for malicious behavior.


Risk Ledger

FoundersDaniel Saul, Haydn Brooks
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Risk Ledger is the world’s most innovative vendor risk management platform, built on the model of a secure social network.


KYND

FoundersAndy Thomas
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KYND is a cyber risk start up.


Callsign

FoundersIan Welch, Zia Hayat
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Delivering digital trust through simple secure customer interactions


BitNinja.io

FoundersGeorge Egri, Viktoria Vereb
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Providing server security services worldwide


G4S

FoundersMarius Hogrefe
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G4S is an international security solutions group, focused on BPO sectors where security and safety risks are considered a strategic threat.


SIRP

FoundersFaiz Ahmad Shuja, Muhammad Omar Khan
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Risk-Based Security Orchestration, Automation & Response (SOAR) Platform


PixelPin

FoundersBrian Taylor, Geoff Anderson
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PixelPin builds a secure authentication system using pictures instead of passwords.


42Crunch

FoundersIsabelle Mauny, Jacques Declas, Philippe Leothaud
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42Crunch is an API Security platform, addressing the development, testing, and deployment security requirements of API infrastructure.


Cado Security Ltd

FoundersChristopher Doman, James Campbell
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Cado Security provides the cloud investigation platform that empowers security teams to respond to threats at cloud speed.


Messagenius

FoundersLuigi Fidelio, Simone Giacco
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Messagenius provides the secure enterprise messaging for smart, secure, and integrated internal communication among colleagues.


Q-Branch Labs

FoundersBozhidar Genev, Jim McCoy
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Cybersecurity protection for remote and work from home employees


Acqua Telecom

FoundersRenato Andrade
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MVNO and Telecom Consultancy, 5G Experts, Fintech Support, Mobile Financial Services.


Acunetix

FoundersNick Galea
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Aquinetix offers an automated tool that enables companies to scan their web apps to identify and resolve exploitable vulnerabilities.


Teneno

FoundersJean Salha, Nimit Shishodia
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Teneno is a leading provider of simple, secure and affordable networking-on-demand solutions for Small and Medium Sized Businesses.


Convo App

FoundersAmrit Johal, Jasneel Nagi, Praveen Reddy, Vishal Patel
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A sport social network where all fans can convo with one another!


drie Secure Systems

FoundersJeremy Suarez, Kalbir Sohi, Tom Van Neerijnen, Ulrike Eder
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Drie allows teams to rapidly develop and deploy applications to the cloud without compromising on security.


Fluency

FoundersIan Anderson, Sinead Mac Manus
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Fluency offers free online courses in SEO, digital marketing, and social media.


Cycell

FoundersThomas Sunderland
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Cycell is an early-stage specialist mobile network operator based in the United Kingdom.


Verity.io

FoundersDonald Jackson
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Certified digital documents stored on the blockchain.


CyLon

FoundersAlex van Someren, Grace Cassy, Jonathan Luff
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CyLon is the world’s leading cyber security accelerator and seed investment programme.


AppsPicket

FoundersKunal Sharma, Raghav Bhaskar
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Frictionless secure two factor authentication based on innovative cryptographic protocol.


Myel

FoundersSandra Platano, Thomas Chardin
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Myel is a community-powered content delivery network company.


RedHunt Labs

FoundersShubham MIttal, Sudhanshu Chauhan
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Attack Surface Management – NVADR [https://redhuntlabs.com/nvadr]


Cossack Labs

FoundersChris Hennings, Eugene Pilyankevich, Julian Swallow
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Cossack Labs provides reliable data security and cryptographic solutions for large enterprises, startups, and tech-savvy SMEs.


CyberSparta

FoundersChris Woods
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CyberSparta provides IT network solutions.


ControlPlane

FoundersAndrew Martin
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Cloud native consultancy, securing Kubernetes from supply-chain and runtime attacks with a zero trust, continuous security approach.


ShadowMap

FoundersYash Kadakia
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Digital Risk Protection – Attack Surface, Threat Intelligence, Data Leaks, Dark Web & Brand Protection.


Datrix

FoundersMahmood Chaudhri
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Datrix Ltd is a Smart Infrastructure and Cyber Security solutions provider company.


Deepnet Security

FoundersUnknown
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Deepnet Security is a vendor in Multi-Factor Authentication (MFA) and Identity & Access Management (IAM).


Fusion Global Capital

FoundersBobby Yerramilli-Rao, Charlie Newark-French, Fiorangelo Salvatorelli
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Fusion Global Capital is a growth-equity firm investing in b2b technology.


CSL DualCom

FoundersChris Brookes, Phil Hollett, Simon Banks
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CSL DualCom, based in the UK, provides dual signaling alarm systems and other security installations.


Actix

FoundersRob Dobson
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Actix delivers automated network performance engineering and network status management systems for wireless carriers.


TurgenSec

FoundersNathaniel Fried, P X
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R&D Focused Information Security.


DeepView

FoundersCatherine (Kitty) Parry
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A privacy-focused platform to monitor and archive business communications


Turnkey Consulting

FoundersRichard Hunt
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Turnkey Consulting is a world leader in Security, Controls and Governance, Risk and Compliance (GRC) consulting for SAP software.


Context Information Security

FoundersUnknown
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Context Information Security is a cybersecurity consultancy, specialising in assurance, technical security research.


Cyberseer

FoundersUnknown
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Cyberseer offers a 24×7 Managed Security Service (MSS) that fuses both machine learning and behavioral analytics.


UM Labs

FoundersBob Pike, Dean Bell, Peter Cox, Ray Glover
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UM-Labs R&D provides Real-Time Communications Cyber Security UOS (Unicus) – protects all Data in Transit and Motion, running on any cloud.


Trust Keith

FoundersUnknown
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Trust Keith combines real humans with technology to seamlessly manage your data protection.


Alert Fusion

FoundersUnknown
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AlertFusion improves operational efficiency by reducing the time it takes to close an alert.


TowerXchange

FoundersUnknown
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TowerXchange is an telecom tower industry.


Zerado

FoundersImogen Bunyard, Laura Bailey
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Zerado is a technology consulting and product development company.


ThreatAware

FoundersUnknown
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ThreatAware Monitoring, management and compliance software for your cyber security tools, people and processes in one easy to use dashboard.


Cybercorre

FoundersNaveen Vasudeva
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Cybercorre is a information & Cyber security advisory firm which aims to constructively disrupt the cyber and technology advisory.


Prime Networks

FoundersUnknown
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Prime Networks is an IT company that offers network security hardware and software services.


Top10VPN

FoundersAntonio Argiolas
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Top10VPN.com is a leading VPN (Virtual Private Network) review website. We provide unbiased reviews and advice about VPN services.


Noble

FoundersUnknown
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Noble develops innovative network cyber security applications using advanced AI-based technology.


CYBER1

FoundersUnknown
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CYBER1 is engaged in providing cyber resilience solutions and conducts its operations through physical presences.


Folio.ID

FoundersUnknown
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Folio.ID offers a portfolio of identification services for individuals, businesses, and governments.


Riversafe

FoundersUnknown
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Riversafe offers cyber security, analytics consulting, resource augmentation and data operations solutions.


Eramba

FoundersEsteban Ribicic
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Eramba is a web-application that helps open governance, risk and compliance solution.


Elasticito

FoundersUnknown
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Elasticito is an advisory firm and solution provider of cybersecurity automation technologies.


Medicare Network

FoundersChristopher Dean, Simon Black
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A cybersecurity and risk management company dedicated to solving and preventing the most sophisticated and targeted cyber-attacks.


CCleaner

FoundersUnknown
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CCleaner develops software tools for desktop, PCs, mobile, cloud, and corporate networks to run devices safe, fast, and fun to use.


Sensical

FoundersStefano Patacchiola MSyI and Ian Barry
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Sensical is an IT consultancy that specializes in the fields of networking, security, communication, cloud and managed IT services.


Protectimus

FoundersUnknown
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Cloud service of One Time Password generation.


Advanced Cyber Solutions

FoundersChris Payne
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Award Winning IT Security Solutions and Service Provider in Europe and the UK.


Digital Assurance

FoundersUnknown
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Digital Assurance develops a range of security testing, information assurance and security training products and services.


Universal Security Systems

FoundersUnknown
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USS provides high technology security solutions. It was founded in 1991 and is based in London, United Kingdom.


sept-02

FoundersUnknown
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SEP2 provides network, firewall, cloud solutions, and cyber security services.


Intelliment Security

FoundersEduardo Fernández León, Sergio Pozo
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Intelliment Security is a highly scalable network security policy automation that provides software defined security controller products.


Auriga Consulting

FoundersUnknown
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Auriga Consulting is a center of excellence in Cyber Security, Assurance and Monitoring Services.


Backup Systems

FoundersUnknown
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Backup Systems was founded in 2005 after years of creating software and services for large city banks.


Digital Devices

FoundersUnknown
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Digital Devices provides IT infrastructure and cloud services that include software deployments, data migrations, computing, and networking.


Netscylla Cyber Security Ltd

FoundersAlex Davies, Andrew Davies
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Netscylla is a start-up specialising in cyber security consultancy, both defending and simulating modern information security threats.


Cyber Mentor DoJo

FoundersDavid Tyler
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Cyber Security Education and Mentoring Platform


GRUPO INV

FoundersUnknown
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GRUPO INV is a firm that provides the best comprehensive security service.


Crydent | Cloud and Support Solutions

FoundersCameron Willer
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IT solutions and services provider, delivering 24/7 IT support, managed services, and modern cloud solutions to businesses across the UK.


Risk Perspective

FoundersUnknown
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Risk Perspective is a cyber security company that protects from financial fraud, secure sensitive assets, and maintain compliance.


Wem Technology Ltd

FoundersUnknown
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Managed IT, Cloud and Security Services


Bright Cyber

FoundersUnknown
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Bright Cyber provides a cyber resilience solution with primary reliance on security assurance.


Accordant Solutions

FoundersDavid Fardoe
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Accordant we understand the changing needs of business IT that help organizations optimize their IT strategy, enhance performance.


Psyphr

FoundersSteve Cochrane, Tristan Palmer
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Psyphr is a new technology company building data / cybersecurity solutions utilising advanced technologies.


K7 Computing UK

FoundersUnknown
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K7 Computing is a safe, anti-virus security program.


Zed One

FoundersUnknown
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Zed One is an IT support company that provides hardware, software, security, auditing, cloud backup, broadband, network security services.


Risk Crew

FoundersUnknown
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Risk Crew is a product-agnostic information security governance, risk, and compliance management consultancy.


Siondo

FoundersUnknown
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Siondo is a London-based software service (SaaS) vendor.


Hacker House

FoundersJennifer Arcuri, Matthew Hickey
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Hacker House provides offensive security solutions to the information security industries.


Platform365

FoundersUnknown
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Platform365 delivers professional and reliable, tailored IT Support and Business Solutions to businesses.


Ransom Release

FoundersUnknown
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Ransom Release is the simplest and quickest way to stay protected from today’s dangerous and unpredictable ransomware attacks.


Cyber Management Alliance

FoundersAmar Singh, Bal Rai
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Cyber Management Alliance provides network security, cyber security training courses, educational webinars, and consulting services.


VOID | International

FoundersButrint Komoni
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VOID | International – Advancing Availability and Security Worldwide


Nebulas Solutions Group

FoundersUnknown
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Nebulas Solutions Group is a British cybersecurity services firm.


Cyber Business Growth

FoundersUnknown
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Cyber Business Growth is a consulting agency that provides network security, sales consulting, and cyber security services.


Security Alliance

FoundersUnknown
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Security Alliance is an information security services company specialized in the provision of security testing and monitoring services.


H2O-Networks

FoundersUnknown
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H2O-Networks provide world-class technical support to their customers by answering tickets promptly.


Encom Conseil

FoundersUnknown
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Encom Conseil ​allow SMEs to improve performance thanks to innovative telephony and Internet access solutions.


VNP DIGITAL

FoundersKrish Revo
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Web Services, Networking


SiO4

FoundersAndrew Speakmaster
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SiO4 provides specialised advanced cyber threat intelligence services.


Fujitsu UK

FoundersUnknown
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Fujitsu UK provides IT products and services for the global marketplace including hardware, software and business solutions.


Moore ClearComm

FoundersUnknown
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Moore ClearComm specializes in data privacy, cyber security, business continuity, and information security solutions for organizations.


Depositit

FoundersUnknown
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Depositit specializes in cyber security solutions for SMB’s including advanced endpoint protection and secure offsite data backup & storage.


MYSecurityCenter

FoundersJanus R. Nielsen
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PC Security & PC Maintenance Software


Streym

FoundersUnknown
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Streym is an IT consultancy firm that provides network security, business telephony, virtualization, managed IT support and cloud services.


AFLEX

FoundersUnknown
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AFLEX provides network security, managed IT and consulting services.


Nova IT solutions

FoundersUnknown
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Nova IT Solutions provides outstanding and responsive client support and network services.

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