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London’s 99 Fastest Growing 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 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 Security Companies & Startups (London)


Arqit Limited

FoundersDavid Williams
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Arqit develops a quantum encryption platform.


G-Research

FoundersBen Leadsom, Chris Goddard, Jennifer Coyle Byrne
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G-Research is a research and technology company that specializes in Quantitative Research and IT Infrastructure.


Wandera

FoundersEldar Tuvey, Roy Tuvey
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Wandera provides a unified cloud security solution to protect the modern workplace


Pimloc

FoundersSimon Randall
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Pimloc’s deep learning platform allows organisations to automatically ingest, detect, classify and protect diverse image and video content.


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/


Tessian

FoundersEdward Bishop, Thomas Adams, Tim Sadler
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Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.


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.


Sumsub

FoundersAndrey Severiukhin, Jacob Sever, Peter Sever, Vyacheslav Zholudev
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Sumsub is an AI-based solution that automates identity verification and anti-fraud.


seedata.io

FoundersEnrico Faccioli, Matt Holland
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Seedata.io is a cybersecurity platform that helps companies mitigate data leak incidents and crime threats.


HighQ

FoundersAjay Patel, Veenay Shah
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HighQ empowers leading law firms and corporate legal teams to transform the way they work and deliver legal services.


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.


Crypto Quantique

FoundersKumi Thiruchelvam, Patrick Camilleri, Shahram Mossayebi
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Crypto Quantique offers hardware based cyber-security solution for authentication and encryption in a wired local network.


SafeToNet

FoundersGeorgina Pursey, Jack Pursey, Richard Pursey, Sharon Pursey
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SafeToNet makes the digital world safer for children to explore and enjoy.


Simudyne

FoundersJustin Lyon
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Simudyne helps financial organisations to understand their world and make the best possible decisions.


Digital Catapult

FoundersJeremy Silver, Neil Crockett
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Digital Catapult drives early adoption of advanced digital technologies to grow the country’s economy.


BoxyHQ

FoundersCarlos Samame, Deepak Prabhakara
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BoxyHQ helps developers automate product security, and it provides low-code APIs to enable enterprise compliant security


Post-Quantum

FoundersAndersen Cheng, CJ Tjhai, Martin Tomlinson
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Post-Quantum is a world-leader in quantum-safe encryption, blockchain and digital identity


KYND

FoundersAndy Thomas
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KYND is a cyber risk start up.


Chainvine

FoundersNiclas Wigstrom, Oliver Oram, Rajiv Mathur
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Next Generation Enterprise Systems / Identity Access Management (IAM) / Technology Providers Blockchain


Flashpoint

FoundersAlex Konoplyasty, Michael Szalontay
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Flashpoint is an international asset management firm investing in tech businesses.


Intruder

FoundersChris Wallis, David Robinson
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Intruder is a cloud-based vulnerability scanner that finds cyber security weaknesses in your external infrastructure.


iProov

FoundersAndrew Bud
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iProov develops face authentication technology for online identity verification by global banks and governments.


Privitar

FoundersGerard Buggy, Jason du Preez, John Taysom
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Privitar offers a data privacy platform that protect their customers’ sensitive personal data and to deliver comprehensive data privacy.


Callsign

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


Mimecast

FoundersNeil Murray, Peter Bauer
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Mimecast is a SaaS-based email management platform enabling companies to administer business communications and data.


eXate

FoundersPeter Lancos, Sonal Rattan
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eXate unlocks the value of production data by allowing you to share it safely, because data privacy is at the heart of everything we do.


Shepper

FoundersBen Prouty, Carl August Ameln, Jan Vanhoutte
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Shepper collects data on physical assets for businesses using the power of technology and people


Moonshot

FoundersGeorge Hawkins, Vidhya Ramalingam
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Moonshot is a data analytics company, which designs new technology to identify and mitigate online harms.


OutThink

FoundersFlavius Plesu
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Cybersecurity human risk management platform (SaaS)


Goldilock

FoundersAnthony Hasek, Jarrod Epps, Stephen Kines
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Data and Critical Infrastructure Security


Palqee Technologies

FoundersAndre Quintanilha, Sabrina Palme
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We build intuitive Privacy & Data Governance technologies that create trusted relationships between businesses and people.


Ravelin

FoundersLeonard Austin, Mairtin O’Riada, Martin Sweeney, Nick Lally, Stephen Whitworth
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Ravelin is a smart fraud detection and prevention platform that helps companies stop online payment fraud.


BitNinja.io

FoundersGeorge Egri, Viktoria Vereb
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Providing server security services worldwide


AimBrain

FoundersAlesis Novik, Andrius Sutas
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AimBrain helps organisations detect and prevent fraud. Anomaly detection, behavioural biometrics & 3 active biometric authentication modules


Corax

FoundersJonathan Pope, Tom Beale
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Cyber risk intelligence platform providing data and modelling on the cyber exposure of millions of companies worldwide.


Encode

FoundersHarry Eliopoulos, Panos Dimitriou
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Enorasys Security Analytics enables continuous cyber situational awareness to address advanced persistent threats (APTs).


TiG Data Intelligence

FoundersAdam Maurice, Des Lekerman
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TIG is a provider of cloud services, unified communications, and infrastructure solutions.


My1Login

FoundersMichael Newman
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My1Login is a next generation Identity and Access Management solutions for Enterprise.


Heliocor

FoundersAngel Marquez, Owen Hall, Vikas Tripathi
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Heliocor is a regulatory technology company.We are building a global anti fraud ecosystem based on our Robolitics and Dokstor SaaS products.


Cyscale

FoundersAndrei Milas, Manuela Ticudean, Ovidiu Cical
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Cloud Native – Automated Cloud Security – scalable Products and Services for Cloud Cybersecurity, DevSecOps and Cloud Security Management.


HeleCloud

FoundersAlexander Kolev, Dobromir Todorov, Duncan McIntyre, Paul McCarthy, Stefan Bumov
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HeleCloud provides strategic technology consultancy, engineering and managed cloud services on the AWS Platform


ATAR Labs

FoundersBurak Dayıoğlu, Gokhan Say, Murat Tora
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ATAR Labs builds next generation SOAR platforms. ATAR helps SOCs become more vigilant and effective while helping them achieve more.


AppSec Phoenix

FoundersAlfonso Eusebio, Berlinda Kugara, Dimitri Calianno, Francesco Cipollone, Stefano Longhi
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SaaS XSPN – Next Generation Application & Cloud Security Posture Management ASPM + CSPM


Claranet

FoundersBen White, Charles Nasser
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Claranet is an expert in modernising and running critical applications and infrastructure.


swIDch

FoundersChang-Hun Yoo
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swIDch is an information technology company that offers secure authentication through dynamic codes.


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.


Gospel Technology

FoundersIan Smith
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Gospel Technology is an enterprise data security platform, providing inter-enterprise data for secure & ethical business collaboration.


SIRP

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


Shard X

FoundersNavaho de Wet, Yaniv Neu-Ner
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Shard X develops technology for crypto custodians, in order to boost the security of its services.


Syntonym

FoundersBatuhan Özcan, Emre Cavunt
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Syntonym Anonymize visual data in a GDPR-compliant way to protect people’s privacy.


Strike

FoundersSantiago Rosenblatt
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Securing worldwide enterprises by connecting them with top cybersecurity professionals through Continuous Pentesting.


PixelPin

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


AssetVault

FoundersFarid Haque, Vishnu Chundi
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AssetVault allows customers to catalogue all their physical and digital assets in one secure register.


Panaseer

FoundersCharaka Goonatilake, Mike MacIntyre, Nik Whitfield, Sophie Harrison
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Panaseer helps businesses make informed, risk-based security decisions.


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.


Drone Defence

FoundersRichard Gill
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Supporting a sustainable future where drones change the way we view, interact with, and move around our world.


SeeQuestor Ltd

FoundersWilliam Addison
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SeeQuestor is designed to increase the speed at which police and security teams analyse video as part of investigations.


Angee Technologies Ltd.

FoundersLukas Stibor, Miroslav Chmelka, Tomas Turek
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Home IoT Platform to protect your home and privacy


Armour Communications

FoundersAndy Lilly, David Holman
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Armour Communications provides government-grade encryption for secure communications.


RankedRight

FoundersKristan Bullett, Peter Yeo, Thomas MacKenzie
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RankedRight is a vulnerability triage platform that prioritises security based on customer defined rules.


Trust Payments

FoundersKobus Paulsen
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Trust Payments is a global unified payments group for global pay-in, pay-out and customer journey technologies.


Begin Capital

FoundersAlexey Menn, Ruslan Sarkisyan
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Begin Capital is the international venture capital fund investing across the globe with a focus on Europe


Guardara

FoundersMitali Rakhit, Zsolt Imre
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Guardara focuses on fuzz testing, a software testing technique for discovering coding errors and security loopholes.


Operational Solutions

FoundersUnknown
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Operational Solutions is a company that provides tailored Subject Matter Expertise to the Defence, Security and Aerospace industry.


Cynomi

FoundersDavid Primor, Roy Azoulay
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Cynomi addresses a critical gap in mid-market cyber protection – creating and executing a cyber and compliance strategy .


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.


TrustElevate

FoundersAlena Lapukhova, Michal Haris, Rachel O’Connell
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Trust Elevate solves the problem of age verification and parental consent for young adults and children in online transactions.


CertiVox

FoundersBrian Spector
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CertiVox is a Web 2.0 security firm developing information security infrastructure as a service and encryption SaaS-based solutions.


Cursor Insight

FoundersBence Golda, Tamas Zelczer
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Cursor Insight is a software development company with many years of experience in human movement analysis.


Nettoken

FoundersCharlotte Slingsby, Ela Neagu, Simonetta d’Ottaviano
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The control panel for your digital identity!


MindLink Software

FoundersHoward Travers, Joseph Do
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MindLink provides business critical collaboration enabled through Enterprise Chat.


Keyless

FoundersAndrea Carmignani, Fabian Eberle
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Pioneering privacy-preserving cloud-native biometric authentication to enable businesses adopt zero-trust passwordless authentication.


Qredo

FoundersAnthony Foy, Brian Spector
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Qredo is a platform that provides secure and fast movement of digital assets.


Superscript

FoundersAnnabel Mekelenkamp, Ben Rose, Cameron Shearer
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Superscript provides business insurance designed specifically to meet the fast-changing needs of small businesses.


OWLR Technologies

FoundersChris Mark Jenkins, Gonçalo Catarino, Sanford Dickert
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User-friendly software which makes complex home security cameras easy-to-use, more intelligent and safer for all.


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


Phorm

FoundersMark Lyle Schneider
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Phorm is a personalization technology company making content and advertising more relevant to consumers by utilizing ISP data.


Acqua Telecom

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


Veridu

FoundersCasper Urhammer, Emma Lindley, Flávio Heleno, Ian Green, Rasmus Groth, Steen Tromholt
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Veridu offers a range of frictionless, consent-driven social identity solutions to reduce fraud in the global internet economy.


SenseOn

FoundersDavid Atkinson
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SenseOn’s self-driving cyber defense platform automates the process of threat detection, investigation and response.


Veridium

FoundersHector Hoyos
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Veridium is a leading provider of strong digital authentication platform


Egress Software

FoundersJohn Goodyear, Neil Larkins, Tony Pepper
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Egress is a software company that specializes in human layer security designed to prevent accidental and intentional data breaches.


tru.ID

FoundersEric Nadalin, Paul McGuire
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tru.ID is reinventing mobile authentication for today’s world through a modern developer platform.


Cloudreach

FoundersJames Monico, Pontus Noren
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Cloudreach is a Global cloud enabler with extensive experience across all industries, workloads and use cases.


Torsion Information Security

FoundersPeter Bradley
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Confident Data Access Control – Get control of who has access to what, why and when. Secure, Compliant, Efficient.


Iceni Labs

FoundersAlexander Giles, Dylan Banks
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Mission Critical Science. We develop new technologies and work with our partners to commercialise innovations and inventions.


Meterian

FoundersBruno Bossola, Vivian Dufour
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Meterian is the simple and straightforward way to assess how secure are your software components.


Seers

FoundersAdnan Zaheer
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Seers is the leading privacy and consent management platform. Already saved 50k+ companies globally from data privacy and protection fines.


TeskaLabs

FoundersAles Teska, Vladimira Teskova
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TeskaLabs is a mobile application security provider.


Tribe Payments

FoundersUnknown
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Tribe is a payments technology company providing ‘end to end’​ services in the payments space.


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.


iDeals

FoundersYevhen Sergeev
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iDeals is a global provider of secure business collaboration software.


Kryotech

FoundersJean-Brunel Webb-Benjamin
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Kryotech is an App Development company.


ISTARI

FoundersUnknown
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ISTARI a global cybersecurity platform dedicated to helping create a digitally resilient future for the businesses it works with.


Oxford BioChronometrics

FoundersAdrian Neal, David Scheckel, Jeff Martinez, Sander Kouwenhoven, William Scheckel
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Armed w/Ox Bio Human Recognition Technology (HRT) advertisers reach their targets of real people with real purchasing power for real growth.

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