Ellie Horvath
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 Crunchbase, SemRush 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
| Founders | David Williams |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Arqit develops a quantum encryption platform.
G-Research
| Founders | Ben Leadsom, Chris Goddard, Jennifer Coyle Byrne |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
G-Research is a research and technology company that specializes in Quantitative Research and IT Infrastructure.
Wandera
| Founders | Eldar Tuvey, Roy Tuvey |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Wandera provides a unified cloud security solution to protect the modern workplace
Pimloc
| Founders | Simon Randall |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Pimloc’s deep learning platform allows organisations to automatically ingest, detect, classify and protect diverse image and video content.
CyberSmart
| Founders | Jamie Akhtar, Mariella Thanner |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
An automated end-to-end cyber security compliance platform that helps SMB’s.
Garrison Technology
| Founders | David Garfield, Henry Harrison |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Garrison Technology is a cybersecurity firm that offers a secure remote browsing technology.
CybSafe
| Founders | Oz Alashe, Sean Lumley |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
A behavioural security and data analytics platform helps people make better security decisions, and improve their security behaviour.
Bloc Ventures
| Founders | Bruce Beckloff, David Leftley |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Bloc Ventures is an early-stage Deep Tech investment company. Pitch to Bloc here: https://blocventures.com/pitching/
Tessian
| Founders | Edward Bishop, Thomas Adams, Tim Sadler |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.
CyberOwl
| Founders | Siraj Ahmed Shaikh |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
CyberOwl offers an early warning system for cyber attacks through real-time monitoring of high value targets for malicious behavior.
Sumsub
| Founders | Andrey Severiukhin, Jacob Sever, Peter Sever, Vyacheslav Zholudev |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Sumsub is an AI-based solution that automates identity verification and anti-fraud.
seedata.io
| Founders | Enrico Faccioli, Matt Holland |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Seedata.io is a cybersecurity platform that helps companies mitigate data leak incidents and crime threats.
HighQ
| Founders | Ajay Patel, Veenay Shah |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
HighQ empowers leading law firms and corporate legal teams to transform the way they work and deliver legal services.
Risk Ledger
| Founders | Daniel Saul, Haydn Brooks |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Risk Ledger is the world’s most innovative vendor risk management platform, built on the model of a secure social network.
Crypto Quantique
| Founders | Kumi Thiruchelvam, Patrick Camilleri, Shahram Mossayebi |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Crypto Quantique offers hardware based cyber-security solution for authentication and encryption in a wired local network.
SafeToNet
| Founders | Georgina Pursey, Jack Pursey, Richard Pursey, Sharon Pursey |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
SafeToNet makes the digital world safer for children to explore and enjoy.
Simudyne
| Founders | Justin Lyon |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Simudyne helps financial organisations to understand their world and make the best possible decisions.
Digital Catapult
| Founders | Jeremy Silver, Neil Crockett |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Digital Catapult drives early adoption of advanced digital technologies to grow the country’s economy.
BoxyHQ
| Founders | Carlos Samame, Deepak Prabhakara |
| Follow | Website, Crunchbase, Twitter, Github, Linkedin |
BoxyHQ helps developers automate product security, and it provides low-code APIs to enable enterprise compliant security
Post-Quantum
| Founders | Andersen Cheng, CJ Tjhai, Martin Tomlinson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Post-Quantum is a world-leader in quantum-safe encryption, blockchain and digital identity
KYND
| Founders | Andy Thomas |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
KYND is a cyber risk start up.
Chainvine
| Founders | Niclas Wigstrom, Oliver Oram, Rajiv Mathur |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Next Generation Enterprise Systems / Identity Access Management (IAM) / Technology Providers Blockchain
Flashpoint
| Founders | Alex Konoplyasty, Michael Szalontay |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Flashpoint is an international asset management firm investing in tech businesses.
Intruder
| Founders | Chris Wallis, David Robinson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Intruder is a cloud-based vulnerability scanner that finds cyber security weaknesses in your external infrastructure.
iProov
| Founders | Andrew Bud |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
iProov develops face authentication technology for online identity verification by global banks and governments.
Privitar
| Founders | Gerard Buggy, Jason du Preez, John Taysom |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Privitar offers a data privacy platform that protect their customers’ sensitive personal data and to deliver comprehensive data privacy.
Callsign
| Founders | Ian Welch, Zia Hayat |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Delivering digital trust through simple secure customer interactions
Mimecast
| Founders | Neil Murray, Peter Bauer |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Mimecast is a SaaS-based email management platform enabling companies to administer business communications and data.
eXate
| Founders | Peter Lancos, Sonal Rattan |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
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
| Founders | Ben Prouty, Carl August Ameln, Jan Vanhoutte |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Shepper collects data on physical assets for businesses using the power of technology and people
Moonshot
| Founders | George Hawkins, Vidhya Ramalingam |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Moonshot is a data analytics company, which designs new technology to identify and mitigate online harms.
OutThink
| Founders | Flavius Plesu |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cybersecurity human risk management platform (SaaS)
Goldilock
| Founders | Anthony Hasek, Jarrod Epps, Stephen Kines |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Data and Critical Infrastructure Security
Palqee Technologies
| Founders | Andre Quintanilha, Sabrina Palme |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
We build intuitive Privacy & Data Governance technologies that create trusted relationships between businesses and people.
Ravelin
| Founders | Leonard Austin, Mairtin O’Riada, Martin Sweeney, Nick Lally, Stephen Whitworth |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Ravelin is a smart fraud detection and prevention platform that helps companies stop online payment fraud.
BitNinja.io
| Founders | George Egri, Viktoria Vereb |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Providing server security services worldwide
AimBrain
| Founders | Alesis Novik, Andrius Sutas |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
AimBrain helps organisations detect and prevent fraud. Anomaly detection, behavioural biometrics & 3 active biometric authentication modules
Corax
| Founders | Jonathan Pope, Tom Beale |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cyber risk intelligence platform providing data and modelling on the cyber exposure of millions of companies worldwide.
Encode
| Founders | Harry Eliopoulos, Panos Dimitriou |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Enorasys Security Analytics enables continuous cyber situational awareness to address advanced persistent threats (APTs).
TiG Data Intelligence
| Founders | Adam Maurice, Des Lekerman |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
TIG is a provider of cloud services, unified communications, and infrastructure solutions.
My1Login
| Founders | Michael Newman |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
My1Login is a next generation Identity and Access Management solutions for Enterprise.
Heliocor
| Founders | Angel Marquez, Owen Hall, Vikas Tripathi |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Heliocor is a regulatory technology company.We are building a global anti fraud ecosystem based on our Robolitics and Dokstor SaaS products.
Cyscale
| Founders | Andrei Milas, Manuela Ticudean, Ovidiu Cical |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cloud Native – Automated Cloud Security – scalable Products and Services for Cloud Cybersecurity, DevSecOps and Cloud Security Management.
HeleCloud
| Founders | Alexander Kolev, Dobromir Todorov, Duncan McIntyre, Paul McCarthy, Stefan Bumov |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
HeleCloud provides strategic technology consultancy, engineering and managed cloud services on the AWS Platform
ATAR Labs
| Founders | Burak Dayıoğlu, Gokhan Say, Murat Tora |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
ATAR Labs builds next generation SOAR platforms. ATAR helps SOCs become more vigilant and effective while helping them achieve more.
AppSec Phoenix
| Founders | Alfonso Eusebio, Berlinda Kugara, Dimitri Calianno, Francesco Cipollone, Stefano Longhi |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
SaaS XSPN – Next Generation Application & Cloud Security Posture Management ASPM + CSPM
Claranet
| Founders | Ben White, Charles Nasser |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Claranet is an expert in modernising and running critical applications and infrastructure.
swIDch
| Founders | Chang-Hun Yoo |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
swIDch is an information technology company that offers secure authentication through dynamic codes.
G4S
| Founders | Marius Hogrefe |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
G4S is an international security solutions group, focused on BPO sectors where security and safety risks are considered a strategic threat.
Gospel Technology
| Founders | Ian Smith |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Gospel Technology is an enterprise data security platform, providing inter-enterprise data for secure & ethical business collaboration.
SIRP
| Founders | Faiz Ahmad Shuja, Muhammad Omar Khan |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Risk-Based Security Orchestration, Automation & Response (SOAR) Platform
Shard X
| Founders | Navaho de Wet, Yaniv Neu-Ner |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Shard X develops technology for crypto custodians, in order to boost the security of its services.
Syntonym
| Founders | Batuhan Özcan, Emre Cavunt |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Syntonym Anonymize visual data in a GDPR-compliant way to protect people’s privacy.
Strike
| Founders | Santiago Rosenblatt |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Securing worldwide enterprises by connecting them with top cybersecurity professionals through Continuous Pentesting.
PixelPin
| Founders | Brian Taylor, Geoff Anderson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
PixelPin builds a secure authentication system using pictures instead of passwords.
AssetVault
| Founders | Farid Haque, Vishnu Chundi |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
AssetVault allows customers to catalogue all their physical and digital assets in one secure register.
Panaseer
| Founders | Charaka Goonatilake, Mike MacIntyre, Nik Whitfield, Sophie Harrison |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Panaseer helps businesses make informed, risk-based security decisions.
42Crunch
| Founders | Isabelle Mauny, Jacques Declas, Philippe Leothaud |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
42Crunch is an API Security platform, addressing the development, testing, and deployment security requirements of API infrastructure.
Drone Defence
| Founders | Richard Gill |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Supporting a sustainable future where drones change the way we view, interact with, and move around our world.
SeeQuestor Ltd
| Founders | William Addison |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
SeeQuestor is designed to increase the speed at which police and security teams analyse video as part of investigations.
Angee Technologies Ltd.
| Founders | Lukas Stibor, Miroslav Chmelka, Tomas Turek |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Home IoT Platform to protect your home and privacy
Armour Communications
| Founders | Andy Lilly, David Holman |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Armour Communications provides government-grade encryption for secure communications.
RankedRight
| Founders | Kristan Bullett, Peter Yeo, Thomas MacKenzie |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
RankedRight is a vulnerability triage platform that prioritises security based on customer defined rules.
Trust Payments
| Founders | Kobus Paulsen |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Trust Payments is a global unified payments group for global pay-in, pay-out and customer journey technologies.
Begin Capital
| Founders | Alexey Menn, Ruslan Sarkisyan |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Begin Capital is the international venture capital fund investing across the globe with a focus on Europe
Guardara
| Founders | Mitali Rakhit, Zsolt Imre |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Guardara focuses on fuzz testing, a software testing technique for discovering coding errors and security loopholes.
Operational Solutions
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Operational Solutions is a company that provides tailored Subject Matter Expertise to the Defence, Security and Aerospace industry.
Cynomi
| Founders | David Primor, Roy Azoulay |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cynomi addresses a critical gap in mid-market cyber protection – creating and executing a cyber and compliance strategy .
Cado Security Ltd
| Founders | Christopher Doman, James Campbell |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cado Security provides the cloud investigation platform that empowers security teams to respond to threats at cloud speed.
TrustElevate
| Founders | Alena Lapukhova, Michal Haris, Rachel O’Connell |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Trust Elevate solves the problem of age verification and parental consent for young adults and children in online transactions.
CertiVox
| Founders | Brian Spector |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
CertiVox is a Web 2.0 security firm developing information security infrastructure as a service and encryption SaaS-based solutions.
Cursor Insight
| Founders | Bence Golda, Tamas Zelczer |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cursor Insight is a software development company with many years of experience in human movement analysis.
Nettoken
| Founders | Charlotte Slingsby, Ela Neagu, Simonetta d’Ottaviano |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
The control panel for your digital identity!
MindLink Software
| Founders | Howard Travers, Joseph Do |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
MindLink provides business critical collaboration enabled through Enterprise Chat.
Keyless
| Founders | Andrea Carmignani, Fabian Eberle |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Pioneering privacy-preserving cloud-native biometric authentication to enable businesses adopt zero-trust passwordless authentication.
Qredo
| Founders | Anthony Foy, Brian Spector |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Qredo is a platform that provides secure and fast movement of digital assets.
Superscript
| Founders | Annabel Mekelenkamp, Ben Rose, Cameron Shearer |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Superscript provides business insurance designed specifically to meet the fast-changing needs of small businesses.
OWLR Technologies
| Founders | Chris Mark Jenkins, Gonçalo Catarino, Sanford Dickert |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
User-friendly software which makes complex home security cameras easy-to-use, more intelligent and safer for all.
Messagenius
| Founders | Luigi Fidelio, Simone Giacco |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Messagenius provides the secure enterprise messaging for smart, secure, and integrated internal communication among colleagues.
Q-Branch Labs
| Founders | Bozhidar Genev, Jim McCoy |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cybersecurity protection for remote and work from home employees
Phorm
| Founders | Mark Lyle Schneider |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Phorm is a personalization technology company making content and advertising more relevant to consumers by utilizing ISP data.
Acqua Telecom
| Founders | Renato Andrade |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
MVNO and Telecom Consultancy, 5G Experts, Fintech Support, Mobile Financial Services.
Veridu
| Founders | Casper Urhammer, Emma Lindley, Flávio Heleno, Ian Green, Rasmus Groth, Steen Tromholt |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Veridu offers a range of frictionless, consent-driven social identity solutions to reduce fraud in the global internet economy.
SenseOn
| Founders | David Atkinson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
SenseOn’s self-driving cyber defense platform automates the process of threat detection, investigation and response.
Veridium
| Founders | Hector Hoyos |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Veridium is a leading provider of strong digital authentication platform
Egress Software
| Founders | John Goodyear, Neil Larkins, Tony Pepper |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Egress is a software company that specializes in human layer security designed to prevent accidental and intentional data breaches.
tru.ID
| Founders | Eric Nadalin, Paul McGuire |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
tru.ID is reinventing mobile authentication for today’s world through a modern developer platform.
Cloudreach
| Founders | James Monico, Pontus Noren |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Cloudreach is a Global cloud enabler with extensive experience across all industries, workloads and use cases.
Torsion Information Security
| Founders | Peter Bradley |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Confident Data Access Control – Get control of who has access to what, why and when. Secure, Compliant, Efficient.
Iceni Labs
| Founders | Alexander Giles, Dylan Banks |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Mission Critical Science. We develop new technologies and work with our partners to commercialise innovations and inventions.
Meterian
| Founders | Bruno Bossola, Vivian Dufour |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Meterian is the simple and straightforward way to assess how secure are your software components.
Seers
| Founders | Adnan Zaheer |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Seers is the leading privacy and consent management platform. Already saved 50k+ companies globally from data privacy and protection fines.
TeskaLabs
| Founders | Ales Teska, Vladimira Teskova |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
TeskaLabs is a mobile application security provider.
Tribe Payments
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Tribe is a payments technology company providing ‘end to end’ services in the payments space.
Acunetix
| Founders | Nick Galea |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Aquinetix offers an automated tool that enables companies to scan their web apps to identify and resolve exploitable vulnerabilities.
iDeals
| Founders | Yevhen Sergeev |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
iDeals is a global provider of secure business collaboration software.
Kryotech
| Founders | Jean-Brunel Webb-Benjamin |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Kryotech is an App Development company.
ISTARI
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
ISTARI a global cybersecurity platform dedicated to helping create a digitally resilient future for the businesses it works with.
Oxford BioChronometrics
| Founders | Adrian Neal, David Scheckel, Jeff Martinez, Sander Kouwenhoven, William Scheckel |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Armed w/Ox Bio Human Recognition Technology (HRT) advertisers reach their targets of real people with real purchasing power for real growth.
