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Top London Security Companies (50)

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Hardware • Information Technology • Security • Software • Cybersecurity • Conversational AI
6 Offices
3,000 Employees

Meraki is a Greek word meaning “something done with soul, creativity, or love.” With this name as our mantra, we’re building a welcoming workplace that attracts eclectic, curious, purposeful people who unite to ignite our customers’ passions. Together, we create powerful, simple technology with the potential to change everything.


Aerospace • Artificial Intelligence • Hardware • Robotics • Security • Software • Defense
8 Offices
1,400 Employees

Anduril is a defense products company. Unlike most defense companies, we don’t wait for our customers to tell us what they need. We identify problems, privately fund our R&D and sell finished products off the shelf. Ideas are turned into deployed capabilities in months, not years.


Cloud • Information Technology • Security • Social Impact • Software
3 Offices
363 Employees

AlertMedia helps organizations protect their people and businesses through all phases of an emergency. Our award-winning threat intelligence, emergency communication, and travel risk management solutions help companies of all sizes identify, respond to, and recover from critical events faster and more confidently. Our team of in-house intelligence analysts and meteorologists work around the clock to monitor thousands of data sources around the world, providing our customers and employees with verified, credible information to protect them from impending threats. AlertMedia has been recognized both nationally and locally for its exceptional company culture, most recently being named to Inc. Magazine’s Best Workplaces list for 2023. We were also named to Forbes’ list of America’s Best Startup Employers for two consecutive years, Austin Business Journal’s Best Places to Work for six consecutive years, and Built In Austin’s 100 Best Places to Work in Austin. Located in the heart of downtown Austin in the "smartest building in the city", AlertMedia inspires and invests in our employees through continuous developmental experiences, including Career Month, community volunteering, mentorship programs, Employee Resource Groups, and weekly "Tuesday Lunches" where the company comes together to learn about and discuss any business updates. AlertMedia also facilitates a robust internship program, working with universities (including HBCUs), non-profit organizations like Hiring Our Heroes, and similar partners to invest in the future of our diverse workforce.


Artificial Intelligence • Cloud • Sales • Security • Software • Cybersecurity • Data Privacy
6 Offices
2,461 Employees

SailPoint is the leader in identity security for the cloud enterprise. Our identity security solutions secure and enable thousands of companies worldwide, giving our customers unmatched visibility into the entirety of their digital workforce, ensuring workers have the right access to do their job – no more, no less.


Artificial Intelligence • Cloud • Mobile • Security • Software
3 Offices
145 Employees

Our mission is to secure voice with trust, identity and intelligence. We're protecting people from spam and fraud calls, connecting businesses with their customers, and helping carriers secure their networks for all.


Artificial Intelligence • Information Technology • Machine Learning • Security • Software • Cybersecurity • Generative AI
8 Offices
850 Employees

Exabeam is a global cybersecurity leader that delivers AI-driven security operations. High-integrity data ingestion, powerful analytics, and workflow automation power the industry’s most advanced self-managed and cloud-native security operations platform for threat detection, investigation, and response (TDIR). With a history of leadership in SIEM and UEBA, and a legacy rooted in AI, Exabeam empowers global security teams to combat cyberthreats, mitigate risk, and streamline security operations. Learn more at www.exabeam.com.


Information Technology • Security • Cybersecurity
9 Offices
3,300 Employees

Cloudflare, Inc. is on a mission to help build a better Internet. Cloudflare’s suite of products protect and accelerate any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare have all web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was awarded by Reuters Events for Global Responsible Business in 2020, named to Fast Company's Most Innovative Companies in 2021, and ranked among Newsweek's Top 100 Most Loved Workplaces in 2022.


Cloud • Information Technology • Security • Software
2 Offices
230 Employees

LogicGate® is a global leader in transformative risk management and compliance solutions. Our award-winning Governance, Risk, and Compliance (GRC) platform, Risk Cloud®, is built with usability in mind, including a no-code interface and graph-database management, enabling customers to understand and navigate risks through a centralized framework. With an unwavering commitment to fostering business resilience in dynamic landscapes, LogicGate is actively driving innovation and creating strategic advantages for risk management in the business environment.


Artificial Intelligence • Cloud • Information Technology • Security • Software • Cybersecurity • Data Privacy
10 Offices
1,000 Employees

Snyk leads the category of developer security, whereby development, security, and operations teams effectively collaborate to integrate security throughout the entire software development lifecycle. This approach has disrupted the legacy cybersecurity market, transitioning the industry away from slow, burdensome cybersecurity approaches. Snyk is the trusted partner of the world’s most innovative enterprises for modern application security, empowering every organization to develop fast and stay secure. We leverage AI-powered security intelligence and automation to reliably secure code from the start—extending the unique shift-left security they pioneered, to built-in governance and holistic risk management—so that companies can unite development and AppSec teams to unleash developer productivity, reduce risk, and accelerate software delivery as they embrace DevOps, cloud, and now AI. The only way to deliver secure applications at the speed of modern, AI-powered development is to bring security and developers together. This means giving developers real-time security tools that integrate directly into their existing tools and workflows, and giving security teams the controls and insights to view applications holistically. When security becomes a seamlessly integrated part of the development lifecycle, applications can be delivered quickly and securely.


Security • Appliances • Manufacturing
Crawley, West Sussex, GB
80 Employees

About Chemigraphic: • We deliver seamless outsourced electronics manufacturing, from concept through to end of life. We operate in a number of sectors, including: o Medical o Industrial Controls o Power o Security • We deliver excellent performance and quality across the entire manufacturing process, taking products from concept to ramp using innovative, automated techniques to ensure stand-out results. • Everything we do is governed by robust processes, designed to meet each customer’s requirements and deliver optimal efficiency and consistently excellent results. • Our market-leading expertise and excellence in component sourcing, product assembly and fulfilment make us the ideal partner for our customers, regardless of their requirement. • We combine intelligent thinking with the use of the most advanced assembly equipment on the market to deliver seamless manufacturing fulfilment, often in the face of rapid timescales and challenging complexity. • We deliver whatever our customers need, from PCBAs through to the most complex electromechanical systems.


Security
London, GB
116 Employees

CybSafe measures and tracks security behaviour to improve security controls and awareness activities. Follow for security awareness, behaviour and culture updates, useful reads and job postings.


Blockchain • Information Technology • Security • Software • Consulting
London, England, GB
13 Employees

Our technology helps data and compliance leaders confidently manage the expanding volumes of data their organisations generate - in ways that reduce complexity and cost, whilst increasing trust and insight. LogLocker, now available on the Azure Marketplace, solves compliance challenges by providing a robust log management platform for the data and AI economy. LogLocker is powered by FALKOR, the enterprise blockchain platform created by ByzGen, and trusted by businesses like Atos, Rolls-Royce and GSK, businesses who need a proven solution for sharing, storing and tracking sensitive data. FALKOR is a mature and feature-rich blockchain platform that provides LogLocker’s underlying private blockchain network and allows customers access to a highly secure and market-tested compliance solution designed for future demands.


Security • Software • Business Intelligence
London, England, GB
36 Employees

Gathering global investigative data doesn't have to be complicated, time-consuming or expensive. We've designed the first one-stop platform that simplifies the sourcing and management of due diligence, intelligence and global data. With a vetted global community and streamlined workflows, finally there is a tech-enabled solution that supports the full spectrum of investigative research, even at scale. Ground Truth Intelligence - global due diligence and investigations without the friction.


Security • Software • Cybersecurity
London, England, GB
20 Employees

The SIRP SOAR platform makes it easy for security teams to quickly realize value through our free integrations and automation playbooks that let you take your security investigations from manual to lightning speed in no time. SIRP provides a powerful yet simple solution that applies risk scoring and context to accelerate your investigation and incident response time, instantly increase your team’s efficiency, and gain invaluable metrics to manage and continually improve your security operations performance. Unlike other SOAR solutions, our platform removes the complexities and makes your life easier with a fully supported, white glove experience. Our team empowers you to stop wasting time building integrations and spend more time stopping threats by providing unlimited integrations and playbook automations—at no extra cost. That’s our peace of mind commitment to you. And, when you’re ready to advance your security operations beyond automation, the platform unifies your case management, threat intelligence, vulnerability management, and asset management, so your team has a single view to manage the complete incident response lifecycle.


Information Technology • Security • Software
Hayes, GB
81 Employees

TRACKER is the UK's number one supplier of vehicle tracking services. With over a million systems installed to date, our award-winning products ensure our customers have complete peace of mind. In these challenging times you need to choose a supplier who is going to be there for you in the long term. TRACKER has the best disaster recovery arrangements in the industry – you can be sure that TRACKER will be supporting your business now and in the years to come.


Information Technology • Security • Software
London, England, GB
23 Employees

ThreatSpike Labs provides the first end-to-end fully managed security service for companies of all sizes. ThreatSpike's software defined security platform takes only a few hours to install after which time all activity on the network is monitored by a team of highly trained analysts and penetration testers. Companies are alerted in real time to any active threats, as well as weaknesses that could be used by attackers at a later time. ThreatSpike's unique platform allows companies to respond to identified risks and instantly implement protective controls such as web filtering, data loss prevention and network zoning. A unique per seat license model free companies to implement security protections when they require them, rather than being hindered by budget cycles. ThreatSpike provide free proof of concept security assessments which are estimated to have protected against millions of pounds in damages for those companies who have tried them


Security • Software • Cybersecurity
10 Offices
10,357 Employees

Fortinet develops and sells cybersecurity solutions.


Cloud • Security • Software • Cybersecurity
City of London, GB
30 Employees

BitNinja provides 3E Linux server protection for large hosting providers and small businesses equally. The three E stands for: effective, effortless, and enjoyable. Effective because of our unique Defense Network that uses the power of the Ninja Community. Every BitNinja-protected server worldwide shares attack information with each other, resulting in a more intelligent and stronger protection shield by every single assault. Effortless because it is fast and easy to install, so your server protection is up and running in no time. It requires no maintenance, just keep running in the background and protecting your and your customer’s servers while you can concentrate on other aspects of your business with peace of mind. Enjoyable because you can take joy in the benefits of BitNinja, like the increased server capacity caused by the significant drop in the server load. Furthermore, you can easily manage all the modules and features on the unified dashboard and check how the software catches malicious traffic in real-time. Join our Defense Network for free today!


Information Technology • Security • Software • Cybersecurity
London, England, GB
200 Employees

Are you brave enough to click this link? http://bit.ly/2xdmVRw Malware and data loss: the web can be a dangerous place. You could just block access to everything except the trusted cloud services that the business relies on – great for security, but terrible for users. Ultra-secure browsing solves the problem. Security and enablement in a single package. Silicon Assured Video Isolation (Garrison SAVI®) is a Secure Remote Browsing technology that means risky web content is never processed on the user’s endpoint device. Designed with the user at its heart, patented Garrison SAVI® technology provides hardware-enforced secure remote browsing for enterprise customers. The Garrison SAVI® Isolation Appliance lives in the cloud or the data centre, doing dangerous web browsing for you. Garrison’s unique approach ensures a great user experience is maintained even when deployed across the largest of enterprises, whilst delivering unparalleled security. Click on every link, browse the web with confidence. Visit www.garrison.com for more information


Mobile • Security • Software
Guildford, Surrey, GB
20 Employees

We help organisations solve their password and access pains. Our passwordless MFA and our Secure Browser for mobile ensures that user passwords can never be compromised. Using biometrics, public key cryptography and the secure hardware on smart devices, we improve usability for employees and customers whilst reducing the risk of data breaches, financial fraud and fines for non-compliance. Leading organisations use idenprotect to improve security, meet regulatory mandates and reduce complexity and costs. Why idenprotect? Because life is complicated enough.