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Top London Security Companies (80)

Aerospace • Artificial Intelligence • Hardware • Robotics • Security • Software • Defense
8 Offices
4,500 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.


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.


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.


Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
19 Offices
40,000 Employees

Improving the future and protecting lives is an ambitious mission, but it’s what we do. As a leading aerospace, defense, and security company, we work together to deliver a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. How we work, is rooted in purpose – a purpose to protect those who protect us, to unite our community of colleagues and customers, and to drive forward the growth and development of our exceptional team members. It's where purpose connects.


Cloud • Information Technology • Security • Social Impact • Software
3 Offices
383 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.


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.


Cloud • Information Technology • Security • Software • Cybersecurity
9 Offices
3,900 Employees

Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company on a mission to help build a better Internet. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business. Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.


Artificial Intelligence • Big Data • Retail • Security • Social Impact • Software • Business Intelligence
4 Offices
212 Employees

We have over 33,000 retail stores and 50,000 retail users using the Auror platform globally. We have a common goal - that is to connect people and organisations with timely intel to proactively combat highly Organized Retail Crime (ORC) groups who are reselling billions of dollars in merchandise. The impact that shoplifting has on profits, customer experience and in-store safety has reached epidemic levels globally, and we are here to partner with retailers and law enforcement to ultimately build safer communities. We are a global organisation with teams across New Zealand, Australia, United States, Canada and the United Kingdom. Despite the geographical locations and time zone differences, we strive to maintain a collaborative work culture and do our best to avoid silos. We do this by creating a talent selection process that is inclusive and reflective of our culture and what’s important to us.


Cloud • Information Technology • Security • Software
6 Offices
597 Employees

Software-driven digital innovation is essential for competing in today's market, and the foundation of this innovation is code. However, there are widespread cracks in this foundation – lines of bad, insecure, and poorly written code – that manifests into tech debt, security incidents, and availability issues. With Sonar, developers and organizations are empowered to create quality, secure code confidently, whether written by humans or generated with AI. The Sonar solution, SonarQube, helps prevent code quality and security issues from reaching production, amplifies developers' productivity in concert with AI assistants, and improves the developer experience with streamlined workflows. Sonar analyzes all code, regardless of who writes it—your internal team or genAI—resulting in more secure, reliable, and maintainable software. At Sonar, we are driven by a deep belief in our people, a commitment to excellence, and an unwavering dedication to delivery. We operate as a united group where our collective success is the sum of each individual's contributions. Our company culture is driven by the values of CODE: Committed, Obsessed, Deliberate & Effective. This mindset reflects our culture of creativity, collaboration, and pride in the work we do. Rooted in the open-source community, Sonar’s solutions support over 30 programming languages, frameworks, and infrastructure technologies. Today, Sonar is used by 7M+ developers and 400K organizations worldwide, including the DoD, Microsoft, NASA, MasterCard, Siemens, and T-Mobile. Sonar is headquartered in Geneva, Switzerland with additional offices in Austin, Texas; Annecy, France; Bochum, Germany, London, England; and Singapore. The company is rapidly growing with over 600 employees! Join us in our mission to solve the trillion-dollar challenge of bad code!


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.


Healthtech • Security • Software • Cybersecurity
7 Offices
957 Employees

For over 20 years, we’ve been redefining how life- and mission-critical industries enable, control, and monitor digital identities to deliver fast access, improve security, and ensure compliance. Customer success is our DNA, which is why we’re trusted by the most prominent healthcare and enterprise organizations in 45 countries.


Artificial Intelligence • Cloud • Information Technology • Security • Software • Cybersecurity • Data Privacy
4 Offices
330 Employees

We are a cybersecurity software company. Coro’s AI enabled Modular Cybersecurity Platform is the only one in the industry specifically designed to provide Mid-Market customers with scalable and affordable “enterprise grade” protection for all of their priority threat vectors. Our platform has aided us in being able to raise $100 million in Series D funding in March of 2024, bringing the total funding raised to $255 million over the last 24 months, and acquiring our first company, Privatise. The funding is primarily being used to enhance the Coro Cybersecurity SaaS platform and for additional headcount growth, as Coro continues to expand globally. Looking to IPO in the next few years, it is a great time to join a fast-growing pre-IPO organization.


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

Every day, the world gets more digital thanks to tens of millions of developers building the future faster than ever. But with exponential growth comes exponential risk, as outnumbered security teams struggle to secure mountains of code. This is where Snyk (pronounced “sneak”) comes in. Snyk is a developer security platform that makes it easy for development teams to find, prioritize, and fix security vulnerabilities in code, dependencies, containers, and cloud infrastructure — and do it all right from the start.


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.


Cloud • Hardware • Security • Software
16 Offices
2,000 Employees

Verkada is the world’s largest cloud-based B2B physical security platform, offering a seamless blend of tech and safety. With six product lines — video security cameras, access control, environmental sensors, alarms, workplace systems, and intercoms — all integrated on one cloud platform, Verkada is designed for simplicity and scalability. Our real-time insights help organizations keep their spaces safe and comfortable while taking swift action to minimize security risks, workplace hassles, and costly inefficiencies. Founded in 2016 and backed by over $460M in funding, we’ve grown fast, with 16 offices spread across four continents, 2,000+ employees, and 26,000+ customers in 85+ countries — including 82 of the Fortune 500. Created by Stanford computer scientists and security experts, alongside Cisco Meraki’s co-founder and COO Hans Robertson, Verkada calls San Mateo, CA home. We also have offices in Salt Lake City, Tampa, Phoenix, Austin, London, Sydney, Taiwan, New York, Philadelphia, Toronto, Mexico City, Seattle, Tokyo, and Korea.


Artificial Intelligence • Hardware • Information Technology • Security • Software • Cybersecurity • Big Data Analytics
23 Offices
21,000 Employees

Motorola Solutions is solving for safer. We build and connect technologies to help protect people, property and places. Our solutions enable the collaboration between public safety agencies and enterprises that’s critical for a proactive approach to safety and security. Learn more about how we’re solving for safer communities, safer schools, safer hospitals, safer businesses – safer everywhere.


Cloud • Information Technology • Security • Software
3 Offices
5,847 Employees

F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device. F5 (NASDAQ: FFIV) powers applications from development through their entire life cycle, across any multi-cloud environment, so our customers – enterprise businesses, service providers, governments, and consumer brands—can deliver differentiated, high-performing, and secure digital experiences.


Security
London, England
49 Employees

With over a decade of experience in identity & access management, identity governance and application security, we have learned that successful delivery of these projects depends on how well the scale and complexities are managed. Our unique step by step approach to focus on simplifying the delivery and solutions has worked every time we have applied it to variety of businesses and technology stacks. We follow the ideology of "How you eat an elephant - By cutting it into small pieces"​. We believe that by taking one right step at a time, great mountains can be conquered.


Cloud • Machine Learning • Security • Software • Cybersecurity
2 Offices
781 Employees

Telesign provides continuous trust to leading global enterprises by connecting, protecting, and defending their digital identities. Telesign verifies over five billion unique phone numbers a month, representing half of the world’s mobile users, and provides critical insight into the remaining billions. The company’s powerful AI and extensive data science deliver identity with a unique combination of speed, accuracy, and global reach. Telesign solutions prevent fraud, secure communications, and enable the digital economy by allowing companies and customers to engage with confidence.


Information Technology • Security • Software • Consulting
5 Offices
1,916 Employees

Relentless protection. Resilient world. Mimecast (NASDAQ: MIME) was born in 2003 with a focus on delivering relentless protection. Each day, we take on cyber disruption for our tens of thousands of customers around the globe; always putting them first, and never giving up on tackling their biggest security challenges together. We are the company that built an intentional and scalable design ideology that solves the number one cyberattack vector – email. We continuously invest to thoughtfully integrate brand protection, security awareness training, web security, compliance and other essential capabilities. Mimecast is here to help protect large and small organizations from malicious activity, human error and technology failure; and to lead the movement toward building a more resilient world. Learn more about us at www.mimecast.com.