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20 Best London Cybersecurity Companies

Looking for a good cybersecurity company in London? Discover the top 20 London cybersecurity companies leading digital security in the heart of the UK.

In the bustling heart of London, cyber threats silently stalk the digital alleyways. This lurking danger often catches businesses off guard, leaving them exposed in this rapidly evolving IT Security London landscape. The importance of comprehensive endpoint security and active intrusion detection is like the whispering wind – it's always there, but we often fail to hear it.

Too many firms find themselves scrambling, trying to keep pace with the advancing digital threats. Despite maintaining basic firewall protection, they grapple with advanced cyber risks. The struggle is real, and the vulnerability is palpable.

Here's where the heralded London cybersecurity firms enter the fray with their high-caliber, all-encompassing cybersecurity solutions. These titans in the cyber realm offer a spectrum of services, standing as bulwarks against digital invasion. Stick with us as we unravel the top 20 cybersecurity companies in London – your vanguards in the complex world of cybersecurity. It's time to navigate these intricate waters together.

1. Eden Data

Step into the world of Eden Data, where we transform cybersecurity from a daunting task into an exciting journey. We navigate the intricate webs of cybersecurity threats with unmatched expertise and precision. Imagine having a team of cyber guardians, elite professionals trained in the art of digital defense, dedicated to protecting your business. And the best part? This high-level protection doesn't come with a hefty price tag. We've cast off the shackles of traditional hourly rates and embraced an affordable monthly subscription model instead.

Curious about who these cyber guardians are? Click here to meet the team and learn more about the experts who will be safeguarding your digital world.

Our cybersecurity toolkit is extensive and bespoke. It all starts with risk analysis, identifying and mapping potential threats lurking in your digital space's shadows. Our information security planning charts a secure path, guiding your business away from potential pitfalls. And when it comes to security compliance, we're the bilingual guides you need, helping you navigate the often confusing language of regulatory bodies.

Eager to learn about our pricing? Check out our Pricing Plan to discover just how affordable top-tier cybersecurity can be.

We stand as your shield in the cloud with our cloud security service. Our security audits are akin to regular health check-ups, ensuring your business systems are always performing at their peak. We're also always on high alert with our threat vulnerability management, ready to steer your business clear of any digital black holes.

Ready to secure your digital realm? Contact us today for a safer digital future.

  • Headquarters: Austin, TX ( serving London)
  • Founded: 2021
  • Specialization: Cybersecurity Consulting Services

2. ReliaQuest

ReliaQuest is a London-based cybersecurity company that provides cyber situational awareness to help organizations protect against cyber threats. The company's SearchLight service offers a comprehensive view of an organization's digital footprint and the profile of its potential attackers. This service continuously monitors for digital risks beyond the boundary of an organization, identifying cyber threats, data leakage, and reputational risks. ReliaQuest provides actionable threat intelligence, context, remediation options, and automated takedown capabilities to enable organizations to minimize risks and respond effectively to threats.

  • Headquarters: London, United Kingdom
  • Founded: 2019
  • Website Address: www.reliaquest.com
  • Contact: (800) 925-2159
  • Address: Columbus Building, Level 67 Westferry Circus London E14 4HD
  • Specialization: Cyber Situational Awareness

3. Tessian

Tessian is a cybersecurity company based in London that has developed a machine-intelligent email security platform to automatically prevent security threats. These threats include misaddressed emails, data loss, and non-compliance. Tessian's platform uses machine learning to understand normal email communication patterns and behaviors. This enables it to automatically identify email security threats in real time, eliminating the need for human review or manual intervention. The company’s mission is to secure the human layer of organizations by protecting individual employees from inbound threats and preventing data exfiltration.

  • Headquarters: London, United Kingdom
  • Founded: 2013
  • Website: www.tessian.com
  • Contact: +44 20 8611 1066
  • Address: 3 Finsbury Ave Fl 3, London, Greater London, EC2M 2PA, United Kingdom
  • Specialization: Email Security

4. Deep Secure

Deep Secure, headquartered in London, provides innovative cybersecurity solutions designed to protect against content threats. The company's threat removal platform offers a unique, transformational approach to cybersecurity. Instead of trying to identify and block threats, Deep Secure's technology transforms the content, ensuring that any hidden threats are removed while preserving the business value of the data. This approach provides a level of security that goes beyond traditional threat detection and offers a way to achieve zero-trust content security.

  • Headquarters: London, United Kingdom
  • Founded: 2010
  • Email: info@deep-secure.com
  • Website: www.deep-secure.com
  • Contact: +44 (0)1684 892831
  • Address: 131 Finsbury Pavement, London, Greater London, EC2A 1NT, United Kingdom
  • Specialization: Content Threat Removal

5. CyberSmart

CyberSmart is a London-based cybersecurity company that offers a platform designed to automate implementation, certification, and compliance with cybersecurity standards. The platform continuously identifies security weaknesses, provides guidance on how to fix them, and documents everything for compliance purposes. CyberSmart's approach simplifies the process of achieving and maintaining compliance with standards such as Cyber Essentials and ISO 27001, making it easier for organizations to protect their data and demonstrate their commitment to cybersecurity.

  • Headquarters: London, United Kingdom
  • Founded: 2016
  • Email: hello@cybersmart.co.uk
  • Website: cybersmart.co.uk
  • Contact: +4 0 207 993 6990
  • Address: 68 Hanbury St, London, Essex, E1 5JP, United Kingdom
  • Specialization: Cybersecurity Compliance

6. Panaseer

Panaseer is a cybersecurity company based in London that provides continuous control monitoring to businesses. The platform gives businesses a comprehensive view of their assets and shows how well they're being protected. Panaseer's platform uses automated data processing and an advanced analytics engine to provide insights into the security status of an organization's IT assets. This enables organizations to identify gaps in their security controls and take proactive steps to improve their cybersecurity posture.

  • Headquarters: London, United Kingdom
  • Founded: 2014
  • Email: info@panaseer.com
  • Website: panaseer.com
  • Contact: +44 20 3026 9847
  • Address: Ashcombe Court, Woolsack Way, Surrey GU7 1LQ, UK
  • Specialization: Continuous Controls Monitoring

7. Glasswall

Glasswall is a cybersecurity company that provides organizations with unique protection against file-based threats. Many of the world's leading organizations trust Glasswall's patented deep-file inspection, remediation, sanitization, and document reconstruction products. The company's innovative approach ensures safe, visually identical files while ensuring all threats are eliminated.

  • Headquarters: London, United Kingdom
  • Founded: 2005
  • Email: www.glasswall.com
  • Website: panaseer.com
  • Contact: +44 20 3814 3890
  • Address: 8 Devonshire Square, London EC2M 4PL, UK
  • Specialization: File-based Threat Protection

8. SenseOn

SenseOn offers a unique and innovative AI platform for cyber defense. The SenseOn platform provides organizations with a unique way of detecting threats across their digital estate. By understanding the 'normal' behavior of each user and device, SenseOn can spot subtle deviations indicative of a threat, even in the noise of a busy network.

  • Headquarters: London, United Kingdom
  • Founded: 2017
  • Email: info@senseon.io
  • Website: www.senseon.io
  • Contact: +44 (0)20 3773 1566
  • Address: 8 St James's Sq, London, Greater London, SW1Y 4JU, United Kingdom
  • Specialization: AI Cyber Defense

9. Featurespace

Featurespace is a world leader in risk prevention and fraud detection. The company's adaptive behavioral analytics technology uses machine learning to understand the behavior of each individual within a network, enabling organizations to detect and prevent fraud in real time.

  • Headquarters: London, United Kingdom
  • Founded: 20084
  • Email: info@featurespace.com
  • Website: www.featurespace.com
  • Contact: +44 1223 345940
  • Address: Suite 2, Ravenscroft House 61 Regent Street Cambridge, CB2 1AB United Kingdom
  • Specialization: Fraud Detection and Risk Prevention

10. Callsign

Callsign is a cybersecurity company that provides AI-driven intelligence-driven authentication solutions. The company's Intelligence Driven Authentication (IDA) solution enables businesses to deliver seamless and secure customer experiences across multiple channels.

  • Headquarters: London, United Kingdom
  • Founded: 2012
  • Email: info@callsign.com
  • Website: www.callsign.com
  • Address: London, 8th floor, One Bartholomew Close, United Kingdom
  • Specialization: Intelligence-Driven Authentication

11. Darktrace

Darktrace is a leading autonomous cyber defense platform that uses AI to self-learn and self-defend networks. Over 3,000 organizations utilize the company's technology, which is modeled after the human immune system, to guard against attacks to the cloud, email, IoT, networks, and industrial systems.

  • Headquarters: Cambridge, United Kingdom
  • Founded: 2013
  • Website: darktrace.com
  • Phone: +1 866 300 1261
  • Email: sales@darktrace.com
  • Address: Maurice Wilkes Building, St John's Innovation Park, Cowley Road, Cambridge Cambridge CB4 0DS United Kingdom
  • Specialization: Artificial Intelligence

12. BullGuard

BullGuard is a London-based cybersecurity company that provides robust, layered protection against all types of malware, such as phishing attempts and trojans. BullGuard's award-winning security suite includes a range of features, including a custom-built secure browser, a home network scanner, and a powerful game booster to optimize CPU performance.

  • Headquarters: London, United Kingdom
  • Founded: 2002
  • Website: www.bullguard.com
  • Email: mail@bullguard.com
  • Address: Tower 42 25 Old Broad St, London, Greater London, EC2N 1HN, United Kingdom
  • Specialization: Internet Security

13. BeyondTrust

BeyondTrust, formerly known as Avecto, is a cybersecurity software company that believes security can be synonymous with user freedom. BeyondTrust's Defendpoint software elegantly combines the three core pillars of cybersecurity: privilege management, application control, and content isolation, providing a proactive, pragmatic approach to security.

  • Headquarters: London, United Kingdom
  • Founded: 2008
  • Website: www.beyondtrust.com
  • Phone: +1-877-826-6427
  • Email: info@beyondtrust.com
  • Address: 11695 Johns Creek Pkwy Ste 200, Johns Creek, Georgia, 30097, United States
  • Specialization: Cybersecurity Software

14. Egress

Egress Software Technologies is a forward-thinking cloud-based software security company. Egress assists businesses in protecting unstructured data in order to satisfy legal requirements and increase corporate efficiency. The AI-powered platform of the firm analyses and reports on user behavior, avoiding human-activated data breaches before they occur.

  • Headquarters: London, United Kingdom
  • Founded: 2007
  • Website: www.egress.com
  • Phone: +44(0)20 3973 1333
  • Email: support@egress.com
  • Address: 1 Old Street Yard Old Street White Collar Factory 12TH Fl, London, Greater London, EC1Y 8AF, United Kingdom
  • Specialization: Cloud-based Software Security

15. Clearswift

Clearswift is a cybersecurity company that provides advanced threat protection and enterprise-grade security. Clearswift's products are designed to prevent data loss, manage insider threats, guard against ransomware, and protect against other cyber threats. Thousands of organizations worldwide rely on them to protect their important information, allowing them to safely communicate and promote business success.

  • Headquarters: London, United Kingdom
  • Founded: 1982
  • Website: www.clearswift.com
  • Phone: +44 (0) 118 903 8903
  • Email: info@fortra.com
  • Address: 1310 Waterside Arlington Business Park Theale, RG7 4SA United Kingdom
  • Specialization: Advanced Threat Protection

16. Cylon

Cylon operates as a cybersecurity accelerator that supports early-stage startups in the cybersecurity field. The company provides startups with the tools and support they need to grow and succeed. This includes everything from capital to coaching and a network of influential contacts. Cylon's unique approach to cybersecurity makes it a key player in the London cybersecurity scene.

  • Headquarters: London, United Kingdom
  • Founded: 2015
  • Website: www.cylonventures.com
  • Email: hello@cylonventures.com
  • Address: 9 Thorney Leys Park, Witney, Oxfordshire, OX28 4GE
  • Specialization: Cybersecurity Accelerator

17. iProov

iProov is a world leader in spoof-resistant, biometric facial verification. The company's technology ensures that an online user is the right person, a real person, and is authenticating right now. This defends against identity theft and unauthorized access, providing a secure and effortless user experience.

  • Headquarters: London, United Kingdom
  • Founded: 2011
  • Website: www.iproov.com
  • Phone: +44 (0)2079932379
  • Email: enquiries@iproov.com
  • Address: 10 York Rd, London, Greater London, SE1 7ND, United Kingdom
  • Specialization: Biometric Facial Verification

18. CyberOwl

CyberOwl provides an early-warning system for cyber-physical attacks. The company's technology uses a probabilistic framework to systematically aggregate weak indicators of an attack to provide a risk-prioritized view. This allows for more timely and contextualized decision-making.

  • Headquarters: London, United Kingdom
  • Founded: 2016
  • Website: cyberowl.io
  • Phone: +44 7930219430
  • Email: info@cyberowl.io
  • Address: 60 Gracechurch St, London, Greater London, EC3V 0HR, United Kingdom
  • Specialization: Early Warning System for Cyber-Physical Attacks

19. Salt Security

Salt Security safeguards APIs, which are at the heart of every SaaS, online, mobile, microservices, and IoT application. The API Protection Platform from the firm is the industry's first patented solution for preventing the next generation of API assaults through behavioral protection. Salt Security was created by former members of Israel's top cybersecurity team.

  • Headquarters: London, United Kingdom
  • Founded: 2016
  • Website: salt.security
  • Phone: (650) 254-6580
  • Email: contact@salt.security
  • Address: 3921 Fabian Way, Palo Alto, California, 94303, United States
  • Specialization: API Protection

20. TechQuarters

TechQuarters is a London-based IT support and consulting company that specializes in leveraging Microsoft cloud solutions to enhance business operations. The firm provides various cybersecurity services, including managed IT services, professional IT services, Microsoft Azure hosting, IT training, and IT security. TechQuarters prides itself on its ability to help businesses save money and derive more benefits from technology. Their strategy is not limited to mending things when they fail; they also focus on monitoring your infrastructure and putting technologies in place to reduce occurrences of system problems. Their goal is to prevent all preventable errors, and in the odd event that an unavoidable fault occurs, measures will be in place to minimize the impact on your organization.

  • Headquarters: London, United Kingdom
  • Founded: 2007
  • Website: www.techquarters.com
  • Phone: 0800 148 8001
  • Email: tellmemore@techquarters.com
  • Address: 52 Grosvenor Gardens, London SW1W 0AU, UK
  • Specialization: IT Support and Consulting, Microsoft Cloud Solutions

London's Cybersecurity Leaders: Top Companies for Your Digital Defense

London, a city known for its vibrant tech scene and bustling business environment, is home to a diverse array of cybersecurity companies. These companies, from startups to established industry leaders, are at the forefront of digital defense, offering robust safety nets to protect your precious data from the ever-evolving threats of the digital world. As we continue to navigate the complex world of cybersecurity, remember that partnering with a reliable company is the first step towards secure and seamless growth. Explore these top companies in London and take the first step towards securing your digital future today.

Conclusion

Arming yourself with the right cybersecurity firm is an imperative move in today's digital landscape. This list of the 20 best cybersecurity firms in London represents the crème de la crème in the industry, each providing robust, comprehensive solutions tailored to meet unique challenges. They are the frontline defense against cyber threats, promising to secure your digital world. Use this list as your go-to reference for making well-informed choices that will strengthen your cyber defenses. With London's cybersecurity experts, you can take your cybersecurity to the next level.

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