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10 Best Cyber Security Companies in London

10 Best Cyber Security Companies in London

Key Points

  • When it comes to protecting your business from cyber threats, it's important to consider working with a reputable cybersecurity company. As the UK's capital city and major financial centre, London is home to several such firms.
  • Selecting a cybersecurity company can be daunting, but with careful research, you can find a firm that meets all your specific needs. Don't settle for just any company – make sure to conduct thorough research and due diligence before entrusting your sensitive data to a third party.
  • When evaluating a cybersecurity firm, there are several key factors to consider. Experience, offered services, technology, certifications, communication, reputation and support are all important aspects to consider. By considering these factors, you can make an informed decision and choose a cybersecurity partner that will effectively protect your business.


London is a prime target for cybercriminals as it is home to many prestigious corporations, financial institutions and government bodies. Hackers employ various strategies to obtain illegal access, steal critical information and disrupt business operations. According to a report by IT Pro, the number of cybercrime incidents in UK businesses increased by 77% in 2022 compared to the previous year, resulting in a staggering loss of over £4 billion.

These statistics are reflected in the real-world events in London, where even large and established organisations fall victim to cyber-attacks. In December 2022, one of London's major newspaper and media agencies, The Guardian, was hit by a ransomware attack that led to the leak of staff members' personal data. The attack was so severe that the company had to ask its employees not to join the office until the end of February this year. In another incident, a school in Tottenham was forced to shut down operations for more than three days due to a cyberattack that disabled its phone lines and systems. These examples highlight the need for businesses in London and the UK to take cybersecurity seriously and be proactive in protecting themselves against cybercrime.

Cybersecurity companies are the go-to solution for defending your business data from malicious actors. They provide a range of services, such as network security, data encryption and incident response, to help protect your company's sensitive information from cyber threats. But with so many options to choose from, it can be daunting to narrow down to one trusted partner.

To help make the decision-making process easier, we have done extensive research and have handpicked 10 of the best London-based cybersecurity companies. These companies have a proven track record of effectively protecting businesses from cyber threats and offer a wide range of services to meet the unique needs of your business. By choosing one of these companies, you can know that your business's sensitive information is in safe hands.

What to Look for in a Cybersecurity Company?

Before delving into our selection of the UK's highly rated cybersecurity firms, it's critical to understand the characteristics that define a reputable provider and how to identify them. Choosing the right cybersecurity partner should be a thoughtful process that considers a company's experience, expertise and dedication to providing exceptional services. To assist in your decision-making process, we have compiled a list of key factors to consider when evaluating a cybersecurity firm:

  • Experience: Look for a company with a proven track record of defending organisations from cyber attacks. They should have a team of professionals with diverse skills and industry expertise.
  • Services: Make sure the firm offers a range of services to protect your business from all angles. This could include network security, data encryption, incident response and penetration testing.
  • Technology: Cybersecurity is constantly evolving, so choosing a company that stays up-to-date with the latest technology and trends is important. This will ensure that your business is protected from the latest cyber threats.
  • Certifications: A company with certifications from reputable organisations, such as ISO 27001, indicates a strong security framework.
  • Communication: Look for a firm that is simple to work with and takes the time to understand your company's demands. They should be able to clearly and concisely describe their services.
  • Reputation: Read customer reviews and testimonials to learn about the cybersecurity company's reputation. This will give you an indication of the quality of service you may expect.
  • Support: Ascertain that the cybersecurity agency provides 24/7 emergency support. It is critical to have someone ready to assist you at all times.
  • Fun and Engaging: Last but not least, look for a fun and engaging firm. Cybersecurity is a serious business, but it doesn't have to be boring. Select a service provider who will make the process enjoyable and interactive.

So, there you have it! By considering these key factors, you can rest assured that the cybersecurity company you choose to work with in the cybersecurity field is a reliable and reputable one.

Top 14 Cybersecurity Companies in the UK

Now that you know what to look for when choosing a cybersecurity company, it's time to take a closer look at some of the top players in the space.

1. Microminder Cyber Security

Microminder Cyber Security

Microminder is a renowned cybersecurity firm based in London with a team of industry experts who have assisted small and large enterprises worldwide in achieving cybersecurity and compliance. With over 34 years of experience in the industry, this well-established firm is a trusted name in cybersecurity. The company offers a wide range of services, such as penetration testing, managed security, cloud security and zero-trust network services. They employ an AI-led technology and expert-led service approach to ensure optimal performance for their clients. In addition to businesses, Microminder also serves government entities and the private sector. What sets Microminder apart is its ability to provide fast, cost-effective solutions and personalised attention. Unlike other Cyber Security as a Service providers, they offer services at fixed fees with no hidden costs. They are dedicated to their promise of "Commitment, Results and Insightful Experience", as evidenced by their numerous positive reviews.

With a proven track record of delivering fast and effective solutions, Microminder has established itself as a leader in the cybersecurity industry. They have a deep understanding of the industry and stay ahead of the curve by continuously investing in research and development. Their innovative approach has resulted in them being recognised as one of the most technologically advanced cybersecurity firms in the market. Whether you're a small business, large corporation, or government entity, Microminder is the partner you can trust for all your cybersecurity needs. Schedule a consultation with a cybersecurity expert from Microminder today to learn more about how this company can help your business.

2. First Response

First Response

First Response is a leading cybersecurity company that offers a comprehensive range of services to protect European businesses and organisations from cyber threats. Their expertise lies in incident response and digital forensics, investigating and responding to cyber-attacks, data breaches and other security incidents. In addition, they provide services such as vulnerability assessments, penetration testing and compliance consulting to ensure the security of their clients’ systems and sensitive information. The company is staffed by experts in the field who are available 24/7 to provide clients with the support they need.

3. ITC Secure

ITC Secure

ITC Secure is an advisory-led cybersecurity firm based in London, UK. Their services include security consulting, penetration testing, incident response and compliance management, all aimed at safeguarding networks, systems and sensitive data from cyber threats. The company's team of experts possess extensive experience in the field of cybersecurity. They are dedicated to helping organisations stay informed about the latest threats and best practices through training and education. With a reputation for delivering high-quality services and a relentless focus on customer service, ITC Secure brings together the best minds in security and advanced technological expertise to help businesses succeed. In addition, they are CREST and ISO 27001 certified, ensuring that their services are in line with industry standards.

4. Urban Network

Urban Network

London-based Urban Network is an outsourced IT solutions provider founded in 2002. They offer a range of services, including cyber threat intelligence, incident response, penetration testing and security assessments, all of which are tailored to each client's unique needs. They are committed to providing custom solutions that meet each client's specific needs and have partnered with the best IT providers to offer fully-managed services for any requirement. The company's staff continuously undergo training to stay on the cutting edge of the IT world, ensuring their clients are always protected against the latest cyber threats.

5. Crossword Cybersecurity

Crossword Cybersecurity

Crossword Cybersecurity is a cybersecurity firm based in London that specialises in providing a comprehensive range of solutions to businesses of all sizes. They understand the importance of securing businesses, which is why they employ a combination of people, processes and technology to ensure the highest level of security. The company's experienced consulting team, managed services and SaaS products work together to provide a complete security solution. Crossword collaborates with leading UK universities to incorporate the latest research insights into their products and services. The firm specialises in a range of cybersecurity areas, including strategic planning and risk management, supply chain security, threat identification and response, and digital identity management.

6. Sophos


Sophos, established in 1986, is a global technology firm specialising in providing comprehensive cybersecurity solutions to protect businesses and organisations from online threats. The company's offerings include a wide range of services, including comprehensive end-to-end protection, malware detection and removal, data security monitoring and management, rootkit removal and protection, active attack response, web application firewalls, virtual private networks and intrusion prevention systems. Additionally, Sophos is recognised for its expertise in real-time detection of zero-day threats, meaning threats that have never been seen before, which allows them to stay ahead of potential cyber threats and keep their clients' information secure.

7. Fortinet


Fortinet is a leading provider of cyber infrastructure protection products and services, with a global reach and a reputation as one of the largest providers in the world. They offer many solutions to protect businesses from cyberattacks, including the Fortinet FortiGate firewall, FortiWiFi wireless security and Fortinet iCloud cloud services. These products are engineered to help businesses detect, respond to and prevent online attacks, ensuring the safety and security of their sensitive data and operations. Fortinet's suite of products is designed to provide a comprehensive defence against a wide range of cyber threats, including network-based threats, malware, advanced persistent threats, and compliance and regulatory requirements. With its cutting-edge technology and expert support, Fortinet empowers businesses to protect their critical assets and maintain business continuity in the face of constantly evolving cyber threats.

8. Akamai


Akamai is a global cloud services provider that provides innovative solutions to help businesses protect their data. They offer a range of products and services, including Content Delivery Networks (CDNs), Security Gateways, Endpoint Protection Solutions, Cloud Security Services and Worldwide Reputation Management. Akamai helps businesses quickly deploy the right security solution for their needs while reducing overall costs.

9. Arxan


As a global leader in cybersecurity solutions, Arxan has been at the forefront of protecting organisations from the latest cyber threats for over 20 years. Their comprehensive range of products and services empowers businesses to safeguard their data and operations from online attacks. Arxan's award-winning solutions include the Arrest Force intrusion detection system, which detects and prevents malicious traffic from reaching your business networks; the SGX content security appliance, which ensures the encryption of sensitive data at rest and in transit; the ProtectIQ cloud security platform, providing total visibility into all aspects of your online activity; and the Protected Data Platform (PDP), giving you control over the protection of sensitive data in the cloud.

10. Brainloop


Brainloop is a top-ranked international cybersecurity solution provider that safeguards businesses from cyber threats. They offer an extensive array of products and services, including Threat Detection and Response (TDR), Cybersecurity Data Analytics, Continuous Intelligence Feeds for Security Operations Centers (CIFSOCs), Automated Target Identification and Monitoring (ATIM) technologies, Secure Remote Backups for mission-critical systems, Enterprise Mobility Management (EMM) Solutions and Provisioning Services. Their solutions empower businesses by automating security processes and providing real-time intelligence on potential threats, enabling them to maintain a proactive security posture. Brainloop's solutions are designed to eliminate the need for dedicated security personnel and provide businesses with cost-effective, efficient and comprehensive cybersecurity protection.

Making the Right Choice: A Questionnaire to Help Choosing the Right Cybersecurity Firm

The companies on this list are among the top 10 in the city, but it's important to remember that not all are created equal. Each one offers unique services and possesses distinct qualities. Before making your final decision, you must ask yourself some key questions and carefully evaluate each option.

Here are a few to get you started:

  • Does the company offer a range of cybersecurity services?
  • Are the team members experienced and reliable?
  • Is there a 24/7 dedicated support line?
  • Are the prices offered affordable and competitive?
  • Does the company have a wide customer base and good reviews?
  • Is the company certified by recognised organisations?
  • Does the company handle data privacy and comply with regulations such as GDPR or HIPAA?

If you can answer these questions with a "yes", you've found a company that can provide reliable and affordable cybersecurity services. However, if any of these questions are "no’s”, then you may want to look for a different provider.

Bottom Line

Cybersecurity is an important investment, and choosing the right company to protect your data is important. The companies described in this article are among the best in town and provide various services. Contact one of these top providers if you're ready to take your security measures to the next level.


Who are the top 5 cybersecurity companies in London?

Cybersecurity has become a critical aspect of business, and as such, many companies specialise in this area. The Top 5 cybersecurity companies in London are Microminder, First Response, ITC Secure, Urban Network and Crossword Security.

Is London a good location for cybersecurity companies and services?

London is considered to be one of the best cybersecurity locations in the world, thanks to its history and diversity. The city has a long history of being an intellectual centre and remains a major financial hub for Europe.

What are some of the biggest challenges that companies in London face when it comes to cybersecurity?

The biggest challenges that companies in London face when it comes to cybersecurity are the same as those faced by companies everywhere: data breaches, cybercrime and continuing trends of digital transformation.

Cybersecurity has become a critical aspect of business, and as such, many companies specialise in this area. The Top 5 cybersecurity companies in London are Microminder, First Response, ITC Secure, Urban Network and Crossword Security.

London is considered to be one of the best cybersecurity locations in the world, thanks to its history and diversity. The city has a long history of being an intellectual centre and remains a major financial hub for Europe.

The biggest challenges that companies in London face when it comes to cybersecurity are the same as those faced by companies everywhere: data breaches, cybercrime and continuing trends of digital transformation.