Qualysec

cyber security expert

Top 50 Cybersecurity Firms in UK 2025
Cybersecurity Companies

Top 50 Cybersecurity Firms in the UK 2025!

In this highly competitive market where the most important sectors of the industry are tech companies and companies that offer services are the ones who have the highest risk of cybersecurity threats and security vulnerabilities in their respective sectors of business. To meet these needs every country is looking for their best cybersecurity services to protect against cyber attacks. In this particular blog, we will see the major top 50 cybersecurity firms in the UK. Top 50 Cybersecurity Firms in the UK 2025! 1. QualyeSec QualySec is regarded to be one of the United Kingdom’s most trustworthy and dependable cybersecurity consulting firms. QualySec, recognized for its dedication to quality, based on information processes, and emphasis on customer happiness, has emerged as an excellent option for businesses of all sizes looking for reliable security measures.   What Makes QualySec Stand Out? QualySec provides a comprehensive suite of penetration testing services tailored to satisfy a variety of safety requirements. Their specialties include web application assessment, mobile device safety, networking and architecture evaluations, and online safety evaluations.   This diverse range of offerings guarantees that customers are adequately and effectively protected against any dangers.   Major Aspects of QualySec’s services: QualySec’s organized test methodology combines manual and automated methodologies to find even highly complicated vulnerabilities.   Clear and Actionable Reports: Rather than confusing customers with technical jargon, QualySec delivers simple reports with practical suggestions customized to specific company needs.   Certified Experts: The team is comprised of highly trained experts who hold certifications such as OSCP, CEH, and CISSP, assuring top-tier knowledge.   Industry Experience: Qualysec has worked with customers from a variety of industries, including finance, e-commerce, healthcare, and IT, exhibiting agility and a thorough grasp of industry concerns. Latest Penetration Testing Report Download 2. Tenable Technologies for constant tracking and managing vulnerabilities are Tenable’s areas of expertise. Their software assists companies in locating and addressing security flaws in clouds and IT infrastructures. Tenable’s contribution to helping organizations manage secure and constitutional connections is well known. 3. Darktrace Darktrace is an industry leader in AI-powered the field of cybersecurity, employing powerful artificial intelligence to identify and react to attacks in immediate response. Their autonomous learning system gets used to each of the company’s specific surroundings, detecting anomalous conduct as it worsens.   Darktrace’s products are extensively adopted throughout sectors because they guard from malware that demands ransom phishing, or and attacks conducted by insiders.   They have an important footprint in the United Kingdom and are still expanding, assisting companies in staying on top of increasingly complex threats. 4. NCC Group NCC Group is a global cybersecurity specialist who assists firms in protecting their information and infrastructure against cyber assaults. Their offerings include hacking, risk control, and incident response. Having a heavy focus on innovation, NCC Group works across sectors to keep organizations safe.   Their group of professionals offers customized approaches to tackle weaknesses and improve durability, rendering them an asset for businesses looking to secure what they do. 5. F Secure F-Secure is a reputable cyber security information business that provides products such as endpoint safeguards, identification of threats, and incident handling. They assist both businesses and people stay secure internet through offering solutions for defending from malicious software, ransomware, and various other cyber dangers. F-Secure’s preventive approach and straightforward solutions have made it an attractive option for enterprises trying to improve their level of security in a world that is becoming more connected. 6. BAE Systems Applied Intelligence BAE Systems Applied Intelligence focuses in providing cybersecurity and intelligence services to governments as well as companies. They concentrate on defending vital systems and private information against cyberattacks. They provide security detection, digital inquiry, and cyber safety. Alongside centuries of knowledge, BAE Systems blends modern technology with extensive knowledge to assist customers in navigating difficult safety concerns by providing defense against new risks. 7. Kaspersky Kaspersky is a worldwide cybersecurity business best recognized because of its antiviral and endpoint protection products. They offer outstanding defense against spyware, phishing emails, and various other cyber dangers. Kaspersky’s solutions are utilized by enterprises as well as people all around the world, providing actual time threat analysis and full safety features. Notwithstanding the controversy, they continue a major participant in the protection business, always innovating to combat evolving threats. 8. CrowdStrike  CrowdStrike is an industry leader in cloud-delivered protection for endpoints, using AI to identify and avoid intrusions immediately. The Falcons technology provides full threat identification, reaction, and investigation capacities. CrowdStrike’s creative strategy has rendered company a popular choice for businesses looking to defend their electronic records from sophisticated cyber assaults. Having significant operations in the United Kingdom, they remain at the forefront of contemporary encryption. 9. Trustwave Trustwave is a worldwide pioneer in integrated safety services, assisting organizations with safeguarding data and regulatory compliance. They provide solutions for identifying threats, risk leadership, and handling incidents. Trustwave’s experience crosses sectors, providing bespoke safeguards to reduce threats and improve endurance. The proactive mindset provides them with an invaluable resource for enterprises dealing with complicated cybersecurity concerns. 10. BT Security BT Security is BT Group’s cyber security awareness subsidiary, offering an array of solutions to safeguard enterprises against cyberattacks. The company offers customized safety services, threat analysis, and secure network technologies. Having an emphasis on critical systems shielding, BT Security assists enterprises in detecting, preventing, and responding to cyberattacks to ensure uninterrupted operations and information confidentiality. 11. Reversing Labs ReversingLabs specializes on searching for threats and detection of malware, offering tools for detecting and analysing unsafe programs. Their technologies assist enterprises in detecting undetected hazards in data and programs, assuring total protection. ReversingLabs’ skills in reversing technology and threat detection render them invaluable collaborators for firms looking to secure themselves against advanced assaults. 12. Proofpoint Proofpoint focuses on secure email, the safety of data, and attack management. Their products assist enterprises in protecting from malware, spyware, and attacks from insiders. Proofpoint’s robust data analytics and threat knowledge help organizations discover and manage threats efficiently. Having a strong

Cyber Security Companies in London
Cyber security

Top 20 cyber security companies in London, 2025

Cybersecurity is one of the most hotly contested topic in today’s time. Each and every industry in the market are adapting the cybersecurity as a strong base to make their functions more robust. As much every corner of the globe requires cybersecurity, here we come up with the top 20 cyber security companies in London seeing the year 2025! The Top 20 Cyber security Companies In London 2025! 1. Qualysec Qualysec Technologies, a top cybersecurity organization founded in 2020, has rapidly expanded to emerge as among the largest and most renowned in the field of cybersecurity in London. The company is a major cybersecurity firm due to its unique expertise and expertise in secure monitoring techniques. Qualysec professionals can help find flaws that could be leveraged by hackers. Following, identifying these flaws, Qualysec works with the organization to develop a strategy to address them and improve the company’s security in basic compliance. Amongst the many functionalities, the firm also offers:   Talk to our Cybersecurity Expert to discuss your specific needs and how we can help your business. Schedule a Call 2. First Response Leading cybersecurity consulting firm First Response provides an extensive variety of amenities to shield European companies and organizations from online attacks. They are skilled in online forensics and crisis management, looking into and handling hacking attempts, online attacks, and different risks.   To further guarantee the safety of the customer’s systems and private data, they also offer solutions like risk assessments, penetration testing, and regulatory consultation. The organization employs subject-matter specialists who remain on call around the clock to help customers. 3. ITCSecure London, UK-based ITC Secure is a top cybersecurity company with an advising focus. To protect infrastructure, systems, and confidential information from cyber crimes, they offer safety consultation, penetration testing, incident response, and managing compliance.  The professionals on the organization’s staff have a wealth of cybersecurity expertise. By instruction and research, they are committed to assisting organizations in staying up to date on the most recent dangers and optimal procedures. ITC Secure, which has an image for providing outstanding solutions and an unwavering emphasis on client satisfaction, combines the brightest brains in safety and cutting-edge technology to support company success. They also have ISO 27001 and CREST certifications, which guarantee that operations meet the requirements of the sector 4. Urban Network Established in 2002, London-based Urban Network is a supplier of professional information technology services. They deliver a variety of cyber security solutions that are customized to meet the specific requirements of every customer, such as incident response, penetration testing, cyber-attack data, and security evaluations. They have joined up with leading IT companies to provide fully-managed support for any need and are dedicated to creating distinctive approaches that satisfy the unique requirements of every customer.  To keep on the forefront of the IT industry and guarantee that customers remain safe from the newest threats from hackers, the business’s employees receive regular instruction. 5. Crossword Cybersecurity London-based Crossword Cybersecurity is the best cyber security service provider that specializes in offering an extensive variety of services for companies of every size. Companies use a mix of individuals, processes, and equipment to guarantee the greatest level of safety since they recognize how important it is to secure organizations. A comprehensive security measure is offered by the business’s skilled advisory staff, management services, and SaaS products. In order to integrate the most the most recent findings into its goods and services, Crossword works with top UK universities. The strategy and risk control, the protection of supply chains, malware detection and its reaction, and managing digital identities are just a few of the security domains in which the company specializes. 6. Sophos Founded in 1986, Sophos is a multinational technology company that specializes in offering cyber threats and complete safety measures to shield companies and organizations from online dangers. Complete from start to finish protection, identification of malware and elimination, information safety tracking and leadership, software elimination and safety, proactive attack reply, web-based antivirus programs, private clouds, and anti-intrusion systems are just a few of the many services that the organization provides. In order to remain aware of possible attacks and protect the information of its customers data, Sophos is also renowned for its proficiency in immediate tracking of hackers to be risks, or cyberattacks that weren’t seen previously. 7. Fortinet Having a worldwide network and a track record for being one of the biggest cybersecurity assessment suppliers worldwide, Fortinet is a top supplier of cyberspace safety goods and services. The Fortinet FortiGate firewall, FortiWiFi wireless protection, and Fortinet iCloud cloud solutions are just a few of the numerous options they provide to shield companies from threats. These solutions are designed to assist companies in identifying, thwarting, and preventing cyberattacks, protecting their critical information and company procedures. The items included in Fortinet’s suite are made to offer a complete defense from a variety of online dangers, such as spyware, network-based attacks, sophisticated recurrent threats, and legal and governmental demands. 8. Akamai Multinational cloud computing firm Akamai offers creative ways to assist companies in safeguarding their information. Content Delivery Networks (CDNs), Safety Pathways Endpoint Privacy Options, Secure Cloud Solutions, and Global Image Management are just a few of the goods and services they provide. Akamai lowers total costs while assisting companies in swiftly implementing the best safety measures for their requirements. 9. Arxan For more than 20 years, Arxan, a world pioneer in security measures, has remained at the leading edge of defending businesses against the most recent online dangers. Their extensive array of commodities and amenities enables companies to protect their information and processes from cyberattacks. The Singapore Exchange content safety device guarantees the safety of private information both in movement and at idle; the ProtectIQ cloud safety structure offers you full oversight into all facets of the online action; the Protected Data Platform (PDP), gives you authority over the safety of responsive information in the cloud; and the Arrest Force detection system, which blocks unwanted traffic via

Scroll to Top
Pabitra Kumar Sahoo

Pabitra Kumar Sahoo

COO & Cybersecurity Expert

“By filling out this form, you can take the first step towards securing your business, During the call, we will discuss your specific security needs and whether our services are a good fit for your business”

Get a quote

For Free Consultation

Pabitra Kumar Sahoo

Pabitra Kumar Sahoo

COO & Cybersecurity Expert