Top Cybersecurity Consulting Companies in London

Infinum is a skilled mobile app development company, highly regarded for quality engineering and exceptional project management. Clients consistently praise their flexibility and seamless team integration, with over 95% of reviews highlighting their proactive approach and dependable delivery. They are recommended for organizations seeking a long-term engineering partner combining technical talent with outstanding support.

Future Processing is a cybersecurity company specializing in services such as Information Security, IT Security, and Vulnerability Assessments. The company consistently receives high praise, with 100% of reviewers noting their professionalism and valuable insights. Clients commend their tailored solutions and comprehensive reports, highlighting exemplary expertise and methodology, making them a highly recommended partner for cybersecurity needs.

CloudTech24 is a managed cybersecurity and IT support provider specializing in information security, network security, and managed cybersecurity services. Across their reviews, 100% of clients highlight their technical expertise, rapid response times, and system security improvements, with no reported areas for improvement, emphasizing their professionalism and reliability in delivering comprehensive cyber defense solutions.

TWC IT Solutions provides services including Information Security, IT Security, Network Security, and Cyber Defense. Client feedback highlights their reliable service delivery, effective communication, and outstanding problem-solving skills. Reviews consistently emphasize TWC IT Solutions' responsiveness and professionalism, contributing to high internet speed and stable connections for clients.

Genmar (UK) Ltd is a cybersecurity company specializing in Cyber Essentials certification and IT security services. Clients consistently praise their excellent project management, communication, and ability to deliver results on time. The reviews reflect 100% satisfaction, highlighting successful certification processes and strong cyber defense improvements. Notably, 100% of reviewers appreciated their communication and timely delivery.

Andersen Inc. is a versatile software development company offering a range of IT services, including UX/UI design, software engineering, and digital product development. The reviews indicate a high level of client satisfaction, with over 90% of feedback highlighting their expertise, timely delivery, and proactive communication. Clients often commend Andersen Inc. for their ability to integrate seamlessly into existing teams and for providing innovative solutions.

Sigma Software Security is a cybersecurity consulting firm specializing in ISO 27001 and SOC 2 certifications and compliance. The reviews highlight their exemplary project management, strategic guidance, and deep domain knowledge, resulting in successful certifications with zero nonconformities. A remarkable 100% of clients praise their communication, reliability, and ability to seamlessly integrate with internal teams, underscoring their role as a trusted long-term partner.

Opus Technology is a managed IT services provider specializing in IT asset management, cybersecurity, and connectivity solutions. Across their reviews, 100% of clients highlight their professionalism, timely delivery, and innovative approach, resulting in increased system reliability and security. Clients report significant reductions in internal IT burdens, with no areas identified for improvement.

Transparity is a managed cybersecurity company specializing in Information Security, IT Security, Cyber Defense, and Data Protection services, particularly within Microsoft environments. With a 100% positive feedback rate, clients commend their expertise, timely project delivery, and customer-first approach. Transparity is praised for improving clients' security postures and maintaining robust communication and partnership dynamics.

BreachLock Inc is a specialized Cyber Security company offering services like penetration testing and vulnerability assessment. The reviews for BreachLock Inc are unanimously positive, with clients commending its efficient project management and cost-effective solutions. The ability to conduct on-demand retests through its platform is highlighted by 100% of reviewers as a unique and impressive feature.

Texaport is a Managed Cybersecurity and IT Security company offering a range of services, including data protection, network security, and IT support. Reviews highlight their expertise in cybersecurity, efficient project management, and responsive customer service, with 100% of feedback being positive regarding their reliability and professionalism. Notably, 70% of clients appreciated their tailored solutions and proactive approach to problem-solving.

Wavex Technology Ltd is a cybersecurity company specializing in managed cybersecurity services, including information security and IT security. With 100% positive feedback, reviewers commend their timely project delivery and respectful communication, noting their ability to integrate seamlessly into client teams and ensure compliance in cybersecurity standards.

Foresite Cybersecurity is a managed cybersecurity company focused on providing comprehensive IT security solutions, including vulnerability assessment, network security, and penetration testing. Reviews indicate high satisfaction, with over 90% highlighting their responsiveness, thorough communication, and the value of their services. Their skilled engineers and competitive pricing are consistently praised, making them an excellent choice for clients needing tailored cybersecurity support.

Stingrai Inc. is a cybersecurity company specializing in penetration testing, information security, and data protection services. Reviews indicate a strong emphasis on delivering high-value results, with 100% of clients highlighting their responsiveness and professionalism. Additionally, 80% of reviewers praised their comprehensive reports and actionable recommendations, demonstrating their adeptness in managed cybersecurity and network security.

Link Group is a company specializing in managed cybersecurity and information security solutions. They have received overwhelmingly positive feedback, with 100% of reviewers highlighting their flexibility, commitment to quality, and the high caliber of specialists provided. Clients commend their ability to meet niche requirements with efficiency and clear communication, noting no significant areas for improvement.

Transputec Ltd is a cybersecurity company specializing in managed cybersecurity, network security, and data protection services. The reviews highlight the company's professionalism, flexibility, and effective communication, with 100% of reviews noting their impressive project management and comprehensive solutions. While minor delays were occasionally noted, the overall satisfaction with their clear, actionable outcomes was consistently high.

ELEKS is a software and technology services company specializing in software development, IT services, and staff augmentation for diverse industries, including finance, cybersecurity, and defense. Reviews highlight their exceptional project management, timely delivery, and high-quality engineering talent, with 100% positive feedback on their collaboration and responsiveness. Reviewers frequently appreciate ELEKS' ability to integrate seamlessly with client teams and consistently meet project objectives, despite challenges like time zone differences and geopolitical issues.

ERRNA is a product development company that excels in managing backlogs and implementing new features based on client feedback. Reviews indicate a 100% positive experience, highlighting their exceptional project management, effective communication, and alignment with client values. Clients particularly appreciate the expertise of their product manager and the company's transparency.

Mad Devs is a technology solutions company offering services in software development, infrastructure modernization, and DevOps. Their reviews highlight a consistent pattern of excellence, with clients praising their project management, technical expertise, and responsiveness. Notably, 100% of the feedback emphasizes their ability to meet deadlines and deliver high-quality results. Clients also commend their transparent communication and proactive problem-solving approach. Mad Devs stands out for its resourcefulness and deep understanding of client needs, making them a reliable partner for complex tech projects.

esynergy is a cybersecurity-focused company specializing in IT security solutions such as high-security password vaults and high availability systems. Reviews indicate 100% satisfaction with their ability to meet project objectives and their self-managing teams' expertise in architectural planning and coding. Notably, 100% of clients appreciated their adaptability and subject matter expertise.

HewardMills is a distinguished company specializing in Data Protection and Managed Cybersecurity services. Their consistent success in achieving compliance with global privacy regulations, such as GDPR and CCPA, is highly praised by clients. Approximately 90% of reviewers commend their adaptability and professionalism in handling complex regulatory challenges, reinforcing their reputation as a leader in information security and privacy consultancy.

Smartdesc is an IT support and consultancy firm specializing in transitioning organizations to cloud-based environments, such as Office 365. Based on the reviews, 100% of the feedback is positive, highlighting their professionalism, responsiveness, and problem-solving abilities. Clients appreciate their structured project management and significant improvements in technology and customer service.

HookPhish is a Cyber Security company specializing in phishing simulations, security awareness training, and threat visibility through data breach and typosquatting detection. Approximately 100% of reviews highlight their impactful phishing simulations and external threat monitoring. Clients commend HookPhish for reducing phishing click rates by 35%-40% and increasing suspicious email reporting by over 50%.

Sagiton is a versatile software development company known for its expertise in creating tailored solutions across various IT domains, including CAD/BIM platforms, mobile apps, and web systems. With consistent positive feedback, 100% of reviewers commend Sagiton's professionalism, communication, and ability to meet deadlines. A significant 75% highlight their flexibility and understanding of client needs, while no reviews indicate dissatisfaction or areas needing improvement.

Vodworks is a technology solutions company specializing in developing data platforms, analytics tools, and web infrastructure, often praised for providing good value for cost. Across their reviews, 100% of clients are impressed with their project management, meeting deadlines efficiently and offering high-quality technical expertise. Their collaborative approach and effective communication are frequently highlighted as key strengths, with no significant areas of improvement noted.

Article Ten is a creative agency specializing in brand development and animated presentations. Feedback highlights their exceptional creative quality and effective project management, with 100% of reviewers expressing satisfaction with their outcomes and on-time delivery. Their services were pivotal in achieving sponsorship targets, underscoring their value and efficiency.

Sereno IT Support, an IT support service provider, is praised for its proactive approach and reliable solutions, ensuring smooth operations for clients like Panem Agency. With 100% positive feedback, clients commend their swift response times and sense of ownership, treating client IT issues as their own and reducing recurring problems.

Teceze Ltd is a cybersecurity-focused company providing comprehensive services such as information security, cloud migration, and managed IT support. They received overwhelmingly positive feedback, with 100% of reviewers highlighting their impressive innovation and customer-centric approach, resulting in significant improvements in operational efficiency and security incident reduction. The company's adaptability and proactive communication are consistently praised.

Kavix is a managed cybersecurity company specializing in IT security and vulnerability assessments. Praised for their proactive approach and quick response times, 100% of reviewers report improvements in operations, citing zero security incidents and robust data protection. Their services have instilled absolute confidence in data protection standards among clients.

Line20 Digital is a web development company renowned for its exceptional design and project management skills. They have garnered consistently positive feedback, with 100% of clients praising their efficiency, design capabilities, and personal approach. Clients particularly value their seamless communication and the ability to deliver aesthetically pleasing, functional results that meet evolving business needs.

Clear Thinking IT Solutions is a cybersecurity company offering managed cybersecurity and IT security services. Their reviews highlight a 100% customer satisfaction rate, emphasizing their people-centered approach, quick problem-solving capabilities, and ability to exceed SLAs. Clients appreciate their proactive and reactive support in information and network security.

MLabs Ltd is a technology consultancy and development company known for delivering high-quality platforms with a focus on both backend and frontend development. Clients commend their collaborative approach, professionalism, and ability to offer strategic insights, with 100% positive feedback highlighting their commitment to project success and seamless integration into client teams.

Suntel Analytics offers a wide range of cybersecurity services, including Information Security, IT Security, Network Security, Cyber Defense, and Data Protection. The reviews reflect that Suntel Analytics consistently delivers tailored, proactive, and effective cybersecurity solutions, significantly reducing breaches and enhancing client confidence. However, some clients suggest that clearer communication and proactive updates could further enhance their service quality.

BSI Group is a compliance and certification company specializing in ISO certifications, notably ISO 13485 for healthcare and medical device sectors. Reviewers highlight their straightforward approach and clarity, with a 4/5 satisfaction rating, although some suggest improvements in pre-audit communication. Overall, they maintain a strong reputation, chosen by leading companies.

Crypto Legal Ltd is a cybersecurity company specializing in Information Security and Vulnerability Assessment. Feedback highlights their excellent project management and client-centric approach, with 100% of reviewers noting their proactive communication and flexibility. Their penetration testing effectively improved system defenses, demonstrating their commitment to understanding and addressing specific security needs.

Computer Care is an IT service provider specializing in cloud solutions and migrations, particularly to Azure AVD. Reviews highlight their effective project management and hands-on approach, with 100% of feedback noting successful migration without downtime. While performance issues were mentioned, they were promptly resolved, demonstrating adaptability and expertise.

Doherty Associates is a consultancy company specializing in M365 licensing and SharePoint services. The overall feedback for Doherty Associates is overwhelmingly positive, with 100% of reviewers highlighting their technical expertise and responsive project management. Clients commend them for delivering secure and straightforward solutions while being aligned with company values.

Intelance – Enterprise Architecture & Cybersecurity Consultancy is a specialized firm providing comprehensive cybersecurity services, including IT security, network security, and cyber defense. Reviews highlight their ability to deliver structured, efficient, and timely solutions, achieving a 100% success rate in eliminating compliance tracking issues and reducing admin workload by 18 hours weekly. Clients praise their strategic, practical approach, with 32% mentioning expedited project completion and seamless communication.

KEW DATA is a cybersecurity and data protection firm specializing in information security, compliance, and data privacy services. With 100% positive feedback, clients commend their expertise in creating tailored solutions, strong project management skills, and commitment to enhancing regulatory compliance and data governance. KEW DATA’s client-focused approach and effective communication are particularly highlighted in their reviews.

HelpDesk Heroes is a managed cybersecurity company specializing in IT Security, Network Security, and Data Protection. Reviews highlight their proactive approach, exceptional project management, and seamless integration with internal teams. With 100% positive feedback, clients praise their technical expertise and ability to enhance system reliability and security, ensuring compliance and reducing downtime.

T3 is an AI consultancy firm that excels in implementing AI governance and security within regulated environments. Their services were praised for balancing compliance, security, and usability, making AI adoption scalable. The company received unanimous positive feedback, with 100% of reviewers commending their effective communication and proactive project management.

Persistent Systems is a company specializing in low-code process management tools, web service development, and database work, primarily for the insurance industry. The feedback from reviews is overwhelmingly positive, with commendations for their flexibility, communication, and project management skills. Approximately 100% of the feedback highlights their adaptability and commitment to client success.

VUPAX Solutions Limited is a web development company known for its creative and efficient solutions. They successfully developed a website and managed company emails for Shree Axar Ltd, delivering projects on time and providing good value for cost. Reviewers appreciate their creativity and efficiency, with 100% positive feedback on timely delivery and impressive project management.

Opstergo is a specialized DevOps and cloud infrastructure consultancy firm known for its expertise in AWS, GCP, Azure, Kubernetes, and IaC technologies. Across their reviews, 100% of clients praise their effective project management, timely delivery, and responsiveness. Additionally, 75% of reviews highlight their ability to significantly enhance scalability, security, and operational efficiency while reducing costs.

ValueLabs is a comprehensive back office service provider offering technology, legal, medical, and processing services. The feedback highlights their strengths in delivering high-quality work, improving operational efficiency, and enabling company growth. Approximately 90% of the reviewers commend ValueLabs' ability to enhance their business objectives, while only 10% mention areas for improvement, indicating a largely positive experience overall.