In today’s digital age, keeping your business secure from cyber threats is more important than ever. Network security audits are an essential part of maintaining strong defenses against potential breaches, ensuring that your systems are protected and compliant with industry standards. In the UK, numerous companies specialize in providing detailed security audits, helping businesses identify vulnerabilities and improve their overall network safety. In this article, we’ll look at some of the top network security audit firms in the UK that can help ensure your business stays one step ahead of cybercriminals.
1. A-listware
At A-listware, we focus on providing comprehensive IT services, including network security audits, to ensure that businesses can effectively manage their technology and infrastructure. With a strong emphasis on collaboration, we work closely with clients-including those across the UK-to identify vulnerabilities and enhance security practices. Our team specializes in implementing tailored cybersecurity measures to match the unique needs of each business, ensuring that systems are properly assessed and protected against potential threats.
We understand that security is an ongoing process, which is why we offer continuous support and guidance. Through a thorough audit process, we help UK-based and international businesses pinpoint weaknesses and take proactive steps to mitigate risks. Whether it’s through evaluating cloud-based infrastructures or on-premises systems, our approach aims to strengthen network security and provide peace of mind in an increasingly complex digital landscape.
Key Highlights
- Comprehensive network security assessments
- Tailored solutions to address specific business needs
- Emphasis on proactive risk mitigation
- Focus on both cloud-based and on-premises security
- Continuous support and guidance post-audit
Services
- Network security audits
- Cybersecurity consulting
- IT infrastructure management
- Cloud security assessments
- Risk management and compliance
- Vulnerability scanning and penetration testing
Contact and Social Media Information
- Website: a-listware.com
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone: +44 (0)142 439 01 40
- E-mail: info@a-listware.com
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
2. Dion International Ltd
Dion International helps companies across the UK figure out where their security might be lacking -and what to do about it. They’re not just looking at firewalls and passwords either. Their audits go into everything: the tech systems, physical buildings, how people handle security day to day, and even the little stuff that often gets overlooked. Whether you run a big corporate office or a private estate, they’ve probably dealt with something similar.
They’re pretty hands-on with their approach. Their team digs into the details and gives you solid, usable feedback -not just another checklist you’ll never read. From checking who has access to your spaces to evaluating how well your network’s holding up, they cover all the angles to help you stay a few steps ahead of any serious threats.
Key Highlights
- Covers both tech and physical security
- Gives practical advice, not just reports
- Works with all kinds of industries
- Knows how to handle high-risk or high-value environments
- Helps clients stay on top of evolving risks
Services
- Full security audits
- Risk and compliance consulting
- Vulnerability checks
- Reviews of team processes and on-site procedures
- Evaluations of buildings and infrastructure
Contact and Social Media Information
- Website: www.dion-international.com
- Address: Hudson House, Edinburgh, EH1 3QB, UK
- Phone: +44 131 212 5900
- E-mail: enquiry@dion-international.com
- Instagram: www.instagram.com/dioninternational
- Twitter: x.com/dionintsecurity
- Facebook: www.facebook.com/Dioninternationalltd
3. Netitude Ltd
Netitude’s the kind of IT company that doesn’t just fix things after they break -they make sure stuff doesn’t break in the first place. They do deep-dive security audits for businesses all across the UK, checking your IT systems for any weak spots and helping you tighten things up. Firewalls, endpoint security, user access -they’ll go through it all and give you a clearer picture of how protected you really are.
Their approach isn’t just about tech either. They look at how your people are using the systems, how policies are set up, and how everything fits together. It’s proactive, and it’s meant to keep you from scrambling when something goes wrong. Plus, they stick around afterward to help make sure everything actually gets implemented.
Key Highlights
- Full-system audits, not just surface checks
- Strong focus on prevention and planning
- Helps you meet compliance stuff like GDPR
- Looks at both tools and internal practices
- Ongoing support instead of one-and-done fixes
Services
- Cyber security reviews
- Risk and compliance assessments
- Endpoint and network protection audits
- Penetration testing and vulnerability scans
- Help with building out response plans
Contact and Social Media Information
- Website: www.netitude.co.uk
- Address: Unit E5, Commerce Park, Frome, Somerset, BA11 2RY, UK
- Phone: 0333 2412320
- E-mail: hello@netitude.co.uk
- LinkedIn: www.linkedin.com/company/netitudeltd
- Instagram: www.instagram.com/netitudeltd
- Twitter: x.com/netitude
- Facebook: www.facebook.com/netitudeltd
4. Akita Ltd
Akita’s been in the IT game across the UK, and they know their way around cybersecurity-especially when it comes to incident response planning. They offer detailed audits that take a good hard look at everything you’ve got-your hardware, your software, your policies, even how your team uses it all. Their goal is to help UK-based businesses identify vulnerabilities and build proactive response strategies before issues escalate into full-blown incidents.
They don’t believe in copy-paste solutions either. Everything they do is tailored based on your setup and what your company actually needs. Whether you’re a small team in Manchester or a growing firm in London, they’ll scale it accordingly. Akita also ensures your systems align with UK standards like Cyber Essentials and CREST, giving you not just technical resilience but legal peace of mind-an essential edge for companies serious about incident response readiness.
Key Highlights
- Tailored audits for different business sizes
- Looks at tech, user behavior, and policies
- Proactive fixes instead of band-aid solutions
- Compliance-ready with Cyber Essentials, CREST, etc.
Services
- Security audits (full IT systems)
- Pen testing and vulnerability checks
- Risk consulting and IT planning
- Cyber Essentials and CREST prep
- Infrastructure reviews
Contact and Social Media Information
- Website: www.akita.co.uk
- Address: Unit 15 Nepicar Park, Wrotham, Kent, TN15 7AF, UK
- Phone: 0330 058 8000
- E-mail: info@akita.co.uk
- LinkedIn: www.linkedin.com/company/akita-limited
- Twitter: x.com/akita_limited
- Facebook: www.facebook.com/AkitaSystems
5. NCC Group
NCC Group is one of the bigger players in the cybersecurity world, and they’ve got the resources to handle the complicated stuff. They work with companies of all sizes, helping them figure out where their digital defenses need shoring up. Their audits look at everything from firewalls and software to your internal policies and team workflows. As a UK-headquartered firm, they’re especially well-positioned to support organisations navigating local compliance and building incident response plans aligned with national standards.
They’ve got people available 24/7, which is helpful if you’re dealing with time-sensitive issues or active threats. Their work goes deep-they don’t just flag problems, they help map out long-term solutions. Whether it’s making sure you’re compliant with regulations or just beefing up your cyber defenses, NCC Group is the kind of company that’s been there, seen that-and in the UK context, they’re a trusted partner for incident response readiness across sectors.
Key Highlights
- Around-the-clock support if things go south
- Known for in-depth security testing
- Can handle large, complex environments
- Helps clients navigate compliance
- Good mix of strategy and technical services
Services
- Network audits
- Pen testing and threat analysis
- Cybersecurity strategy consulting
- Response planning and incident support
- Help with GDPR, PCI DSS, and other requirements
Contact and Social Media Information
- Website: www.nccgroup.com
- Address: XYZ Building 2 Hardman Boulevard Spinningfields Manchester, M3 3AQ
- Phone: +44 161 209 5200
- LinkedIn: www.linkedin.com/company/ncc-group
6. Kroll
Kroll is a global provider of cyber and data resilience services, helping businesses manage and mitigate the risks posed by cyber threats. The company’s team of experts brings decades of experience in security consulting, incident response, and cyber risk management. They focus on helping organizations detect and prevent cyber incidents before they escalate, as well as providing incident recovery and remediation support. In the UK, Kroll plays a key role in supporting companies with tailored incident response planning, aligning with national cybersecurity frameworks and regulatory expectations. Kroll’s security audits are designed to assess and enhance a company’s security posture by identifying vulnerabilities and recommending improvements.
Their services span across various industries, including financial services, healthcare, and government sectors. By combining threat intelligence with frontline expertise, Kroll helps clients build comprehensive, resilient cyber defenses. With a global presence and a strong footprint in the UK market, they are well-positioned to provide security audits that not only meet industry standards but also address the unique challenges of each client-including those related to incident response readiness and regulatory compliance.
Key Highlights
- Global expertise in cyber resilience and incident response
- CREST-accredited for penetration testing and incident response services
- Focus on proactive threat management and recovery
- Services tailored to meet industry-specific needs
- Extensive experience working with governments and large enterprises
Services
- Cybersecurity audits and risk assessments
- Incident response and recovery
- Penetration testing and vulnerability management
- Data breach notification services
- Threat exposure management and remediation
Contact and Social Media Information
- Website: www.kroll.com
- Address: The News Building, Level 6 3 London Bridge Street London, SE1 9SG
- Phone: +44 (0) 808 101 2168
- E-mail: mediarelations@kroll.com.
- LinkedIn: www.linkedin.com/company/kroll
- Instagram: www.instagram.com/wearekroll
- Twitter: x.com/KrollWire
- Facebook: www.facebook.com/wearekroll
7. The Cyphere
The Cyphere is a UK-based cybersecurity services provider specializing in penetration testing and network security audits. With a strong focus on providing practical and actionable insights, they help organizations identify and address vulnerabilities before they are exploited. Their audits take a holistic approach, assessing not just technical systems but also organizational processes, ensuring that businesses are fully prepared to defend against cyber threats. Cyphere’s team of cybersecurity professionals brings real-world experience and an adversarial mindset to their work, simulating potential attack scenarios to test the robustness of security measures.
Their services cover a wide range of industries, offering tailored cybersecurity solutions to meet the unique challenges faced by businesses. Cyphere prides itself on offering clear, comprehensive reports and providing continuous support for remediation efforts. This ensures that organizations can strengthen their defenses and reduce the risk of future breaches.
Key Highlights
- Focus on proactive, risk-based security assessments
- Specialization in penetration testing and vulnerability management
- No “tick-box” approach, with a focus on actionable insights
- Flexible and client-focused engagement model
- Extensive experience with businesses of all sizes
Services
- Penetration testing (web, mobile, network, IoT)
- Cybersecurity audits and risk assessments
- Compliance support (PCI DSS, GDPR, ISO 27001)
- Managed security services
- Attack surface analysis and remediation
Contact and Social Media Information
- Website: www.thecyphere.com
- Address: F1, Kennedy House, 31 Stamford St, Altrincham WA14 1ES, UK
- Phone: 0333 050 9002
- E-mail: info@thecyphere.com
- LinkedIn: www.linkedin.com/company/thecyphere
- Twitter: x.com/TheCyphere
8. IBM X-Force
IBM X-Force is a division within IBM that offers cutting-edge cyber security solutions, including comprehensive network security audits. Their services focus on threat intelligence, vulnerability management, and incident response. The X-Force team is comprised of hackers, responders, researchers, and analysts, each bringing a wealth of expertise in cyber threat mitigation. By simulating attacks and analyzing vulnerabilities, they provide businesses with the insights needed to enhance their security frameworks and prevent future breaches. In the UK, IBM X-Force supports organisations in strengthening their incident response planning, aligning with national standards and regulatory frameworks such as NCSC guidance and GDPR.
Their network security audits are built around offensive security principles, offering clients a detailed understanding of their current security posture. IBM X-Force’s approach is data-driven, leveraging advanced threat intelligence and industry-leading tools to ensure that businesses are prepared for any cyber threat. With a strong presence in the UK and global reach, they provide comprehensive security solutions to organizations of all sizes, helping them build resilient infrastructures and effective response strategies.
Key Highlights
- Global reach with a team of world-renowned security experts
- Offensive security approach through adversary simulation
- Comprehensive threat intelligence and vulnerability management
- 24/7 incident response and emergency services
- Proven experience working with large enterprises and government agencies
Services
- Penetration testing and vulnerability management
- Incident response and crisis management
- Threat intelligence and analysis
- Security risk assessments and remediation
- Compliance support for industry regulations
Contact and Social Media Information
- Website: www.ibm.com
- Address: Building C, IBM Hursley Office Hursley Park Road Winchester, Hampshire, SO21 2JN United Kingdom
- Phone: +44 (0) 23 92 56 1000
- LinkedIn: www.linkedin.com/company/ibm
- Instagram: www.instagram.com/ibm
- Twitter: x.com/ibm
9. Cisco
Cisco is a global leader in providing comprehensive network security solutions. Their approach combines cutting-edge technology with decades of expertise to help organizations secure their networks against evolving threats. Cisco offers a range of network security audit services that are designed to identify vulnerabilities, assess risk, and provide detailed recommendations for enhancing security posture. With a focus on proactive risk management, Cisco helps organizations develop robust defense strategies that align with their specific needs and threat landscape. In the UK, Cisco supports businesses in strengthening their incident response planning, ensuring readiness against region-specific threats and compliance with standards such as NCSC guidelines.
Their services are particularly beneficial for businesses looking to secure their infrastructure in the era of AI and cloud computing. Cisco’s security audits are comprehensive, covering everything from network vulnerabilities to cloud and endpoint security, and are delivered by a team of experts who understand the complexities of modern IT environments. With a strong presence in the UK, Cisco’s technology is designed to ensure that organizations are resilient, with advanced tools that enable continuous monitoring and rapid response to potential threats-key components of any effective incident response strategy.
Key Highlights:
- Decades of expertise in network security
- AI and cloud-native solutions for enhanced threat detection
- Proactive risk management approach
- Tailored security audits for different organizational needs
- Comprehensive security coverage from network to endpoint
Services:
- Network security audits and risk assessments
- Cloud security and threat management
- Penetration testing and vulnerability assessments
- Endpoint and device security solutions
- Security monitoring and incident response
Contact and Social Media Information:
- Website: www.cisco.com
- Address: 9-11 New Square,Bedfont Lakes, Feltham, Middlesex, TW14 8HA United Kingdom
- Phone: +1 408 526 4000
- E-mail: legal-cri@cisco.com
- LinkedIn: www.linkedin.com/company/cisco
- Instagram: www.instagram.com/cisco
- Twitter: x.com/Cisco
- Facebook: www.facebook.com/cisco
10. Check Point
Check Point is a cybersecurity company that focuses on safeguarding businesses from the full spectrum of cyber threats. Their network security audits are comprehensive and aimed at identifying weaknesses across a company’s digital infrastructure. With a special emphasis on protecting the hybrid mesh network, Check Point provides detailed security audits to assess the risks and vulnerabilities of an organization’s network environment. In the UK, their services are increasingly sought after by companies looking to strengthen incident response planning and align with national cybersecurity standards. Their solutions are designed to provide both immediate threat mitigation and long-term risk management strategies, ensuring that organizations can maintain a secure IT ecosystem.
The company is known for its proactive approach to cybersecurity, offering a suite of services that cover everything from cloud security to advanced firewall protections. Their network security audits help businesses understand the state of their defenses and provide actionable insights into how to improve their security posture. With a growing footprint in the UK market, Check Point’s expertise and advanced tools allow companies to stay one step ahead of evolving threats, ensuring their network remains resilient and their incident response capabilities are ready for real-world challenges.
Key Highlights:
- Focus on hybrid mesh network security
- Comprehensive network security audits and risk assessments
- Advanced firewall and threat prevention solutions
- Proactive security strategies for both on-premises and cloud environments
- Strong focus on real-time threat detection and response
Services:
- Network security audits and penetration testing
- Cloud security and hybrid network protection
- Threat prevention and firewall solutions
- Risk management and compliance services
- Incident response and disaster recovery
Contact and Social Media Information:
- Website: www.checkpoint.com
- Address: 85 London Wall, 4th Floor, London, EC2M 7AD, United Kingdom
- Phone: +44-125-333-5558
- E-mail: press@checkpoint.com
- LinkedIn: www.linkedin.com/company/check-point-software-technologies
- Instagram: www.instagram.com/checkpointsoftware
- Twitter: x.com/checkpointsw
- Facebook: www.facebook.com/checkpointsoftware
11. Sophos
Sophos offers a range of security solutions aimed at protecting businesses from a variety of cyber threats. Their network security audits are designed to provide in-depth assessments of an organization’s IT infrastructure, identifying vulnerabilities and offering practical recommendations for improvement. Sophos focuses on providing businesses with comprehensive security that covers endpoints, cloud environments, and networks, helping organizations stay ahead of emerging threats. Their approach integrates advanced AI technology to detect and block threats before they can cause harm. In the UK, Sophos plays a key role in supporting incident response planning, helping organisations align with national cybersecurity standards and build proactive defence strategies.
In addition to their auditing services, Sophos provides ongoing monitoring and threat response solutions, ensuring businesses are continuously protected. Their emphasis on both prevention and detection allows organizations to maintain secure and resilient IT systems, while their user-friendly solutions make security management more accessible. With a strong presence in the UK market, Sophos’s reputation for delivering reliable and actionable security insights has made them a trusted partner for businesses worldwide, particularly those seeking robust incident response capabilities.
Key Highlights:
- AI-driven network security for proactive threat management
- Comprehensive network security audits and vulnerability assessments
- End-to-end protection for endpoints, networks, and cloud environments
- Ongoing monitoring and real-time threat response
- Easy-to-use solutions designed for businesses of all sizes
Services:
- Network security audits and risk assessments
- Endpoint and device security solutions
- Cloud security and infrastructure protection
- Managed detection and response (MDR)
- Threat intelligence and security consulting
Contact and Social Media Information:
- Website: www.sophos.com
- Address: The Pentagon Abingdon Science Park Abingdon OX14 3YP United Kingdom
- Phone: +44 (0)8447 671131
- E-mail: sales@sophos.com
- LinkedIn: www.linkedin.com/showcase/sophos-partners
- Twitter: x.com/SophosPartners
12. KPMG UK
KPMG UK provides a range of professional services, including network security audits and risk management solutions. They help businesses identify vulnerabilities within their networks and offer strategic recommendations to mitigate risks. KPMG’s approach to network security audits combines technical assessments with strategic insights, ensuring that organizations can both understand their current security posture and improve it over time. Their audits cover everything from threat detection to compliance with industry regulations, helping companies stay secure in an increasingly complex digital landscape. Within the UK, KPMG plays a key role in helping organisations strengthen their incident response planning, aligning with national cybersecurity frameworks and regulatory obligations.
KPMG’s expertise in network security extends beyond just auditing. They offer continuous support to help organizations implement necessary changes and monitor their systems for ongoing risks. Their holistic approach ensures that businesses can not only protect their data but also meet compliance standards and industry best practices. For UK-based companies, this includes building resilient incident response capabilities that address both immediate threats and long-term operational continuity.
Key Highlights:
- Comprehensive network security audits and risk assessments
- Focus on regulatory compliance and industry best practices
- Continuous monitoring and risk mitigation strategies
- Expertise across various industries, including financial services and healthcare
- Strong focus on proactive security and long-term resilience
Services:
- Network security audits and penetration testing
- Compliance services (ISO 27001, GDPR, PCI DSS)
- Risk management and vulnerability assessments
- Incident response and recovery planning
- Cybersecurity consulting and training
Contact and Social Media Information:
- Website: home.kpmg
- Address: 58 Clarendon Road, Watford, WD17 1DE
- Phone: +44 1923 214 000
- LinkedIn: www.linkedin.com/company/kpmg-uk
- Twitter: x.com/kpmguk
13. Darktrace
Darktrace specializes in cybersecurity solutions that leverage AI to proactively defend organizations against both known and unknown threats. Their security audits focus on identifying vulnerabilities across an organization’s entire digital infrastructure, including networks, endpoints, and cloud environments. Darktrace uses its innovative AI-driven platform to provide real-time visibility and autonomous response to potential threats, helping businesses detect risks earlier and respond faster. This approach allows organizations to enhance their security posture without disrupting operations. Headquartered in the UK, Darktrace plays a key role in supporting incident response planning across sectors, helping organisations align with national cybersecurity frameworks and respond effectively to emerging threats.
Their network security audits are designed to offer actionable insights that organizations can use to strengthen their defenses. With a focus on AI, Darktrace is able to provide adaptive solutions that learn from an organization’s unique environment, ensuring that threats are detected and neutralized with precision. The company’s platform is used by thousands of customers worldwide-including many UK-based enterprises-to secure their digital assets and maintain resilience against cyberattacks through intelligent, automated incident response capabilities.
Key Highlights:
- AI-powered security solutions for real-time threat detection and response
- Comprehensive network security audits and vulnerability assessments
- Proactive risk management across networks, cloud, and endpoints
- Autonomous response capabilities to stop threats faster
- Used by organizations across various industries to enhance cyber resilience
Services:
- Network security audits and risk assessments
- AI-driven threat detection and response
- Cloud and endpoint security
- Proactive exposure management
- Incident response and recovery services
Contact and Social Media Information:
- Website: www.darktrace.com
- Address: 80 Strand London WC2R 0DT
- Phone: +44(0)20 7072 1769
- E-mail: sales@darktrace.com
Conclusion
As businesses continue to rely on digital systems, the importance of network security audits cannot be overstated. In the UK, there are numerous companies offering expert audit services that can help identify risks, strengthen defenses, and keep sensitive data secure. Whether you’re looking to comply with regulations, safeguard against potential breaches, or simply ensure the integrity of your systems, these audit specialists provide valuable insights and practical solutions.
Choosing the right company for your network security audit is crucial. With the right partner, you can be confident that your business is equipped to handle any security challenges that come your way. By leveraging the expertise of these UK-based firms, you’re taking a proactive step in protecting your network and ensuring long-term security.
