Network security audits aren’t a checkbox exercise – they’re the groundwork for stable systems, real risk visibility, and smarter infrastructure decisions. In the UK, demand for reliable audit partners continues to grow as firms recheck exposure, enforce compliance, and adapt to new threat surfaces. This list profiles standout companies offering hands-on, detail-oriented audits. Each entry is grounded in actual capability – not buzzwords – with a focus on process clarity, tooling, and measurable outcomes.
1. A-listware
A-listware work with clients who need reliable network security audits as part of a wider effort to strengthen their infrastructure and reduce surface-level risks. Our approach focuses on visibility and structure – mapping out vulnerabilities, misconfigurations, and blind spots without turning the process into a black box.
Our security services are grounded in routine and detail. We don’t rely on one-time snapshots – we look at how systems behave over time, especially in cloud and hybrid environments. Each audit is supported by clear documentation, technical walkthroughs, and practical remediation paths. We handle this work both for global partners and companies operating in the United Kingdom, aligning audits to local risk profiles and regulatory frameworks.
Key Highlights:
- Support for both standalone and ongoing audit engagements
- Workable remediation plans, not just long lists of issues
- Experience with both on-prem and cloud-first environments
- UK-specific security practices and data protection needs covered
- Infrastructure and application layers reviewed together where needed
Services:
- Network vulnerability assessments
- Cloud security posture reviews
- Penetration testing coordination
- Secure configuration audits
- Infrastructure compliance mapping
Contact Information:
- Website: a-listware.com
- E-mail: info@a-listware.com
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone: +44 (0)142 439 01 40
2. RashComm Pvt. Limited
RashComm offers network and security auditing services structured around a centralised approach to multi-platform environments. Their system collects audit data from a range of machines including mainframes, Windows servers, and Linux boxes, feeding it into a unified database for analysis. This allows administrators to access host-level logs in a consistent format, improving visibility across the infrastructure.
RashComm focuses on simplifying oversight by providing dashboard-level insight, often through side-by-side graph comparisons that help surface anomalies like failed authorisations or system access patterns. The audit solution is positioned as part of a broader set of services covering datacentre, cloud, and custom network configurations.
Key Highlights:
- Cross-platform data collection with agent-based integration
- Centralised dashboard for comparing multi-system events
- Built-in reports and alerts with customisation options
- Visual breakdown of audit findings via multi-graph views
- Integration with other network and datacentre services
Services:
- Network and security log aggregation
- Host-level audit tracking for Windows, Linux, and mainframe systems
- Predefined compliance and access reports
- Visual alert systems and graph-based reporting
- Database storage of audit logs for long-term tracking
Contact Information:
- Website: rashcomm.co.uk
- E-mail: contact@rashcomm.co.uk
- Address: Airport House, Purley Way, Croydon CR0 0XZ
- Phone: (+44) 0208 405 2545
3. Performance Networks
Performance Networks delivers network audit services across the UK, focusing on both infrastructure and security posture. Their process begins with a detailed inventory across all physical and virtual assets, including firewalls, routers, cloud components, and backup systems. The goal is to identify inefficiencies, outdated hardware, and security vulnerabilities before those become larger issues.
These may include upgrades, reconfiguration, or policy-level changes. The audits are often used in hospitality, warehouse logistics, and educational settings where distributed connectivity and uptime are critical. Their audits also cover compliance readiness and alignment with standards like HIPAA or PCI.
Key Highlights:
- Covers hardware, software, cloud and on-site configurations
- Tailored analysis with practical, business-aligned outcomes
- Focus on readiness for upgrades and compliance standards
- Regularly works in sector-specific environments (retail, hospitality, education)
- Emphasis on fixing inefficiencies, not just flagging them
Services:
- Full-device network inventory and software mapping
- Security access reviews and policy evaluations
- Backup systems and DR plan validation
- Configuration analysis for performance tuning
- Industry regulation readiness checks
Contact Information:
- Website: www.performancenetworks.co.uk
- Twitter: x.com/PerformanceN
- LinkedIn: www.linkedin.com/company/performance-networks-limited
- Address: 8th Floor, The Gridiron Building, 1 Pancras Square, London, N1C 4AG
- Phone: +44 (0) 115 718 2884
4. AZTech IT Solutions
AZTech IT Solutions operates out of Milton Keynes and provides network security auditing and consulting as part of a broader IT services suite. Their audits focus on evaluating integrity, confidentiality, and availability of data flows, especially across WAN, LAN, and hybrid setups. The assessments help pinpoint risks from misconfigured access, ageing devices, or exposure to malware and spyware.
The process includes pre-audit review of firewall logs, OS-level checks, and targeted risk scoring. Audit reports come with follow-up suggestions and, if needed, implementation support like patching, rule optimisation, or deploying additional filters. Their consulting approach supports internal teams by taking over regular audit cycles or stepping in during higher-risk periods.
Key Highlights:
- Focus on firewall and perimeter security reviews
- Suitable for small to mid-sized businesses with expanding networks
- Support for ongoing or one-off network audits
- Aligns audits with regulatory criteria like PCI-DSS
- Covers both local office networks and wider distributed setups
Services:
- Firewall configuration auditing and hardening
- Network security posture review
- Vulnerability identification and remediation planning
- Endpoint protection and malware detection advisory
Contact Information:
- Website: www.aztechit.co.uk
- E-mail: info@aztechit.co.uk
- Facebook: www.facebook.com/AztechITSolutions
- Twitter: x.com/aztechit
- LinkedIn: www.linkedin.com/company/aztech-it-solutions
- Instagram: www.instagram.com/aztechit
- Address: 15-19 Bloomsbury Way, London, WC1A 2BA
- Phone: 03300 949420
5. Opinnate
Opinnate focuses on network security audits by aligning vulnerability discovery, compliance checks, and policy optimisation under one umbrella. Their audit process combines automated scanning, manual testing, and review of internal procedures to assess how security measures function in practice. Tools like Nessus, Metasploit, and SIEM platforms are part of their approach to help map out weak spots and simulate real-world attacks.
A key element in their offering is the NSPM platform, which helps manage firewall rules and enforce policy changes after audit findings. Instead of stopping at diagnostics, Opinnate aims to support follow-up execution – ensuring firewall policies remain aligned with regulatory frameworks such as GDPR, HIPAA, and PCI DSS. Services are available to UK-based organisations and tailored to meet region-specific compliance needs.
Key Highlights:
- Combines audit diagnostics with ongoing firewall policy management
- Works across automated scans, pen testing, and policy reviews
- Prioritises vulnerabilities for action based on potential impact
- Helps align systems with regulatory frameworks
- NSPM platform enables post-audit policy adjustments
Services:
- Risk assessment and vulnerability scanning
- Penetration testing and incident response simulation
- Firewall rule review and optimisation
Contact Information:
- Website: opinnate.com
- E-mail: info@opinnate.com
- Twitter: x.com/OpinnateSec
- LinkedIn: www.linkedin.com/company/opinnate
- Instagram: www.instagram.com/opinnatesecurity
- Address: 8, 320 Tubbenden Lane South, Bromley, BR6 7DN, United Kingdom
6. C3IA
C3IA delivers network security audit and compliance services aimed at verifying how well existing security measures perform under scrutiny. Their approach includes detailed inspections of network infrastructure components such as firewalls, switches, and wireless configurations, alongside a broader review of IT security policies.
Services are structured to support both small organisations and large enterprises across the UK, with audits tailored to sector-specific requirements. In addition to internal reviews, C3IA provides compliance assurance aligned with recognised standards. Work is carried out by certified professionals familiar with government frameworks, including those associated with the National Cyber Security Centre.
Key Highlights:
- Network and infrastructure audits covering physical and wireless assets
- Internal reviews conducted by certified security professionals
- Focus on closing configuration gaps and reducing risk exposure
- Tailored audits based on business scale and industry context
- UK-aligned standards and compliance frameworks included
Services:
- Network security auditing
- IT security reviews
- Firewall and switch configuration analysis
- Internal policy validation
- Compliance checks and reporting
Contact Information:
- Website: c3ia.co.uk
- E-mail: info@c3iasolutions.co.uk
- Twitter: x.com/C3IA_UK
- LinkedIn: www.linkedin.com/company/c3ia
- Address: 10 Winchester Place, North Street, Poole, Dorset, BH15 1NX
- Phone: +44 (0)1202 721123
7. IntaForensics
IntaForensics provides cyber security audits that assess policies, controls, and technical infrastructure to help firms understand their current exposure and plan corrective action. Audits follow recognised standards such as ISO/IEC 27001 and NCSC guidelines. Focus areas include network protection, endpoint controls, malware defence, and incident response planning.
The process combines documentation review with technical inspection and is supported by post-audit remediation planning. Each audit is scoped based on the specific needs of the organisation, covering cloud services, access controls, and event logging. Services are positioned for organisations preparing for formal certification or aiming to strengthen their posture through external assessment.
Key Highlights:
- Framework-based auditing (ISO/IEC 27001, NCSC, Cyber Essentials)
- Risk analysis paired with step-by-step mitigation guidance
- Practical support for post-audit improvement
- Suited for regulated and high-exposure sectors
- Covers both process and technical security dimensions
Services:
- Network and system-level security audits
- User access and authentication review
- Malware protection assessment
- Secure configuration and patching validation
- Logging, monitoring, and incident handling analysis
Contact Information:
- Website: www.intaforensics.com
- Twitter: x.com/IntaForensics
- LinkedIn: www.linkedin.com/company/intaforensics-ltd
- Address: The Courtyard, Eliot Business Park, Nuneaton, Warwickshire, CV10 7RJ
- Phone: 0247 77 17780
8. Cyphere
Cyphere focuses on penetration testing within the broader scope of network security auditing. Tests simulate real-world threats across internal and external environments to highlight exploitable weaknesses. Each project begins with scoping, followed by reconnaissance, scanning, exploitation, and debrief. Reporting includes detailed technical findings and prioritised remediation steps.
Work is performed across a range of infrastructure types, from firewalls and endpoint devices to internal networks and cloud assets. Cyphere also provides Active Directory security assessments and firewall configuration reviews. Their methodology is grounded in manual testing practices, not just automated scanning, allowing for contextual insights into how systems might be compromised.
Key Highlights:
- Realistic simulation of internal and external threats
- Manual exploitation of discovered vulnerabilities
- Step-by-step penetration testing lifecycle
- Infrastructure-focused testing with cloud and endpoint coverage
- Risk-based remediation plans included in every report
Services:
- Internal and external penetration testing
- Active Directory security checks
- Network device and firewall hardening review
- Password and credential analysis
Contact Information:
- Website: thecyphere.com
- E-mail: info@thecyphere.com
- Twitter: x.com/TheCyphere
- LinkedIn: www.linkedin.com/company/thecyphere
- Address: 71-75, Shelton Street,Covent Garden,London, WC2H 9JQ
- Phone: 0333 050 9002
9. CloudTech24
CloudTech24 provides network security audit services as part of a broader managed cybersecurity offering. Their work typically includes firewall security reviews, vulnerability assessments, penetration testing, and detection of threats via managed monitoring systems. Infrastructure components are checked against modern standards, and weaknesses are flagged for remediation.
Audit results feed into a continuous security strategy built around 24/7 threat detection and layered protection. Work often extends beyond internal checks to include dark web monitoring, endpoint evaluation, and incident response planning. With dedicated teams operating across multiple UK locations, audits can be scoped to match local or multi-site setups.
Key Highlights:
- Network security audits integrated into ongoing monitoring
- Vulnerability assessments and penetration testing included
- Firewall setup and policy review with configuration tracking
- Covers both on-site and cloud environments
- Incident response planning aligned to audit outcomes
Services:
- Firewall security audits
- Vulnerability management
- Penetration testing
- Dark web monitoring
- Endpoint and antivirus evaluation
- Managed detection and response
- Cyber Essentials alignment
Contact Information:
- Website: cloudtech24.com
- E-mail: info@cloudtech24.com
- Facebook: www.facebook.com/CloudTech24
- Twitter: x.com/CloudTech24
- LinkedIn: www.linkedin.com/company/cloudtech24
- Address: Clockbarn, Tannery Lane, Send, Woking, Surrey, GU23 7EF
- Phone: +44 (0) 1483 608 388
10. Eco Green IT Recycling
Eco Green IT Recycling conducts cyber security audits aimed at identifying network and system-level vulnerabilities across workstations, communication setups, and servers. Their audits follow international standards such as ISO 27002 and COBIT, covering both technical and procedural security gaps. Reports highlight risk levels, suggest mitigations, and often tie into legal and compliance considerations like GDPR.
Audits span several types including internal checks, perimeter defences, intrusion testing, and web application reviews. Some scenarios also call for forensic analysis to investigate security events. The company pairs audits with recommendations on reducing exposure by removing outdated IT assets, training users, and improving encryption and logging practices.
Key Highlights:
- Security audits follow ISO and COBIT benchmarks
- Internal, perimeter, and web-based audits supported
- Audit types include intrusion and forensic assessments
- Focus on both prevention and detection
- Paired with secure IT disposal and recycling
Services:
- Network and infrastructure auditing
- Operating system and application analysis
- Vulnerability detection and classification
- Security as a service (SaaS-based monitoring tools)
Contact Information:
- Website: ecogreenitrecycling.co.uk
- E-mail: recycling@ecogreenitrecycling.co.uk
- Facebook: www.facebook.com/ecogreenitrecycling
- Twitter: x.com/ecogreenituk
- Address: Unit 3, 3 Gibbons Street Nottingham NG7 2SB
- Phone: 033 0124 3053
Conclusion
Network security audits aren’t just about ticking boxes anymore. With threat landscapes shifting constantly, companies need partners who can actually get into the guts of their infrastructure and point out what’s off, not just what’s outdated. Whether it’s routine firewall audits, penetration testing, or tracing suspicious access logs, the companies listed here approach audits with that mindset – not just as compliance, but as practical risk reduction.
For businesses in the UK, finding the right audit provider means looking past flashy language and focusing on who understands the stack, asks the right questions, and doesn’t disappear after the report lands. A good audit doesn’t fix everything – but it shows you exactly where you stand. And that clarity is what keeps things running when it counts.
