Streamline Security,
Simplify Compliance
UK Penetration Testing | Work directly with your assigned tester. No generic processes, no pre-sales teams. Uncover real threats and meet compliance requirements like ISO, PCI DSS, SOC2 & DSPT.




Speak to a security expert today:
Experienced penetration testers with a modern approach
Tailored
Scoping
Work directly with our experts to define exactly what matters for your business. No generic processes, just focused solutions.
Thorough
Testing
Expose every risk with deep, hands-on testing and real-world attack simulations that leave nothing to chance.
Professional
Reporting
Get clear, actionable findings with concise reports, making them easy to understand, prioritise, and fix what really matters.
Continuous
Support
Stay ahead of threats with ongoing expert advice and long-term guidance, supporting you every step of the way.
Testing Experts with 20+ Years of Industry Experience
At CodeShield, our UK penetration testing team brings 20+ years of combined expertise delivering practical, results-driven security solutions tailored to your business.
Find & Fix Vulnerabilities: Uncover hidden threats with expert-led testing and gain true confidence in your security.
Simplify Compliance: Navigate ISO, PCI DSS, SOC 2 & DSPT with clear, actionable guidance, not just box-ticking.
Strengthen Your Defences: Prioritise real risks and improve your security posture with insights from seasoned professionals.
Save Time & Reduce Complexity: We handle the technical details, letting you stay focused on your business.
Custom penetration testing that fits your needs
We deliver a full range of tailored penetration testing services designed around your organisation’s unique needs and challenges. Our projects often combine multiple testing techniques to ensure maximum coverage and real-world assurance. Below is a snapshot of the most common types of testing we provide:
Web Application Testing
Identify vulnerabilities, including the OWASP Top 10
Provide assurance to clients, stakeholders, and auditors
Test across all angles, including API layers
Network Testing
Conduct testing aligned with the PTES methodology
Review services, patch levels, and configurations
Cover both external and internal environments
Cloud Testing
Assess AWS, Azure, and GCP environments
Cover IaaS, PaaS, and Microsoft 365 configurations
Identify misconfigurations across cloud security layers
Red Team Testing
Simulate real-world attacks with defined objectives
Combine multiple tactics to mirror real threats
Identify gaps across people, process, and technology
Social Engineering
Boost employee awareness through phishing and vishing
Simulate real-world social engineering attempts
Tailor training using results from hands-on testing
Mobile Application Testing
Uncover mobile threats using the OWASP Mobile Top 10
Test both iOS and Android platforms thoroughly
Detect insecure code, APIs, and app logic flaws
Book your free cyber security assessment consultation. Speak to our pen testing UK experts today.
Trusted by organisations across the UK
“We have used a couple of companies for pen tests in the past, but never had such an outstanding experience. The team really got to grips with our application and took a much more targeted and methodical approach to the testing. Couldn’t be happier with the service received.”
Chris Clarkson - Technical Director
“The team listened to what we wanted, added their own expertise and recommendations and then performed a bespoke test with meaningful, well set out results. The follow-up meeting between our dev team and the tester was well run and respectful. I highly recommend CodeShield and will be engaging them again for our future testing.”
Daren Martin - Founder & CEO
“We had a great experience working with CodeShield. Their team was professional and responsive, and the process was clear, fair, and well-communicated throughout. They also took the time to adjust their solution to better suit our needs. We’re pleased with our decision to work with them and would recommend their services.”
Hanan Amar - CTO
“We had a great experience using CodeShield for our Penetration Test. Tom and Dan ensured the whole process ran smoothly and we were very pleased with the quality of the testing and the report. Post-test support was also excellent.”
Brian Eyre - Engineering Delivery Manager
“Tom, Daniel, Euan and the team were very professional and explained in simple terms where we needed to make improvements. Would highly recommend.”
Paul Esson - Marketing Consultant
“Tom and team helped greatfully to arrange our pentest to suit our scope and requirements. We will be working with them again in the near future for further tests. Well done guys.”
Adrian Morris - Director
Built on standards, backed by certifications
A closer look at our penetration testing process
1. Scoping
We collaborate with you to define the scope, objectives, and boundaries of the penetration test. This includes identifying the systems, applications, or networks to be tested, along with any exclusions or limitations. Key objectives such as identifying vulnerabilities, testing compliance requirements, or assessing security posture are established. Clear rules of engagement ensure alignment with your goals while minimising the risk of operational disruption.
2. Intel Gathering
We conduct reconnaissance to collect information about the target environment. This includes identifying exposed services, IP addresses, domains, and any publicly accessible information that could be leveraged by attackers. The data collected during this phase forms the foundation for identifying potential vulnerabilities and attack vectors in subsequent stages.
3. Vulnerability Analysis
Our team systematically evaluates the target systems for vulnerabilities. This includes identifying misconfigurations, unpatched software, weak authentication mechanisms, or insecure communication channels. The analysis may involve automated scanning tools as well as manual testing to ensure thoroughness and accuracy. Vulnerabilities are prioritised based on their potential impact and exploitability.
4. Exploitation
In this phase, we attempt to exploit identified vulnerabilities to determine their real-world impact. This may involve gaining unauthorised access, escalating privileges, or accessing sensitive data. Exploitation activities are conducted in a controlled manner to ensure system stability and data integrity, demonstrating how an attacker could leverage weaknesses to compromise the target environment.
If exploitation is successful, we assess the potential for further compromise, such as pivoting within the network, maintaining persistence, or accessing additional resources. This phase mimics real-world attacker behavior to understand the full scope of impact and identify additional security gaps.
5. Reporting
We provide a comprehensive report detailing the vulnerabilities discovered, the methods used to exploit them, and their potential impact on your organisation. Each finding is accompanied by practical recommendations for remediation, prioritised by severity and risk. The report is designed to be actionable for technical teams while being accessible to non-technical stakeholders.
6. Debriefing
The engagement concludes with a debriefing session to review the results and discuss their implications. We provide an overview of the vulnerabilities, demonstrate potential exploitation scenarios, and answer any questions. This session ensures a clear understanding of the findings and offers actionable guidance for strengthening your security posture.
Ready for pen testing that supports you at every step?
Get a free penetration test quote today:
Excellent rating
Based on 10 reviewsTrustindex verifies that the original source of the review is Google. Friendly and professional penestration testing for our web app Alan WhiteTrustindex verifies that the original source of the review is Google. We recently engaged Code Shield to carry out penetration testing for one of our clients, and the service was nothing short of excellent. Both Tom and Dan were extremely knowledgeable and professional throughout the process. Their clear communication and technical expertise made the entire experience smooth and efficient. We look forward to working with them again when the need arises and would highly recommend their services. Darren WalshTrustindex verifies that the original source of the review is Google. We had a great experience working with CodeShield. Their team was professional and responsive, and the process was clear, fair, and well-communicated throughout. They also took the time to adjust their solution to better suit our needs. We’re pleased with our decision to work with them and would recommend their services. Hanan AmarTrustindex verifies that the original source of the review is Google. We've used a number of CREST assured pen testing companies over the last 10 years, however CodeShield have been the first to exceed my expectations. The team listened to what we wanted, added their own expertise and recommendations and then performed a bespoke test with meaningful, well set out results. The follow-up meetings between our dev team and the testers was well run and respectful. I highly recommend CodeShield and will be engaging them again for our future testing. Daren MartinTrustindex verifies that the original source of the review is Google. We had a great experience using CodeShield for our Penetration Test. Tom and Dan ensured the whole process ran smoothly and we were very pleased with the quality of the testing and the report. Post-test support was also excellent. Brian EyreTrustindex verifies that the original source of the review is Google. Tom, Daniel, Euan and the team were very professional and explained in simple terms where we needed to make improvements. Would highly recommend. Paul EssonTrustindex verifies that the original source of the review is Google. Tom and team helped greatfully to arrange our pentest to suit our scope and requirements. We will be working with them again in the near future for further tests. Well done guys. Adrian MorrisTrustindex verifies that the original source of the review is Google. We have used a couple of companies for pen tests in the past, but never had such an outstanding experience. The team really got to grips with our application and took a much more targeted and methodical approach to the testing. Couldn't be happier with the service received. Chris Clarkson