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.

Rated 5 Stars on Google

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.

UK Penetration Testing Team

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.

Contact Our Experts for a Penetration Test Quote Today

Trusted by organisations across the UK

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:

Cyber security insights & resources:

Web Application Penetration Testing

Simulate real-world attacks to uncover vulnerabilities in your web applications, before attackers can exploit them.

CodeShield’s expert-led testing evaluates your apps across all layers, identifying weaknesses and helping you secure critical assets with confidence.

  • Gain real-world insight into how attackers could exploit your application

  • Identify critical risks, such as untrusted data injection and flawed input handling

  • Map the most likely attack paths through your application

  • Provide assurance to stakeholders, clients, and partners that your app is secure

  • Meet compliance standards including ISO 27001, GDPR, PCI DSS, and more

network penetration testing

Simulate real-world attacks to assess the security of your internal and external networks.

CodeShield’s expert-led testing identifies vulnerabilities across your infrastructure and shows how attackers could exploit them to move laterally and escalate access.

  • Gain full visibility into vulnerabilities across your network

  • Understand attacker movement, including privilege escalation and lateral spread

  • Assess real-world business impact of exploited weaknesses

  • Provide assurance to stakeholders, clients, and regulators

  • Achieve compliance with ISO 27001, GDPR, PCI DSS, and other standards

Cloud Penetration Testing

Simulate targeted attacks to assess the security of your cloud-based systems, applications, and infrastructure.

CodeShield’s expert-led testing identifies misconfigurations, access issues, and platform-specific risks across AWS, Azure, GCP, and more.

  • Identify weak points across AWS, Azure, GCP, and hybrid environments

  • Uncover insecure access controls in cloud storage and services

  • Reveal vulnerable perimeters and misconfigurations in your cloud setup

  • Secure IaaS, PaaS, and SaaS deployments from top to bottom

  • Improve your SDLC by integrating security into cloud development early

Specialist Red Team Testing

Simulate a targeted, multi-layered attack to uncover hidden weaknesses across your organisation.

CodeShield’s red team engagements use an adversarial approach to test your defences across people, processes, and technology.

  • Simulate real-world, objective-driven attacks against your organisation

  • Gain a true understanding of your overall security posture and response capability

  • Test resilience under realistic conditions, including social engineering and lateral movement

  • Combine multiple techniques to reveal complex, chained vulnerabilities

  • Define a tailored scope in collaboration with certified professionals

Social Engineering

Simulate phishing, vishing, and other social engineering attacks to assess your team’s real-world awareness and response.

CodeShield’s expert-led testing identifies human vulnerabilities and helps you strengthen your organisation’s last line of defence.

  • Evaluate how susceptible employees are to real-world manipulation and deception tactics

  • Test the effectiveness of your security policies and internal controls in practice

  • Develop targeted awareness training based on real behavioural insights

  • Discover publicly available intel that attackers could use to launch an attack

Mobile Application Penetration Testing

Simulate real-world attacks to assess your mobile app’s security across iOS and Android platforms.

CodeShield’s testing identifies vulnerabilities in app logic, code, and APIs—helping you protect users and maintain trust.

  • Gain real-world visibility into mobile app vulnerabilities before attackers do

  • Identify weak security controls and flawed implementation strategies

  • Give users and clients full confidence in your application’s security

  • Understand the business impact of mobile-specific threats and exposures

  • Provide assurance to stakeholders that your app meets high security standards