CREST-Aligned Penetration Testing Services in London
Penetration testing in London is essential for businesses operating in one of the world's leading financial and technology hubs. YUPL's UK-based ethical hacking team delivers comprehensive security assessments across London, from Westminster and the City of London to Canary Wharf and beyond. Our CREST-aligned methodologies ensure London businesses receive actionable insights that strengthen their security posture against evolving cyber threats.
Unlike automated vulnerability scanners, our London-based penetration testers think like attackers. We chain vulnerabilities, exploit business logic flaws, and demonstrate real-world attack scenarios that quantify actual risk to your organisation. Serving businesses across Greater London, we offer flexible on-site and remote testing options. Every engagement delivers a detailed report with prioritised remediation guidance and executive summaries tailored for London's regulatory environment.
Our London Penetration Testing Services
Web Application Testing
OWASP Top 10, authentication bypass, injection attacks, session management, business logic flaws
Network Penetration Testing
Internal/external assessments, Active Directory attacks, lateral movement, privilege escalation
API Security Testing
REST & GraphQL testing, authentication flaws, broken access controls, data exposure risks
Mobile App Security
iOS & Android testing, reverse engineering, API interception, secure storage analysis
Cloud Security Assessment
AWS, Azure, GCP configuration review, IAM policy analysis, cloud-native attack paths
Red Team & Social Engineering
Full adversary simulation, phishing campaigns, pretexting, physical security assessments
Our Penetration Testing Methodology
We follow industry-standard frameworks including CREST, OWASP Testing Guide, PTES, and NIST to ensure consistent, thorough assessments. Our London-based security team combines automated scanning with expert manual testing for comprehensive coverage that meets UK regulatory standards.
Scoping &
Reconnaissance
We define objectives, rules of engagement, and target scope with your London team. Our testers gather intelligence using OSINT techniques to map your attack surface and identify potential entry points across your infrastructure.
Vulnerability Discovery
& Exploitation
Manual testing combined with automated tools identifies vulnerabilities. We safely exploit findings to prove impact and chain vulnerabilities to demonstrate realistic attack scenarios relevant to London businesses.
Reporting &
Remediation Support
Detailed technical reports with CVSS scoring, proof-of-concept evidence, and prioritised remediation steps. We include executive summaries and offer post-test verification of fixes at no additional cost.
Why Choose YUPL for Penetration Testing in London?
As a UK-based cybersecurity company with deep London market knowledge, we understand the regulatory landscape affecting businesses in the City of London, Canary Wharf, and Westminster. Our London penetration testing services help organisations achieve and maintain compliance with PCI DSS, ISO 27001, SOC 2, GDPR, and FCA regulations for financial services. We offer flexible on-site testing across all London boroughs and can work outside business hours to minimise disruption.
CREST-Aligned
Industry-leading methodologies and standards
Certified Testers
OSCP, OSWE, CREST CRT, CEH, CISSP
London-Based Team
On-site testing available across Greater London
Dev Integration
We help fix issues, not just find them
Flexible Models
One-off, retainer, or continuous testing
Free Retesting
Verify fixes within 30 days at no cost
Serving London Businesses Across All Sectors
Our ethical hacking services in London support organisations across financial services (City of London, Canary Wharf), technology startups (Shoreditch, Tech City), healthcare, retail, professional services (Westminster), and government sectors. We understand the unique security challenges facing London businesses, from FCA compliance requirements for financial institutions to GDPR considerations for data-driven companies. Our UK-based team provides rapid response times and can schedule on-site assessments across all London locations, from central London to Greater London boroughs.
Frequently Asked Questions
Penetration testing simulates real-world cyber attacks to identify vulnerabilities in your systems before malicious hackers exploit them. For London businesses, particularly those in regulated sectors like finance (City of London, Canary Wharf) and healthcare, it's essential for protecting sensitive data, meeting compliance requirements (PCI DSS, ISO 27001, FCA regulations), and demonstrating due diligence to customers and partners. Regular pen testing reduces breach risk and provides evidence of your security investment.
Penetration testing costs in London vary based on scope, complexity, and methodology. A focused web application test typically ranges from £3,000-£8,000, while comprehensive enterprise assessments including network, cloud, and application testing may range from £15,000-£50,000+. London-based testing with on-site components may have different pricing structures. We provide fixed-price quotes after scoping to ensure transparency. Contact our London team for a tailored proposal.
Yes, our UK-based team offers on-site penetration testing across all London locations, including Westminster, City of London, Canary Wharf, Shoreditch, and throughout Greater London. On-site testing is particularly valuable for internal network assessments, wireless security testing, physical security assessments, and when regulatory requirements mandate on-premises testing. We can schedule testing around your operational requirements and work outside business hours if needed.
Our reports include an executive summary for leadership, detailed technical findings with CVSS severity ratings, proof-of-concept evidence demonstrating exploitability, step-by-step remediation guidance, and risk-prioritised recommendations aligned with UK regulatory requirements. We also provide a walkthrough call with your London team to explain findings and answer questions from both technical and business stakeholders.
Yes, all our London penetration testing engagements include a retest of critical and high-severity findings at no additional cost within 30 days of your remediation. This verifies that fixes are effective and provides you with a clean report for compliance and stakeholder assurance purposes. For London businesses requiring ongoing assurance, we also offer retainer-based testing programs.
We serve businesses across all London areas including central London (Westminster, City of London, Camden), East London (Canary Wharf, Shoreditch, Stratford), West London, North London, South London, and all Greater London boroughs. Our UK-based team can provide both remote and on-site penetration testing services regardless of your London location, with flexible scheduling to accommodate your business needs.
Yes, our CREST-aligned penetration testing services help London financial services firms meet FCA requirements for cyber resilience. We understand the regulatory expectations for firms operating in the City of London and Canary Wharf, and our reports are structured to support compliance audits. We can also assist with PCI DSS, ISO 27001, and other regulatory frameworks commonly required in London's financial sector.
