Penetration Testing in London
CREST and Cyber Scheme certified penetration testing with a London base in Covent Garden. Fixed-price proposals within 24 hours and a free retest on every engagement.
Overview
JAG Secure delivers penetration testing for London organisations from our base at 71-75 Shelton Street in Covent Garden, working alongside our Edinburgh headquarters. We provide web application, API, infrastructure, cloud, mobile and wireless security testing, delivered remotely or on-site across London and the South East. Recent engagements include work for law firms, retailers, healthcare technology providers, universities and SaaS businesses.
Senior-Led Testing, Not a Junior Handoff
Every engagement is scoped and delivered by a senior CREST certified consultant. The person you speak to during scoping is the person doing the testing, and we meet clients in person across London by appointment for scoping sessions and report debriefs. One client’s 5-star Google review describes their internal infrastructure engagement with us as “seamless from start to finish”, with outcomes that genuinely strengthened their security posture.
In Summary
Certified, senior-led penetration testing with a London base. You get a fixed-price proposal within 24 hours, testing delivered by the consultant you actually speak to, a clear report written for both boards and engineers and a free retest to confirm your fixes.
Why Organisations Choose JAG Secure
Reduced Risk of Breach
Identifying and resolving vulnerabilities helps protect sensitive data such as customer information, financial records and internal business logic
Regulatory Compliance
Penetration testing supports compliance with standards such as ISO 27001, PCI DSS and GDPR which often require regular security assessments
Enhanced Customer Trust
Demonstrating that your systems have been independently tested by a CREST certified firm builds trust with customers, partners and enterprise procurement teams
How an Engagement Works
Every engagement is scoped and delivered by a senior CREST certified consultant, not handed to a junior after the contract is signed. We test web applications, APIs, external and internal infrastructure, cloud environments, mobile applications and wireless networks, mapped to standards such as ISO 27001, Cyber Essentials Plus and PCI DSS.
At a Glance
Scoping & Quote
Tell us what needs testing. You receive a fixed-price proposal within 24 hours, with no hidden extras.
Scheduling
Remote or on-site across London and the South East, arranged around your change windows.
Testing
Hands-on testing by certified consultants, with any critical findings flagged to you immediately.
Reporting & Debrief
A clear report written for technical teams and leadership alike, with an in-person debrief available.
Free Retest
Once you have remediated, we verify your fixes at no extra cost.
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Frequently Asked Questions
Do you have a London office?
Yes. Our London base is at 71-75 Shelton Street in Covent Garden and we meet clients in person across London by appointment. Testing is delivered remotely or on-site depending on what the engagement needs.
How much does a penetration test cost in London?
Most engagements range from a few days to a few weeks of testing depending on scope. We provide a fixed-price proposal within 24 hours of scoping, with no hidden extras and a free retest included.
Can you test on-site in London?
Yes. Internal infrastructure, wireless and build review work is regularly delivered on-site across London and the South East. Web application, API and external infrastructure testing is typically delivered remotely.
Are you CREST certified?
Yes. JAG Secure is a CREST certified penetration testing consultancy and our consultants hold CREST and Cyber Scheme qualifications alongside certifications such as OSCP. The business is also Cyber Essentials Plus certified.