Penetration Testing Services UK
Find your security holes before attackers do. Web application pen testing, API security assessments, and secure code review — delivered by engineers who build production systems for a living, with reports your team can actually act on.
Security Testing by People Who Build Software
Most penetration testing reports end the same way: a PDF full of findings lands in your inbox, the testers disappear, and your team is left to decode what any of it means and how to fix it. We work differently — because we're builders first. Every finding comes with concrete, implementable remediation steps, and if your team doesn't have the capacity to fix the issues, we can implement the fixes ourselves.
Our testing follows the OWASP methodology — the industry-standard framework covering injection attacks, broken authentication, cross-site scripting, security misconfiguration, vulnerable dependencies, and the rest of the attack surface a real adversary would probe. Automated scanning finds the obvious; manual testing finds the chains of small weaknesses that become real breaches.
Why UK SMEs Get Tested
The trigger is usually one of three things: an enterprise client's procurement team demanding evidence of security testing before signing, a compliance milestone like Cyber Essentials Plus or ISO 27001, or a near-miss that made security suddenly feel real. Whatever the trigger, the economics are stark — the average cost of a cyber breach for a UK small business runs into tens of thousands of pounds, while a scoped security assessment costs a fraction of that.
For SaaS businesses specifically, security testing is becoming table stakes: enterprise buyers now routinely ask for recent pen test reports during procurement. Having one ready shortens sales cycles; not having one loses deals.
Scoped, Authorised, and Safe
All testing is performed under a signed authorisation agreement with an explicitly defined scope — which systems, which techniques, which testing window. Destructive methods and denial-of-service are excluded. Sensitive systems are tested against staging environments where possible, and you have a direct line to the tester throughout the engagement. At the end, you get two documents: an executive summary in plain English, and a technical report with evidence and step-by-step remediation for every finding, ranked by real-world severity.
Security Built In, Not Bolted On
Because we also deliver digital product development and SaaS builds, security testing isn't an isolated service — it feeds back into how software gets built. Clients who combine development and security work with us get systems designed against the OWASP Top 10 from the first sprint, which is dramatically cheaper than remediating after launch.
Security Services We Deliver
Web Application Pen Testing
Manual and automated testing of your website or web app against the OWASP Top 10 — injection, XSS, broken authentication, access control flaws, and business logic abuse.
API Security Testing
REST and GraphQL APIs probed for broken authorisation, data exposure, rate-limit bypasses, and injection — the attack surface most scanners miss entirely.
Secure Code Review
Line-by-line review of security-critical code paths: authentication, payments, file handling, and user input. Finds the issues black-box testing can't reach.
Cloud Configuration Audit
AWS and Azure environment review — IAM policies, exposed storage, network security groups, secrets handling, and logging gaps, mapped to CIS benchmarks.
Vulnerability Assessment
Recurring automated scanning with human triage — dependency vulnerabilities, misconfigurations, and exposed services, without the false-positive noise.
Remediation & Retest
We don't just report problems — we can fix them. Remediation implemented by our engineers, followed by a retest and an updated report verifying every issue is closed.
Frequently Asked Questions
What UK businesses ask before commissioning security testing.
Find Out Where You're Exposed
Tell us what you need tested and we'll scope a fixed-price assessment — clear deliverables, a defined testing window, and a report you can hand to clients, auditors, or your board.
Book a Security Assessment