Penetration Testing as a Service (PTaaS) UK

Short answer: Penetration testing as a service (PTaaS) is expert-led penetration testing delivered on demand with a transparent, fast model rather than a slow one-off project. EJN Labs delivers PTaaS across application, infrastructure, cloud and offensive operations: CREST-certified testers, pricing published from £3k, live access to findings during the test, the report on the last day, unlimited free retests, and no cancellation or rescheduling fees. Continuous attack surface monitoring is available for ongoing assurance between tests.

Traditional penetration testing is opaque and slow: a quote only after a sales call, a report ten working days after the work ends, and a separate bill to re-check your fixes. Penetration testing as a service fixes that. This page explains the model and what EJN Labs includes.

What is penetration testing as a service?

Penetration testing as a service (PTaaS) keeps the depth of a manual, expert-led penetration test but changes the delivery model around it. Instead of a one-off engagement with a long wait at the end, you get:

• On-demand scheduling across your applications, infrastructure, cloud and people.
• Live findings shared during the test, not held back until a final report.
• Transparent, published pricing so you can budget before you talk to anyone.
• Fast remediation support, including unlimited free retests once you have fixed the issues.
• Continuous attack surface monitoring between tests, so new exposure is caught as it appears.

It is the difference between buying a report and buying an outcome.

EJN Labs penetration testing services

EJN Labs delivers CREST-certified testing across the full estate UK businesses run, each with published pricing and stated durations.

Application security

• Web application penetration testing
• Mobile application penetration testing
• API penetration testing
• Thick client penetration testing
• SaaS penetration testing
• AI and LLM penetration testing
• Secure code review

Infrastructure and cloud

• External infrastructure penetration testing
• Cloud penetration testing
• AWS cloud security review
• Azure cloud security review
• GCP cloud security review

Offensive operations

• Red teaming
• Purple teaming
• Phishing and social engineering assessments

Cyber Essentials, VAPT and monitoring

• Cyber Essentials and Cyber Essentials Plus
• Vulnerability assessment (VAPT)
• Attack surface monitoring

See the full catalogue on our services page.

How our service model works

Every engagement follows the same transparent path, and the commitments below are included as standard, not sold as extras.

• Scope and quote. Pricing is published from £3k with tiers for larger scopes, so you can budget before any call. Prices are refreshed annually.
• Test with live findings. CREST-certified testers share findings as they are confirmed, so your team can triage critical issues during the test.
• Report on the last day. You receive the formal report on the final day of the engagement, not ten working days later.
• Unlimited free retests. Once you have remediated, we re-verify the fixes at no extra charge, as many times as needed.
• No lock-in. No cancellation fees, even the day before, and no rescheduling fees if your timeline moves.
• Ongoing assurance. Add continuous attack surface monitoring to catch new exposure between scheduled tests.

Penetration testing pricing

EJN Labs publishes its pricing openly. Engagements start from £3k, with tiers for larger and more complex scopes, and the duration of each test type is stated up front. You can see the full pricing before you speak to anyone.

Why choose EJN Labs

Transparent pricing, unlimited free retests, no cancellation or rescheduling fees, same-day reports and live findings are standard with every engagement. Most UK providers offer none of these. Read the full comparison in why EJN Labs is the best UK penetration testing provider.

Frequently asked questions

What is penetration testing as a service (PTaaS)?

Penetration testing as a service is expert-led, manual penetration testing delivered on demand with a transparent model: published pricing, live findings during the test, the report on the last day, and unlimited free retests, with optional continuous attack surface monitoring between tests.

How is PTaaS different from a traditional penetration test?

A traditional test is a one-off project with a quote only after a call, a report around ten working days later, and a separate charge to re-check fixes. PTaaS keeps the same testing depth but adds transparent pricing, live findings, same-day reports, free retests and ongoing monitoring.

How much do penetration testing services cost?

EJN Labs publishes pricing openly, starting from £3k with tiers for larger scopes. See the pricing page for the full breakdown.

Which assets can EJN Labs test?

Web, mobile, API, thick client, SaaS and AI applications; external infrastructure and AWS, Azure and GCP cloud; plus red teaming, purple teaming and social engineering, Cyber Essentials, VAPT and attack surface monitoring.

Are your testers accredited?

Yes. EJN Labs is CREST-certified, and the business holds ISO 27001, ISO 9001 and Cyber Essentials Plus, so reports are accepted by auditors, regulators and insurers.

Get a quote

See the published pricing, then request a fixed quote with no obligation. Get a penetration testing quote.