How to Get a Penetration Testing Quote in the UK (And What to Expect)

How Much Does a Penetration Test Cost in the UK?

If you have searched "penetration testing quote UK" and found wildly different numbers, you are not alone. Pen test pricing ranges from a few hundred pounds for an automated scan to £20,000 or more for a full manual engagement by a certified security consultancy. Understanding what drives those differences will help you get an accurate quote and avoid paying for more than your business actually needs.

This guide explains what affects penetration test pricing in the UK, what to expect when you request a quote, and how tools like Yrzo AI fit into the picture as a cost-effective first step.

What Affects Penetration Test Pricing in the UK?

**Scope of testing** is the biggest factor. A test covering a single web application costs far less than one covering a web application, an API, a mobile app, an internal network, and cloud infrastructure simultaneously. Before requesting a quote, define exactly what you want tested.

**Type of test** also drives cost significantly:

- **Web application penetration test** — typically £1,500 to £8,000 for a manual engagement depending on complexity. Automated scanning starts at £99. - **Network penetration test (external)** — typically £2,000 to £6,000. - **Network penetration test (internal)** — typically £3,000 to £10,000, as it requires physical or VPN access. - **Mobile application penetration test** — typically £3,000 to £8,000 per platform. - **Social engineering / phishing simulation** — typically £1,500 to £5,000. - **Red team engagement** — typically £10,000 to £30,000 or more.

**Tester credentials** matter. A firm with CHECK Team Leader (CHECK TL) status or staff holding CREST CPIA, CPSA, or Offensive Security certifications (OSCP, OSCE) will charge more than a freelancer without recognised qualifications. For regulated industries — NHS suppliers, financial services, central government — CHECK or CREST certification is often a contractual requirement.

**Time and depth of testing** — a two-day test will find surface-level issues. A five-day test goes deeper into business logic, API security, and authentication flows. More days means higher cost but also better coverage.

**Report quality** — a proper penetration test report includes an executive summary, risk ratings, evidence (screenshots, request/response pairs), and a prioritised remediation roadmap. Cheap tests sometimes deliver thin reports that leave you guessing what to actually fix.

What You Get With a UK Penetration Test

A professional web application penetration test in the UK should include:

- **Reconnaissance** — mapping your attack surface, identifying technologies, discovering subdomains and endpoints - **Injection testing** — SQL injection, XSS, command injection, XXE, SSTI - **Authentication testing** — brute force protection, session management, JWT weaknesses, password reset flaws - **Access control testing** — IDOR, privilege escalation, insecure direct object references - **API security testing** — GraphQL introspection, REST endpoint analysis, OAuth misconfigurations - **Business logic testing** — price manipulation, workflow bypass, role escalation - **Reporting** — executive summary plus technical findings with severity ratings and remediation steps

If any of these are missing from a quote, ask why.

How to Request a Penetration Testing Quote in the UK

When approaching a UK penetration testing firm, be ready to answer:

1. **What is the URL or IP scope?** — List every domain, subdomain, and IP you want tested. 2. **Is it a web application, API, network, or mobile app?** — Be specific. 3. **How many user roles exist?** — Anonymous, authenticated, admin. More roles = more test time. 4. **Do you have a staging environment?** — Testing against live production introduces risk; most testers prefer a staging clone. 5. **What frameworks or platforms are in use?** — Knowing it is WordPress vs a custom Node.js app helps estimate complexity. 6. **Do you have a deadline?** — Report-by dates affect scheduling and sometimes pricing. 7. **Is there a compliance driver?** — GDPR, Cyber Essentials Plus, PCI DSS, ISO 27001, and NHS DSP Toolkit each have specific requirements that affect scope.

Most UK penetration testing firms will provide a quote within two to five working days of receiving this information.

What to Look for in a UK Pen Test Provider

**CREST or CHECK accreditation** — For regulated sectors, this is not optional. CREST is the primary industry body for penetration testing in the UK. CHECK is the UK government scheme managed by NCSC.

**A sample report** — Reputable firms will share a redacted sample report. If they refuse, that is a red flag.

**Clear methodology** — Ask whether they follow OWASP Testing Guide, PTES (Penetration Testing Execution Standard), or CHECK methodology. A vague answer suggests a vague test.

**Scoping accuracy** — A good firm will ask detailed questions before quoting. An instant quote with no scoping questions is usually a sign of a generic, shallow test.

**Remediation support** — Some firms include a free follow-up scan after you have fixed the findings. This is worth asking about.

Where Automated Scanning Fits

Manual penetration testing is the gold standard, but it is expensive and not always necessary as a first step.

Automated security scanning tools like Yrzo AI perform 44 security checks against your web application — covering injection flaws, authentication weaknesses, security headers, cookie security, SSL configuration, subdomain exposure, and more — and deliver a plain-English report in under 20 minutes.

This serves a different purpose to a manual pen test:

- **Before commissioning a manual test** — use automated scanning to fix the obvious issues first. You are paying day rates for a manual tester; spending that time on missing headers is expensive. - **After a manual test** — re-scan after remediation to confirm fixes are live before the tester returns for a verification check. - **For ongoing visibility** — many small businesses cannot afford an annual pen test. Monthly automated scanning provides continuous coverage at a fraction of the cost.

Yrzo AI scans start at £99. A manual web application penetration test starts at around £1,500. Both have their place.

Typical Penetration Testing Timelines in the UK

- **Automated scan** — results within 20 minutes - **Proposal and scoping** — two to five working days - **Scheduling** — most reputable UK firms have four to eight week lead times; demand spikes around financial year ends (March–April and September–October) - **Testing** — typically two to five days on-site or remote - **Report delivery** — typically five to ten working days after testing ends - **Retest** — scheduled separately after remediation, usually two to four weeks later

Does GDPR Require a Penetration Test?

The UK GDPR (retained from the EU version post-Brexit) requires organisations to implement "appropriate technical and organisational measures" to protect personal data. While it does not mandate penetration testing by name, the ICO's guidance and standard data processing agreements increasingly reference regular security testing as evidence of compliance.

For organisations processing sensitive personal data — health information, financial records, children's data — annual penetration testing is widely considered part of reasonable due diligence. ICO enforcement decisions have referenced the absence of security testing as an aggravating factor in breach investigations.

Getting a Quote From Yrzo AI

Yrzo AI is not a replacement for a manual penetration test, but it is the fastest way to understand your current security posture before commissioning one — or as a regular check between annual tests.

An Yrzo AI scan covers 44 automated checks across your web application and delivers a prioritised report identifying confirmed vulnerabilities, potential findings, and hardening observations. Reports are written in plain English for non-technical founders, with technical detail for developers.

Run a scan at yrzoai.dev. Results in under 20 minutes, starting at £99.