TL;DR

• Day rate: around £1,000, or £1,000–£1,500 for CREST-accredited testers.
• Typical SME cost: £3,000–£12,000. Complex environments can reach £15,000–£30,000+.
• Pricing formula: testing days × day rate, plus reporting and a retest.
• Beware of cheap quotes: they often mean scanner-only work or a narrow scope.
• Always check: a qualified tester, manual testing, a clear report and a retest are included.
• Test at least once a year, and after any major system change.

If you have ever asked three providers for a quote for penetration testing, you will know the frustration. One says £2,000. Another says £9,000. A third wants a scoping call before they will mention a number.

The gap is not random. A penetration test is sold as skilled human time, and the price follows how much time your systems need. This guide explains where the money goes, what UK businesses typically pay, and how to compare quotes properly.

UK Pen Testing Pricing at a Glance

• Typical day rate: A median published day rate of £1,000 across 30 UK public-sector rate cards, with most falling between £800 and £1,200.

• CREST-accredited testers: Private-sector rates for CREST-registered testers typically sit between £1,000 and £1,500 per day.

• How quotes are built: Estimated testing days × day rate, plus reporting and a retest.

• Typical SME spend: Roughly £3,000–£12,000 for a single scoped engagement.

• Large or complex estates: £15,000–£30,000+, and more for red teaming.

How Pen Test Pricing Really Works

Penetration testing is priced by the day, not the hour. Most reputable UK consultancies price on a day-rate basis, so a quote is the estimated number of testing days multiplied by the consultant’s rate, plus reporting and a retest. Many providers then convert that into a single fixed-price quote. 

So every pricing factor ultimately changes one number: how many days your test needs. A simple web application might need three days. A sprawling hybrid network might need fifteen.

Part of each engagement also goes on reporting. In one worked example, a four-day web app test at £1,050 a day comes to £4,200 before VAT, with roughly one day spent writing up, quality-assuring and presenting findings. That time is part of what makes the report useful, so it shouldn’t be treated as padding. 

Penetration Testing Cost by Type: UK Estimates

These ranges are indicative. They combine typical effort in days with typical UK day rates, and your final quote will depend on scope.

At the top end, network and cloud testing can run to around £30,000 per project, and enterprise-grade web application testing can exceed £50,000.

If your business runs an iOS or Android app, mobile app penetration testing is usually priced separately from web testing. It covers the app itself, its local data storage and the back-end APIs it talks to, which is why it typically takes 5–10 days and often costs more than a standard web application test. 

Typical Budgets by Business Size

7 Factors That Push Your Quote Up or Down

1. Scope size. More IP addresses, applications, user roles and APIs mean more testing days.
2. Internal vs external. Internal testing is usually deeper and costs more.
3. Application complexity. An app with several user roles, payment flows and third-party integrations takes longer than a brochure site.
4. Authenticated vs unauthenticated testing. Testing behind a login finds more, and takes longer.
5. Accreditation. CREST or CHECK-approved providers usually charge more, but they work to a higher technical standard. 
6. Timing. Out-of-hours testing is often priced above the standard day rate because evening and weekend work is harder to staff. 
7. Compliance requirements. PCI DSS, ISO 27001 or customer-mandated reports need more formal documentation.

Fixed Price or Day Rate?

Fixed pricing suits most SMEs, provided the scope document states exactly what is included. Day rates suit complex or changing environments, as long as you agree to a cap.

Is a Cheap Penetration Test Worth It?

Not usually. A low price often signals one of three things: a scanner-driven test dressed up as a pen test, junior staff, or a scope so narrow it misses your real risks. A good test should also sit within your wider cybersecurity services, rather than being a one-off tick-box exercise.

The market gives clear warning signs. A quality manual pen test cannot cost £300, and effective day rates under £600 often point to narrow scope, junior resource, automation-heavy work, or offshore delivery.

Hidden Costs Worth Budgeting For

• Retesting. Some providers include it, others charge for it.
• Remediation time. Your developers or IT team still need hours to fix issues.
• Environment setup. A staging site or test accounts may need preparing.
• Annual repeats. One test is a snapshot, so plan for yearly testing and retesting after major changes. Many organisations also run authenticated vulnerability scanning between annual tests, which carries its own licence cost. If you’d rather not run this in-house, managed security services can cover continuous monitoring and scanning between tests. 
• VAT. Most quotes exclude it.

Why the Spend Is Easy to Justify

The 2025 government survey found that approximately 612,000 UK businesses identified a cyber breach or attack in the past year. On cost, the average cost of the most disruptive breach was £1,600 across all businesses, or £3,550 once zero-cost cases were excluded. 

Averages hide the tail. A serious incident brings downtime, lost customers, regulatory attention and contract risk that rarely appear in the headline figure. A £5,000 test that closes one exploitable flaw is cheap by comparison.

Final Thoughts

The right question isn’t “what is the cheapest pen test?” but “what is the clearest picture of my risk I can get for my budget?” Good scoping, qualified testers and a report your team can act on matter far more than a headline rate.

At Elite IT Team, we believe pricing should be transparent and scoping honest. We work with you to define exactly what needs testing, explain what each day of effort buys, and deliver findings in plain language with practical fixes, so a pen test leaves you more secure rather than just more informed.

Ready to budget with confidence? Contact us today for a clear, no-nonsense penetration testing quote tailored to your business.