How Much Does a Penetration Test Cost in the UK? It is one of the trickiest questions to answer cleanly, because you can ask three providers to test what looks like the same thing and receive quotes ranging from a few hundred pounds to well over ten thousand. That spread is not a mistake. It reflects genuinely different things being sold, from an automated scan with a tidy PDF at one end to rigorous, human-led testing at the other. So the honest answer to how much a penetration test costs in the UK is: it depends, but within ranges you can actually plan around.

This 2026 pricing guide gives you realistic UK figures by test type, explains what drives the number up or down, and shows you how to tell a fair quote from a false economy. By the end you should be able to budget with confidence and compare proposals on a like-for-like basis.

The short answer: UK penetration test costs in 2026

Penetration testing in the UK is priced on consultant day rates, and for thorough, manual testing by a qualified, accredited tester, the fair market rate in 2026 sits at roughly £1,000 to £1,500 per day, with around £1,200 a common midpoint. Because engagements run anywhere from a couple of days to a few weeks, total costs vary accordingly. As a rough planning guide:

• A small, tightly scoped test typically starts at around £2,500
• Most mid-market engagements land between £3,750 and £8,000
• Many commercial web, API, mobile or cloud assessments fall in the £6,000 to £18,000 range
• Large, complex or heavily regulated environments run from £15,000 to £50,000 or more
• Full red team exercises sit above all of this, from around £15,000 to £75,000 or beyond

These are benchmarks, not fixed prices. Your actual figure depends on scope, and a credible provider will only commit to a number after a proper scoping conversation.

How penetration testing is priced

Almost all UK providers derive their price from two things: a day rate and the number of days your test is estimated to take. Some quote that openly as a day rate, while others package it as a fixed price for a defined scope. Both are valid, and both ultimately come back to the same sum of effort times rate.

A fixed price agreed after scoping is often the more comfortable option for buyers, because you know the full cost before work begins and you are protected from scope creep.

What you should be wary of is a “fixed fee” offered with barely any questions asked, because a provider who has not understood your environment cannot have scoped it accurately. In practice, the day rate remains the most useful number for comparing quotes, because it strips away differences in how each provider has estimated the days.

What drives the cost up or down

Understanding the levers behind a quote helps you scope sensibly and avoid paying for effort you do not need.

Scope and the number of assets

This is the single biggest driver. The number of applications, IP addresses, API endpoints, cloud accounts and user roles all add testing time. Ten IP addresses cost far less to test than five hundred.

Complexity

Multiple user roles, single sign-on, multi-factor authentication, intricate business logic, payment flows and multi-tenant architecture all multiply the checks a tester must perform. A five-role platform takes far longer to test properly than a larger single-role application.

The testing approach

Grey box or white box testing, where you provide credentials and documentation, often finds more issues per day and can cost less than black box testing, because the tester spends less time on reconnaissance and more on finding real weaknesses.

Tester seniority and accreditation

Experienced, certified testers command higher day rates, and they earn them by chaining findings and spotting risks a junior on a checklist would miss. CREST-accredited engagements sometimes carry a modest premium over unaccredited work, because the methodology and reporting bar is higher. That premium is the assurance you are paying for.

Compliance requirements

If your test needs to satisfy PCI DSS, ISO 27001, Cyber Essentials Plus or SOC 2, expect some additional reporting effort so the deliverable meets the relevant standard. This tends to add reporting time rather than testing time, but it is a real cost.

Retesting, location and urgency

Whether a round of retesting is included, whether any work must be carried out on site rather than remotely, and whether you need the job done urgently or out of hours will all move the final figure.

Why the cheapest quote is often the most expensive

Here is the warning worth heeding above all others. If a UK provider quotes below roughly £500 per day, you are almost certainly being sold an automated vulnerability scan dressed up as a penetration test, not genuine adversarial testing.

The danger is not just wasted money, it is false confidence. A scan that returns few findings can convince you that you are secure when a skilled attacker would walk straight through a business logic flaw or a chained weakness that no tool was ever going to catch. The National Cyber Security Centre publishes guidance on commissioning testing precisely because buyers so often struggle to tell real testing from a polished invoice.

Equally, a very high day rate above £2,000 is not automatically better. Premium rates can reflect specialism, urgency or out-of-hours work rather than superior everyday testing. The sweet spot for thorough, accredited manual testing remains that £1,000 to £1,500 band.

What a good quote should include

Price is only meaningful once you know what you are getting for it. A strong proposal should cover:

• A proper scoping call before any number is committed
• The testing itself, plus reporting, quality review and project management within the rate
• A clear report with findings scored by severity, usually using CVSS
• An executive summary suitable for your board, auditors or customers
• Prioritised, practical remediation guidance
• At least one round of retesting to confirm your fixes actually worked

Pay particular attention to retesting. If it is a separate line item priced at a large fraction of the original engagement, your real cost is higher than the headline number suggests. It is also worth asking whether the work is carried out by the provider’s own UK-based testers or quietly outsourced, if that matters to you.

How to get an accurate quote and compare fairly

The best way to get a reliable price, and to compare proposals on a level footing, is to prepare your scope before you ask. Be ready to describe what you want tested, the size of each target, whether systems are internet-facing or internal, any unusual technology, and the reason for testing, such as a compliance deadline. Then gather two or three quotes and compare the day rate and estimated days rather than just the total.

If one provider scopes a job at three days and another at six, that difference tells you something about how thoroughly each intends to test. Be especially cautious of any quote that arrives without questions, because accurate scoping is impossible without them.

Getting a clear, fixed price

The cost of a penetration test in the UK comes down to scope, day rate and days, and once you understand those three numbers, the wide range of quotes on the market becomes far easier to make sense of. Aim for a provider who scopes carefully, quotes transparently, and delivers thorough manual testing rather than a scan with a smart cover page.

CodeShield is a CREST-accredited penetration testing provider offering fixed-price engagements agreed after a short scoping call, so you know your full cost upfront with no surprises. Every engagement includes clear, severity-rated reporting, practical remediation guidance and retesting to confirm your fixes hold. Get in touch to tell us your test type and rough scope, and we will provide a realistic, tailored quote for your organisation.