How Much Does a Penetration Test Cost in the UK? (2026 Guide + Free Quote Tool)
If you’re evaluating a penetration test(opens in new tab) for your organisation, one of the first questions you’ll ask is: how much does penetration testing cost in the UK?
Penetration testing prices can vary significantly – from a few thousand pounds for a simple web application to tens of thousands for complex, multi-environment engagements. This guide explains everything you need to know, including:
- Typical penetration testing cost ranges in the UK
- What factors influence pen test pricing
- Common cost drivers and budget pitfalls
- How pricing works for different business types and test types
- What’s included in a quote (and what’s not)
- Cost-saving strategies without compromising quality
- A free penetration testing quote tool to get a tailored estimate
Try our free online penetration testing quote tool(opens in new tab)
Who Needs Penetration Testing in the UK?
Penetration testing is essential for any organisation that wants to reduce cyber risk, protect sensitive data, or meet compliance requirements. In the UK, penetration testing is commonly required by retailers, eCommerce businesses, SaaS platforms, financial services, healthcare providers, cloud-native businesses, and any organisation pursuing standards such as PCI DSS(opens in new tab), ISO 27001(opens in new tab), Cyber Essentials Plus(opens in new tab), or GDPR.
You may also need testing if it’s mandated by a customer contract, a supplier assurance process, or a procurement requirement. In some cases, penetration testing is part of an internal risk management strategy, especially for businesses undergoing digital transformation or cloud migration.
Even if your infrastructure is outsourced, you may still be responsible for testing the applications, configurations, or integrations you control.
Key Factors That Affect Penetration Testing Cost
The Type of Test Being Performed
The first cost factor is the type of test required. External infrastructure tests focus on internet-facing systems such as firewalls and public IPs. Internal infrastructure testing simulates an attacker inside your network. Web application tests assess user roles, business logic, and session handling. Mobile app testing focuses on API calls, permissions, and storage on Android and iOS platforms. Cloud penetration testing involves configuration reviews, IAM roles, and access paths in platforms like AWS or Azure.
Each of these involves different levels of effort and technical approach. If your organisation uses a combination of platforms, you may need more than one type of test. Bundling them together can be more efficient and cost-effective.
Volume and Complexity of Systems in Scope
The number of distinct systems or components significantly affects cost. For example, if you’re testing a single-page application with no login, the effort is minimal. But if that application includes a frontend, API, admin panel, and multiple user roles, the testing scope expands quickly.
Scope complexity also includes how those systems are hosted. If they’re spread across different IP addresses, domains, cloud accounts, or physical sites, each may require a different test setup, tooling, and reporting pathway.
Depth and Coverage of Testing
The cost of penetration testing also depends on how deeply systems need to be tested. Basic black-box testing, where no credentials are provided, is usually quicker and cheaper. Authenticated testing, where testers access different user roles, takes more time but delivers deeper insight.
Some tests include manual exploitation, business logic abuse, or privilege escalation attempts. These provide a higher level of assurance but increase effort. Compliance frameworks like PCI DSS or ISO 27001 often require more thorough, evidence-driven testing(opens in new tab).
Compliance and Reporting Requirements
If you’re testing to meet a standard or regulatory requirement, reporting needs are often more detailed. You may need multiple formats: a technical report for developers, an executive summary for stakeholders, and control-mapping for auditors. Screenshots, timelines, and walkthroughs add further reporting overhead.
Detailed reporting takes time to produce, especially when the findings require cross-referencing with frameworks or remediation planning.
Typical Penetration Testing Costs in the UK (2026)
Pricing varies based on the type of test, depth of analysis, and complexity of your systems. The following ranges reflect UK market benchmarks:
| Type of Pen Test | Typical Cost Range (GBP) |
| Small web application | £2,000 – £5,000 |
| Basic external infrastructure | £3,000 – £6,000 |
| Internal network (1 site) | £5,000 – £9,000 |
| Mid-sized environment (internal + external + web app) | £8,000 – £18,000 |
| Mobile app (iOS or Android) | £4,000 – £10,000 |
| Cloud environment (AWS/Azure) | £5,000 – £15,000 |
| Enterprise / multi-site | £25,000 – £70,000+ |
Actual costs will vary based on scope, methodology, reporting needs, and remediation support.
Example Penetration Testing Scenarios by Business Type
Small Business
A single web application with basic login functionality and a few external IPs. The environment is hosted on a managed cloud platform with minimal internal infrastructure.
Estimated cost: £2,500 – £6,000
Mid-Sized Business
An organisation with two production web apps, internal infrastructure for staff, and a separate staging environment in AWS. Testing includes multiple user roles, basic API interaction, and internal systems across one office.
Estimated cost: £8,000 – £18,000
Enterprise or Regulated Sector Organisation
A multi-site business with internal networks, cloud infrastructure across multiple regions, public APIs, mobile apps, and third-party integrations. Testing includes authenticated user flows, business logic testing, and formal reporting for compliance.
Estimated cost: £25,000 – £70,000+
What to Expect in a Penetration Testing Quote
A fully-scoped quote from Securious provides a clear breakdown of what’s included in the cost. This usually covers the test type(s), scope of systems involved, estimated testing effort, and the reporting format. It will also note whether remediation support or retesting is included.
You’ll see details on assumptions (for example, credential access), exclusions (such as denial-of-service testing), and logistical requirements (such as VPN access or scheduling constraints).
Our quotes are designed to reflect your environment as it is – not generic packages.
What May Not Be Included in Standard Quotes
Not all providers include retesting, post-remediation verification, or compliance mapping by default. Similarly, vulnerability scans, threat modelling, or secure code reviews may need to be scoped separately.
If you need penetration testing to support a certification or audit, clarify early whether additional deliverables are required.
Avoidable Mistakes That Drive Up Penetration Testing Costs
One of the biggest issues is under-scoping. When systems are missed during planning, they often need to be tested later – resulting in extra phases and cost. Similarly, trying to include every possible asset in one test can spread effort too thin and reduce quality.
Late engagement is another problem. Testing that happens right before a compliance deadline often involves higher consultancy costs and tighter remediation windows.
Treating penetration testing as a one-off exercise rather than a regular security control can lead to higher costs over time. A more strategic, ongoing testing approach usually provides better value.
Click here to learn more about how to scope a penetration test.(opens in new tab)
Strategies to Reduce Penetration Testing Costs
One of the best ways to reduce cost is to prioritise. Focus on high-risk systems – those that are public-facing, handle sensitive data, or are required for compliance. Avoid overloading scope with systems that are low-risk or not in use.
Defining scope clearly from the start helps avoid change requests. If you’re unsure what’s in scope, our consultants can help you map this out. Reusing compliance scope definitions (e.g. PCI DSS boundaries) also helps streamline planning.
Bundling tests together – such as internal and external testing in the same engagement – often results in better pricing than conducting them separately. If you’re planning to test quarterly or annually, you may benefit from scheduled pricing or service credits.
Try Our Free Penetration Testing Quote Tool
Use our free online quote generator to get a tailored estimate in minutes. Just answer a few quick questions about your environment, and we’ll provide a realistic price range.
Get My Free, Instant Pentest Quote(opens in new tab
Penetration Testing Cost FAQs
How much does a penetration test cost in the UK?
Anywhere from £2,000 to over £70,000 depending on size, complexity, and testing depth.
What affects the price of a penetration test?
Test type, number of systems in scope, system complexity, compliance needs, and reporting depth.
Can I get a free pentest quote?
Yes – use our quote generator(opens in new tab) or book a free scoping call.
What’s the cheapest way to get a pen test?
Minimise scope, focus on highest-risk assets, and use black-box testing if suitable.
Is penetration testing required for PCI DSS or ISO 27001?
Yes. Both require or recommend regular penetration testing.
Does the quote include retesting?
Some do, some don’t. We clearly specify if it’s included or optional.
Is this a one-off cost or ongoing?
Best practice is annual or quarterly testing, especially in regulated sectors or fast-changing environments.
How do I know if the price is fair?
Compare scope, methodology, and reporting quality – not just headline cost.
Ready to Get Started?
Use our free penetration test quote tool(opens in new tab), or book a scoping call with one of our experienced consultants(opens in new tab) to tailor your engagement to your budget and objectives.
Securious delivers high-quality, compliance-ready penetration testing to UK businesses of all sizes.