Penetration Testing Cost: Real 2026 UK Price Ranges (No 'Request a Quote')
Almost every penetration testing provider hides pricing behind a 'request a quote' form. We won't. This page publishes the real 2026 UK market ranges for each type of penetration test, explains exactly what drives the price up or down, and shows how Matproof Sentinel delivers an audit-ready report — proof-of-exploit per finding, mapped to ISO 27001, SOC 2, NIS2 and DORA — from €149 instead of £4,000+. Run a free 3-minute scan first to see your attack surface at no cost.
What a penetration test actually costs in the UK (2026)
Traditional consultancy penetration tests are priced by day rate and scope, so the headline number swings widely with how much there is to test and how senior the testers are. As a 2026 UK benchmark: a web application penetration test typically costs £4,000–£12,000; an external network penetration test £2,000–£6,000; a standalone API test sits in a similar band to web apps depending on endpoint count; an internal or assumed-breach engagement starts around £5,000 and rises quickly with estate size; and a full-scope engagement (external + internal + web + API) commonly runs £15,000–£50,000+. On top of the headline price, watch for three things that quietly inflate the real cost: re-tests after you fix findings are frequently billed separately; lead times of 2–4 weeks to even start mean the report is already weeks stale on delivery; and the output is a point-in-time PDF that says nothing about the code you ship next month. The day-rate model also means you pay the same premium whether the test finds ten critical issues or none. The value question is therefore not just 'what is the day rate' but 'what does an up-to-date, audit-ready answer cost per year' — which is where continuous, productized testing changes the maths.
- Scope is the biggest driver: number of applications, API endpoints, IP ranges and hosts in scope — a single web app is far cheaper than a full-estate engagement.
- Test depth: an unauthenticated black-box test is cheaper than authenticated/white-box testing with source-code review, which finds more but costs more.
- Tester seniority and certifications (CREST, OSCP) push day rates up — and most of the cost of a traditional pentest is human time, not tooling.
- Hidden costs to check for: re-tests after remediation billed separately, 2–4 week lead times, and 'out of scope' findings that require a new engagement.
- Frequency multiplies cost: if compliance or customers require current evidence, an annual £8,000 engagement becomes £8,000 every year — and is still out of date between tests.
- Continuous, productized testing (e.g. Matproof Sentinel from €149 per run or €299/month unlimited) changes the unit economics: always-current evidence for less than a single traditional engagement.
Penetration testing price by scope (2026 UK ranges vs Matproof Sentinel)
- Web application pentest — traditional £4,000–£12,000 · Matproof Sentinel from €149 (report) or €299/mo continuous
- External network pentest — traditional £2,000–£6,000 · Matproof Sentinel from €149 or €299/mo continuous
- API penetration test — traditional £4,000–£12,000 · included in Matproof Sentinel from €149
- Internal / assumed-breach — traditional £5,000–£20,000+ · Matproof Sentinel Growth €799/mo
- Full-scope (external + internal + web + API) — traditional £15,000–£50,000+ · Matproof Sentinel Growth €799/mo
- Re-test after remediation — traditional often £500–£2,000 extra · included free with Matproof Sentinel
- Continuous / per-deploy testing — traditional not offered (annual model) · Matproof Sentinel €299/mo unlimited (up to 3 domains)
- Audit-ready compliance mapping (ISO 27001 / SOC 2 / NIS2 / DORA) — traditional manual or add-on · included with every Matproof Sentinel report
Sample finding
The real cost question: per-engagement price vs cost-of-a-breach
A single critical web-application finding — for example a broken authorization flaw exposing customer data — left unfound until exploited carries a cost measured in regulatory fines, breach-notification, lost enterprise contracts and remediation, typically orders of magnitude above any pentest price. The point of publishing real pricing is to remove the friction that stops teams from testing at all: the most expensive penetration test is the one you didn't run because you couldn't get a price without a sales call. A £149 scan that catches one such issue has already paid for itself many times over — and continuous testing means the next one is caught on the deploy that introduces it, not a year later.
Fix: Match testing frequency to how often you ship. If you deploy weekly, an annual point-in-time test leaves 51 weeks untested — continuous testing closes that gap for less than one traditional engagement per year. Use a free scan to baseline your attack surface at zero cost, scope a single-run report (€149) for a specific application or compliance deadline, and move to continuous (€299/month) once testing is part of your release process.
Reference: UK market ranges compiled from published 2026 penetration testing provider pricing and industry day-rate benchmarks · Matproof Sentinel pricing: matproof.com/pricing
Penetration testing cost: free scan vs Matproof Sentinel vs traditional consultancy
| — | Free scan | Matproof Sentinel | Traditional consultancy |
|---|---|---|---|
| Automated scan engine | ✓ (3-min preview) | ✓ Full scan | ✗ Manual only |
| OWASP Top 10 coverage | Partial | ✓ Complete | ✓ Complete |
| Proof-of-exploit evidence | ✗ | ✓ Per finding | ✓ Per finding |
| Regulatory mapping (DORA/NIS2/ISO 27001) | ✗ | ✓ Automated | ✓ Manual |
| Audit-ready PDF report | ✗ | ✓ Instant | ✓ 2–4 weeks delivery |
| Continuous / recurring scans | ✗ | ✓ Per deploy | ✗ Annual engagement |
| Time to first result | ~3 min | ~30 min full scan | 2–4 weeks |
| Price | €0 | From €149 | €8,000–€25,000 |
| Source code review (SAST) | ✗ | ✓ On Growth plan | ✓ Scoped engagement |
| API testing (REST/GraphQL) | ✗ | ✓ Automated | ✓ Manual |
Matproof Sentinel penetration testing pricing (public, no quote required)
- 1 full pentest scan
- AI-prioritized findings with CVSS 3.1
- Proof-of-exploit per finding
- Audit-ready PDF report
- Regulatory mapping (DORA, NIS2, ISO 27001)
- Unlimited scans (up to 3 domains)
- Continuous monitoring
- CI/CD integration (GitHub, GitLab)
- All regulatory mappings
- Priority support
- Unlimited scans + domains
- Authenticated / White-Box testing
- API & cloud infrastructure tests
- Dedicated security account manager
- 24h SLA response time
Frequently asked questions about penetration testing cost
How much does a penetration test cost in the UK?
As a 2026 UK benchmark: a web application penetration test typically costs £4,000–£12,000; an external network test £2,000–£6,000; an API test a similar band to web apps; an internal/assumed-breach engagement from around £5,000; and a full-scope engagement £15,000–£50,000+. The price is driven mainly by scope (how much is tested) and depth (black-box vs authenticated/white-box). Matproof Sentinel delivers an audit-ready report from €149 (single run) or €299/month for continuous testing.
Why do most providers hide their penetration testing prices?
Because traditional pentests are priced per day against a custom scope, providers route everything through a sales call so they can scope and quote individually. The downside for buyers is friction and opacity — you cannot compare or budget without several calls. Matproof publishes pricing openly because the testing is productized: €149 per run, €299/month, €799/month, on matproof.com/pricing.
What makes a penetration test more expensive?
Five factors: (1) scope — more applications, endpoints, IPs and hosts cost more; (2) depth — authenticated/white-box testing with source review costs more than black-box; (3) tester seniority and certifications (CREST, OSCP); (4) frequency — current evidence means paying every year; and (5) hidden extras like re-tests billed separately and long lead times. Productized continuous testing reduces most of these because the marginal cost of another scan is near zero.
Is a cheaper automated test as good as a manual pentest?
It depends what you need. For most web applications and APIs, AI-driven testing that confirms findings with proof-of-exploit (not just scanner alerts) covers the OWASP Top 10 and API Top 10 to the standard auditors and enterprise buyers expect — at a fraction of the cost and with continuous coverage. For highly bespoke environments (complex internal networks, OT/SCADA, physical security in scope), a deeper human-led engagement is still warranted. Matproof Sentinel combines automated breadth with AI-driven exploitation and scopes complex internal work on the Growth plan.
How often do I need to pay for a penetration test?
Compliance frameworks generally expect at least annual testing, but applications change with every deploy, so annual testing leaves long windows untested. If you require current evidence (for ISO 27001 surveillance audits, SOC 2, or enterprise procurement), continuous testing usually costs less per year than repeated annual engagements and keeps your evidence always current. Matproof Sentinel's €299/month plan provides unlimited continuous scans across up to three domains.
Go deeper — related blog articles
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