CREST Certified Penetration Testing Services.
CREST + IASME + ISO 27001 + ISO 9001. One independently-accredited UK provider for application, cloud, network, adversary simulation, audit, compliance, and emerging-discipline testing. Reports submitted directly to FCA, NCSC, NHS, ICO, and SOC 2 auditors, without translation work.
The three services UK businesses request most often.
Web Application Penetration Testing
Manual exploitation of OWASP Top 10, business-logic, IDOR, SSRF, and broken authentication. CREST-certified delivery, sector-aware methodology, free retests within 30 days.
OWASP TOP 10 · ASVSMobile App Penetration Testing
iOS + Android testing against OWASP MASVS. Frida runtime instrumentation, SSL pinning bypass, biometric bypass, backend API. Free retests, audit-grade reports.
OWASP MASVS · iOS · ANDROIDRed Teaming & Adversary Simulation
Threat-intelligence-led MITRE ATT&CK adversary simulation. STAR-aligned + TIBER-UK methodology. Goal-driven, full kill-chain coverage, detection-gap heatmap.
MITRE ATT&CK · STAR · TIBER-UKApplication Penetration Testing
OWASP-aligned manual testing across web, mobile, API, and desktop.
Web Application
OWASP Top 10 + ASVS, business-logic flaws, IDOR, SSRF.
Explore → MASVSMobile App
iOS + Android against OWASP MASVS. Frida runtime.
Explore → OWASP APIAPI
OWASP API Top 10. REST + GraphQL + gRPC. Schema-aware.
Explore → DESKTOPThick Client
.NET, Electron, Qt. Reverse engineering with IDA, Ghidra.
Explore →Cloud Security Reviews
CIS Benchmark + manual exploitation across the three majors. Running more than one cloud? See our cloud penetration testing hub.
Network & Infrastructure
External attack surface assessment + continuous monitoring.
External Infrastructure
PTES + NIST 800-115. OSINT-led recon, exposed services.
Explore → PTESInternal Network
Assumed-breach testing of Active Directory, lateral movement and internal services.
Explore → CONTINUOUSAttack Surface Monitoring
Continuous external asset discovery. 24/7 analyst-validated.
Explore →Adversary Simulation
Threat-intelligence-led testing of detection and response.
Red Teaming
MITRE ATT&CK adversary simulation. STAR + TIBER-UK methodology.
Explore → DETECTIONPurple Teaming
Collaborative red+blue. SIEM rule validation, MITRE heatmap.
Explore → CTIThreat Intelligence
Sector-specific actor profiling, dark web, breach corpus.
Explore → PHISHINGPhishing Assessment
Multi-channel: email, vishing, smishing, OAuth, MFA fatigue.
Explore →Audit, Compliance & Code
CREST-aligned testing for ISO 27001, SOC 2, PCI DSS, CE+.
VAPT
Combined automated + manual. Audit-grade compliance evidence.
Explore → CRESTCREST Pen Testing
CREST methodology across all service types. Verifiable membership.
Explore → IASMECyber Essentials & CE+
IASME-accredited Certifying Body. Pre-audit gap analysis.
Explore → ASVSSecure Code Review
11 languages, manual + SAST. OWASP ASVS L1/L2/L3.
Explore →Specialty & Emerging
Niche disciplines: AI, smart contracts, bug bounty, geo.
AI / LLM Pen Testing
OWASP LLM Top 10. Prompt injection, RAG poisoning, agent abuse.
Explore → WEB3Smart Contract Audit
Solidity, Vyper, Move. Reentrancy, oracle manipulation, MEV.
Explore → BUG BOUNTYBug Bounty Programme
Programme design, pre-bounty hardening, professional triage.
Explore → LONDONLondon Pen Testing
Canary Wharf-based. M25 same-day on-site. UK data residency.
Explore →Sector-tailored methodology and compliance evidence packs.
Frequently Asked
Eight questions our scoping calls answer first.
Which penetration testing service do I need?
Most engagements combine 2-4 service types. For compliance: VAPT + Cyber Essentials Plus. For SaaS launch: Web App + API + Cloud (AWS/Azure/GCP). For FCA-regulated: Red Team + Threat Intelligence. Our 30-minute scoping call identifies the optimal service mix.
How much do penetration testing services cost in the UK?
Day rate for CREST-certified testers: £1,000-£1,500. Typical engagement ranges: small (single web app / external) £4,000-£8,000; mid-market combined £8,000-£18,000; enterprise (full-stack + cloud + red team) £18,000-£75,000+. All quotes are fixed-price after scoping.
How long does a penetration test take?
Single-target engagements 3-5 working days. Mid-market combined 7-10 days. Enterprise 12-15+ days. Red team 2-6 weeks. Cloud security review 4-15 days. Test duration is determined during scoping based on scope complexity.
Are all 21 services CREST-accredited?
Yes. Our CREST membership covers all penetration testing services. We are also IASME-accredited for Cyber Essentials Plus certification. Some specialty services (smart contract audit, AI/LLM pen testing) draw on adjacent CREST CRT/CCT credentials of our team members.
Can you bundle multiple services into one engagement?
Yes; bundled engagements typically save 15-25% versus separate contracts. Common bundles: VAPT + Cyber Essentials Plus, Web + API + Cloud, Red Team + Threat Intelligence + Purple Team. We design the bundle during scoping to match your scope and budget.
Will reports satisfy our auditor?
Yes. Reports are pre-mapped to FCA, NCSC, PCI DSS, ISO 27001, SOC 2, NHS DSPT, Cyber Essentials Plus, and cyber-insurance underwriting requirements. Audit teams submit directly without translation work.
How quickly can you start?
When you are ready to proceed, testing can begin within 24 hours. Standard engagements start within 24-48 hours of contract signature. London on-site engagements within next business day. Emergency engagements (incident-driven, M&A urgency, regulator demand) within 4 hours via priority pipeline.
How do you deliver findings?
Findings appear live in a secure client portal as we test, so your team can start fixing straight away rather than wait weeks for a PDF. A CREST-certified assessor is assigned to your engagement and contacts you straight after you request a quote, with no sales pipeline to chase.
Do you sign NDAs?
Yes. Standard NDA before any technical detail is shared. We operate under a project-specific master agreement that includes data handling, deliverable IP, and breach notification clauses. Custom MSAs and AUP terms are accepted for enterprise and public-sector clients.
Get a fixed pen test quote in 24 hours
A CREST-certified pen tester will contact you within one business day with a fixed price, a realistic timeline, and the right service mix for your scope. No sales pipeline.
