VAPT (Vulnerability Assessment and Penetration Testing) combines automated vulnerability scanning with hands-on manual penetration testing — as NCSC describes it, "attempting to breach some or all of that system's security, using the same tools and techniques as an adversary might." For UK businesses, VAPT is directly tied to Cyber Essentials Plus, ISO 27001, and UK GDPR/ICO accountability obligations.
What VAPT Actually Involves
Vulnerability assessment uses automated and manual scanning to identify potential weaknesses across your network, applications, and infrastructure. Penetration testing goes further: our testers actively attempt to exploit identified weaknesses, chaining vulnerabilities together the way a real attacker would, within carefully agreed rules of engagement. NCSC's own framework for Cyber Essentials Plus mandates testing across three layers — network infrastructure, web applications, and wireless environments where applicable.
Testing scope documentation matters as much as the testing itself: in-scope assets, clearly evidenced out-of-scope exclusions with compensating controls, and documented rules of engagement — including testing windows that respect sector-specific reporting deadlines, such as FCA PS21/3 timing considerations for financial services.
Cyber Essentials Plus — The Direct Trigger for Most UK VAPT Engagements
Cyber Essentials is the UK government-backed scheme, administered by NCSC and delivered through IASME-accredited certification bodies. Basic Cyber Essentials is a self-assessment questionnaire. Cyber Essentials Plus adds mandatory, independent, hands-on technical testing — this is exactly where VAPT comes in. Holding a current Cyber Essentials certificate is mandatory for UK organisations bidding on central government contracts involving sensitive or personal data, and any UK organisation under £20m turnover achieving certification is entitled to free Cyber Liability Insurance via IASME.
The Cyber Security and Resilience Bill 2026
The Bill, the Government's direct response to NCSC's warning of a "widening gap between the increasingly complex cyber threats and the UK's defensive capabilities," significantly expands the scope of regulated sectors, introduces enhanced incident reporting requirements, and gives regulators materially greater enforcement powers.
CHECK is NCSC's specific accreditation for penetration testers working on UK government and critical national infrastructure systems — a distinct, narrower scheme from general commercial VAPT. If your engagement specifically requires a CHECK-approved tester, we'll tell you plainly rather than imply we hold that designation, and help you find an appropriately accredited provider.
Get VAPT for Your UK Business
Free consultation. Fixed-price quote in 24 hours. 2–3 weeks to your findings report.
Get Free Quote →Real value of VAPT for UK businesses
Based on outcomes reported by UK businesses we've tested.
Unlocks Cyber Essentials Plus
Mandatory independent technical testing is the core requirement separating Plus from basic self-assessed Cyber Essentials.
Wins Government Contracts
A current Cyber Essentials certificate is mandatory for central government contracts involving sensitive or personal data.
Evidences UK GDPR Accountability
Documented technical security testing supports your ICO accountability obligations.
Free Cyber Liability Insurance Eligibility
UK organisations under £20m turnover achieving Cyber Essentials certification are entitled to free cyber liability insurance via IASME.
Strengthens ISO 27001 Evidence
Concrete, real-world testing results give your ISMS Annex A controls tangible, technical evidence.
Ahead of the Cyber Security and Resilience Bill
As regulated sectors expand, demonstrated testing readiness is increasingly a governance expectation.
What UK businesses say about London Cert VAPT
Verified reviews from businesses we've tested.
“We needed Cyber Essentials Plus for a government tender. London Cert's testing was thorough and the findings report was clear enough that our internal team could act on it immediately.”
“They were upfront that our project needed a CHECK-approved tester given the CNI element, and helped us find the right provider rather than pretending they could cover it.”
“Our ISO 27001 auditor specifically asked for recent penetration testing evidence. London Cert's report gave us exactly the technical substance behind our documented controls.”
How VAPT fits into Cyber Essentials Plus
Cyber Essentials, administered by NCSC and delivered via IASME-accredited certification bodies, has two tiers.
Cyber Essentials (Basic)
Self-assessment questionnaire confirming five technical controls are in place: firewalls, secure configuration, user access control, malware protection, and 14-day patch management.
Cyber Essentials Plus
Builds on basic Cyber Essentials with mandatory independent technical verification — our VAPT engagement is exactly this component.
Three Testing Layers
NCSC's framework covers network infrastructure, web applications, and wireless environments where applicable.
Testing Cadence
Independent penetration testing is required annually, or following material infrastructure changes.
Cyber Essentials Requirements for IT Infrastructure v3.3 (April 2026) is the current version governing what's tested. London Cert's VAPT methodology is aligned to this current version.
What's changing for UK cyber security
Several developments are reshaping what UK businesses need to demonstrate.
Expands regulated sectors beyond the original NIS Regulations' six sectors, introduces enhanced incident reporting requirements, and gives regulators greater enforcement powers.
The current version of NCSC's technical requirements for IT infrastructure under Cyber Essentials.
Financial services firms need to schedule penetration testing windows carefully around FCA reporting deadlines.
UK GDPR's security-by-design and accountability principles make documented technical security testing increasingly relevant evidence.
If your organisation operates in or supports a sector newly brought into scope by the Cyber Security and Resilience Bill, London Cert can help you assess your current VAPT readiness against what's coming.
How a VAPT engagement works
A clear, methodology-led process from first call to your findings report.
Free Consultation & Scoping
We define in-scope assets, testing methodology, and rules of engagement, and provide a fixed quote within 24 hours.
Vulnerability Assessment
Automated and manual scanning identifies potential weaknesses across your network, web applications, and infrastructure.
Penetration Testing
Our testers actively attempt to exploit identified weaknesses, chaining vulnerabilities as a real adversary would, within agreed rules of engagement.
Report & Remediation Support
You receive a detailed findings report with risk ratings and remediation guidance.
VAPT Cost in the UK — Transparent Pricing
Fixed-price, all-inclusive packages. No hidden fees.
Cost depends on scope (network, web application, wireless), number of assets, and testing depth. Contact us for a personalised, binding quote within 24 hours.
Cyber Essentials Plus Component
- Network infrastructure testing
- Findings report
- Remediation guidance
Full VAPT — Network + Web + Wireless
Popular- All three testing layers
- OWASP/NIST/PTES-aligned methodology
- ISO 27001-ready evidence
Web Application Focus
- Authentication bypass testing
- Input validation checks
- Detailed findings report
Annual Retesting Programme
- Scheduled annual testing
- Post material-change retesting
- Cost efficiency vs one-off engagements
VAPT for UK Businesses — every question answered
The most-asked questions — straight, accurate answers.
No. VAPT is a technical security testing service — our specialists actively test your systems and deliver a detailed findings report. ISO 27001 is a management-system standard, independently audited and issued with IAF accreditation. VAPT is often a supporting control within an ISO 27001 ISMS.
Still have questions?
Our UK security testing team is available for a free consultation.
Talk to an Expert →Need ISO 27001 Too?
Explore our IAF-accredited ISO 27001 certification alongside your VAPT engagement.
Explore ISO 27001 →