Best CHECK-Approved Penetration Testing Companies
CHECK is a UK government scheme operated by the National Cyber Security Centre (NCSC) that approves companies to conduct penetration testing of government systems. CHECK-approved companies have undergone rigorous assessment of their testing capabilities, staff qualifications, and security handling procedures.
If you are a UK government department, public sector organisation, or critical national infrastructure operator, you may be required to use a CHECK-approved penetration testing provider. The providers below hold CHECK approval alongside other accreditations.
NCC Group
Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.
Nettitude
CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.
Bridewell
Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.
Pentest People
CREST and CHECK-accredited UK penetration testing firm with an innovative SecurePortal platform and transparent pricing for mid-market organizations.
Claranet
CREST and CHECK-accredited European managed services provider delivering penetration testing with deep infrastructure and cloud hosting expertise.
Best CHECK-Approved Penetration Testing Companies — FAQs
What is CHECK accreditation?+
CHECK is a UK government scheme run by the NCSC (National Cyber Security Centre) that approves companies to test government and public sector systems. CHECK-approved testers have demonstrated high levels of competence through rigorous NCSC assessment.
Do I need a CHECK-approved pen tester?+
CHECK approval is typically required for testing UK government systems, critical national infrastructure, and some public sector organisations. For commercial testing, CREST accreditation is the more common requirement.
How many CHECK-approved companies are there?+
There are approximately 30-40 CHECK-approved companies in the UK. The NCSC maintains the current list. All CHECK companies must also maintain CREST accreditation.