Vulnerable Group Access (including children), as operated by the Disclosure and Barring Service (DBS), replacing former Criminal Records Bureau (CRB) and Independent Safeguarding Authority (ISA) checks Law Enforcement, with a hierarchy of Police Personnel Vetting (PPV) and Non-Police Personnel Vetting (NPPV) levels, which are broadly aligned with National Security Clearance levels, but differ in focusing predominantly on susceptibility to criminality