SECRET individuals were of unquestionable loyalty, excellent character, and of such habits and associates as to cast no doubt on their trustworthiness in the handling of classified matter." That sentence could be interpreted as committing the Security authorities to direct investigation in every case. The Security Service now handled 4,700 names a week for vetting for Government Departments and that number was increasing. A requirement on that scale quite precluded the Security Service from themselves making positive enquiries.