SIOG2100 | Case identification: human intelligence sources (HumInts): contentsFrom HM Revenue & Customs · Specialist Investigations Operational GuidanceDetailsContents3 entriesSIOG2110Case identification: human intelligence sources (HumInts): backgroundSIOG2120Case identification: human intelligence sources (HumInts): record keepingSIOG2130Case identification: human intelligence sources (HumInts): detailed guidanceNext