SIOG6000 | Investigation work: contentsFrom HM Revenue & Customs · Specialist Investigations Operational GuidanceDetailsContents5 entriesSIOG6100Investigation work: general: contentsSIOG6200Investigation work: third party investigation work: contentsSIOG6300Investigation work: confidentiality: contentsSIOG6400Investigation work: mandates: contentsSIOG6500Investigation work: interviews with third parties: contentsPreviousNext