HM Revenue and Customs (HMRC) introduced a suite of measures as part of the Criminal Finances Act 2017 to combat financial crime.
Cyflwynodd Cyllid a Thollau ei Fawrhydi (CThEF) gyfres o fesurau fel rhan o Ddeddf Cyllid Troseddol 2017 i fynd i'r afael â throseddau ariannol.