used our powers, including tax enquiries, to investigate potential cases; and worked with other law enforcement agencies to share intelligence on those cases
defnyddio ein pwerau, gan gynnwys ymholiadau treth, i ymchwilio i achosion posibl; ac wedi gweithio gydag asiantaethau gorfodi'r gyfraith eraill i rannu gwybodaeth am yr achosion hynny