Serch hynny, ac er bod gwybodaeth helaeth eisoes wedi'i darparu, mae Llywodraeth y DU'n dal i ofyn am ragor o wybodaeth am sut y mae'r dreth yn gweithredu. Buom yn gweithio'n ddidwyll gyda Llywodraeth y DU ond nid yw'n briodol iddi geisio penderfynu ar bolisi datganoledig nac ymwneud â materion sy'n fater i Lywodraeth Cymru a'r Senedd.
Despite this, and despite extensive information already being provided, the UK Government continues to ask for yet more information on the operation of the tax. We worked with the UK Government in good faith but it is not appropriate for it to attempt to determine devolved policy or get involved in matters which are rightly for the Welsh Government and the Senedd.