If, immediately before 1 April 2018, you were registered under section 47 of the Finance Act 1996 for the purposes of UK landfill tax and:
Os oeddech, yn union cyn 1 Ebrill 2018, wedi eich cofrestru o dan adran 47 o Ddeddf Cyllid 1996 at ddibenion treth dirlenwi’r DU ac: