External Government Agencies including but not limited, to her Majesty's Revenues and Customs (HMRC) and Department of Work and Pensions (DWP).
Asiantaethau Allanol y Llywodraeth gan gynnwys ond nid yn gyfyngedig i Cyllid a Thollau Ei Mawrhydi (CThEM) a’r Adran Gwaith a Phensiynau (DWP).