In respect of principal councils, community and town councils, National Parks Authorities, Fire and Rescue Authorities and Port Health Authorities, it covers:
O ran prif gynghorau, cynghorau cymuned a thref, Awdurdodau Parciau Cenedlaethol, Awdurdodau Tân ac Achub ac Awdurdodau Iechyd Porthladdoedd, mae’n cynnwys: