Cyngor Bwrdeistref Sirol Torfaen a Chyngor Bwrdeistref Sirol Blaenau Gwent;Cyngor Bwrdeistref Sirol Pen-y-bont ar Ogwr a Chyngor Bro Morgannwg; aChyngor Bwrdeistref Sirol Conwy a Chyngor Sir Ddinbych.
Torfaen County Borough Council & Blaenau Gwent County Borough Council;Bridgend County Borough Council & Vale of Glamorgan Council; andConwy County Borough Council & Denbighshire County Council.