- Cynulliad Cenedlaethol Cymru
- Llywodraeth Cymru
- Uned Ddata Llywodraeth Leol - Cymru
- UK Parliament
- LGA - Local Government Association
- Scottish Government
- COSLA - Convention of Scottish Local Authorities
- Northern Ireland Executive
- NILGA - Northern Ireland Local Government Association
Mae rhagor o wybodaeth gan: Barry Williams