Cafodd Adolygiad o'r Sector Cynghorau Cymuned a Thref ei sefydlu gan Lywodraeth Cymru ym mis Gorffennaf 2017, i ystyried sut y gellir cryfhau cynghorau cymuned a thref gan sicrhau eu bod yn y sefyllfa orau i gefnogi eu cymunedau. Panel Adolygu trawsbleidiol ac annibynnol oedd hwn a oedd yn cynnwys cynrychiolwyr o'r Blaid Lafur, Plaid Cymru, y Ceidwadwyr Cymreig, a Democratiaid Rhyddfrydol Cymru, ac a oedd yn cael ei gadeirio ar y cyd gan Gwenda Thomas a Rhodri Glyn Thomas.
A Review of the Community and Town Council Sector was established in July 2017 by the Welsh Government to consider how community and town councils can be strengthened so they are best able to support their communities.  The independent cross-party Review Panel included representation from Labour, Plaid Cymru, the Welsh Conservative and Welsh Liberal Democrats and was jointly chaired by Gwenda Thomas and Rhodri Glyn Thomas.