As a scientific advisory group TAG’s role is not to decide policy but to summarise and distil available research to help guide Ministers in their decision making.
Fel grŵp cynghori gwyddonol, nid penderfynu ar bolisïau yw rôl TAG ond crynhoi a distyllu'r ymchwil sydd ar gael i helpu i arwain Gweinidogion wrth iddynt wneud penderfyniadau.