Whakakiia te rerenga e whai ake nei: Hei whakautu ki te putanga mai o Plaid Cymru me te Scottish National Party (SNP) I whakatuhia e te Kawanatanga Mahi a Harold Wilson te Royal Commission on the Constitution (te Komihana Kilbrandon) ki te tirotiro i nga whakaritenga ture o te UK i te 1969. Ko ōna tūtohu whakamutunga i hanga te pūtake o te Pukapuka Pōtae 1974 "Democracy and Devolution: proposals for Scotland and Wales"., i tono ai te hanganga o tētahi Huihuinga Welsh. Heoi anō, i whakakahoretia e ngā kaipōti ngā tono e te nuinga o te whā ki te kotahi i roto i tētahi pōti.
pōti i tū i te tau 1979.