1974
Plaid Cymru wins three Parliamentary seats in the October election – Dafydd Wigley (Caernarfon), Gwynfor Evans (Carmarthen) and Dafydd Elis Thomas (Meirionnydd)
1976
Strong results in local government elections, Plaid Cymru control Merthyr
1979
Referendum on devolution – Wales votes No
1982
After a long campaign S4C starts transmitting Welsh language television programmes