Rubuta ci gaba don wannan sakin layi - A 1971, da tabbaci a hannun dama na Jam'iyyar Labour, Davies na ɗaya daga cikin 'yan majalisa 69 na Labour waɗanda suka ƙalubalanci Whip na Labour don yin zaɓe don shiga cikin EEC. Ya yi yakin neman zaben 'A'a' a zaben raba gardama na shekarar 1979 a Wales
game da kafa Majalisar Welsh, tare da sauran mambobin 'Gang of Six', Neil Kinnock, Leo Abse, Donald Anderson, Alfred Evans da Ioan Evans. Duk lokacin da yake zama dan majalisa, kungiyar APEX ta tallafa masa.