Kammala jumla mai zuwa: Bayan rashin nasarar Conservative a zaben Fabrairu 1974 ya zama Sakataren Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Har Lokacin da Margaret Thatcher ta gaje Heath a matsayin jagorar Conservative "The Glasgow Herald" ya ba da rahoton hasashe cewa Buchanan-Smith na ɗaya daga cikin rukunin "manyan Tories" waɗanda za su iya ƙi yin aiki a ƙarƙashin ta. A ƙarshe ya kasance a cikin mukamin a ƙarƙashin Thatcher, amma ya yi murabus a 1976, tare da ƙaramin ministan inuwarsa Malcolm Rifkind, lokacin da ta canza manufofin Jam'iyyar Conservative don adawa da rarraba Scottish. Daga bisani, ya jagoranci gudunmawar Conservative zuwa yakin neman zabe a cikin
Zaɓen raba gardama na Scotland a shekara ta 1979.