Kammala wannan jumla: Hannan, mai goyon bayan Turai, ya kasance daya daga cikin 'yan majalisa 69 na Labour don karya whip na uku da kuma jefa kuri'a don shiga Birtaniya a cikin Ƙungiyar Tattalin Arzikin Turai a watan Oktoba 1971. Ya kasance, duk da haka, ya yi tsayayya da rabuwa da Scotland, kuma ya shiga cikin yakin 'Scotland na Birtaniya' kafin mulkin mallaka.
1979 kuri'ar raba gardama kan mulkin gida. Koyaushe a gefen dama na Jam'iyyar Labour, a 1981 ya zama memba mai kafa jam'iyyar Social Democratic Party (SDP), kuma a watan Fabrairun wannan shekarar ya kasance ɗaya daga cikin 100 masu sa hannu a wani talla a cikin "The Guardian" da ke tallafawa Yarjejeniyar Limehouse.