Kammala jumla mai zuwa: An zabi Brown zuwa majalisar a matsayin dan majalisar Labour a kokari na biyu, don Dunfermline East a babban zaben 1983. Abokin aikinsa na farko a Westminster shi ne sabon dan majalisar da aka zaba daga mazabar Sedgefield, Tony Blair. Brown ya zama mai magana da yawun 'yan adawa a kan Ciniki da Masana'antu a shekarar 1985. A cikin 1986, ya wallafa tarihin rayuwar ɗan siyasar Jam'iyyar Labour mai zaman kanta James Maxton, batun karatun digiri na biyu. Brown shi ne Babban Sakataren Shadow na Baitulmalin daga 1987 zuwa 1989 sannan kuma Sakataren Harkokin Kasuwanci da Masana'antu, kafin ya zama Shadow Chancellor a 1992. Bayan da ya jagoranci yakin neman zabe na " Labour Movement Yes ", ya ki shiga cikin yakin neman zabe na " Yes for Scotland ", a lokacin yakin neman zabe na shekara ta
A cikin 1979 Scotland raba gardama, yayin da wasu manyan 'yan siyasa na Labour <unk> ciki har da Robin Cook, Tam Dalyell da Brian Wilson <unk> suka yi yakin neman zaben "A'a", Brown ya kasance babban mai shiga tsakani a cikin Yarjejeniyar Tsarin Mulki na Scotland, inda ya sanya hannu kan Da'awar Dama ga Scotland a 1989.