Ka cika wannan magana: Greig yana zama a Fife, Scotland, da matarsa da 'ya'yansu biyu. Greig ya kara fitowa a matsayin babban mai sharhi na siyasa a cikin Scotland na zamani, yana shiga tsakani sosai a cikin muhawara game da Scotland mai kirkira a cikin 2012 kuma yana tabbatar da mai ba da shawara ga 'yancin Scottish a cikin shirin zuwa ga Scotland.
Zaben raba gardama na Scottish Independence a cikin 2014.