He was the campaign manager for the succesful bid to have John MacCormick elected Rector of the university, and is perhaps most famous for leading the expedition of a number of student Scottish nationalists in taking the Stone of Destiny from Westminster Abbey on Christmas Eve, 1950 and bringing it to Scotland.
After graduating from university, Hamilton forged a highly succesful legal career, becoming one of Scotland's most prominent lawyers. He joined the Labour Party for a short while, but has spent most of his life in active politics as a member of the Scottish National Party (SNP).
He was SNP candidate for the Strathclyde East seat at the 1994 election to the European Parliament, as well as a candidate for them in the Greenock and Inverclyde seat at the 1999 election to the Scottish Parliament. He was also chosen by GUSNA as their candidate for the Glasgow University Rectorial election in 1999 in which he came second to the actor Ross Kemp.
Hamilton has since resigned form the SNP in protest at their position in relation to the monarchy. A committed republican he believes that they are too pro-monarchy for his taste.
Hamilton has written tow autobiographical works, that are in part polemical too, A Touch of Treason (1994) and A Touch More Treason (1990).