University of Edinburgh.
He went to Edinburgh University where he obtained Master of Arts and LL.D degrees. He was called to the bar in Scotland in 1891 and then in England in 1899. He took silk in October 1906.
He was knighted in 1906.
He was senior Advocate-Depute, 1908–1910 and Deputy Chairman of the Fishery Board for Scotland, 1910–1913. During the same period he also held the post of Sheriff of Fife and Kinross.
He was made a Bencher of Gray"s Inn in 1920. In 1920 he was appointed Privy Counsellor and promoted to Lord Advocate, a post he held until 1922.
He resigned from the House of Commons on 27 February 1922 by accepting the office of Steward of the Chiltern Hundreds.
30th United Kingdom Parliament. 31st United Kingdom Parliament]
Liberal Member of Parliament for Inverness-shire from 1917 to 1918 and for Inverness from 1918 to 1922, Morison was Solicitor General for Scotland in the Liberal and Coalition Governments from October 1913 to 1920.