sentences:  After the War, in 1918, Gibson was admitted to the Faculty of Advocates, and between 1929 and 1931, was Senior Advocate Depute, one of the country's senior prosecutors.He was a member of the Labour Party and stood in a number of elections, serving as Member of Parliament for Greenock from 1936 to 1941.He stood down from his seat in 1941, when he was appointed as Chairman of the Scottish Land Court, succeeding another former pupil of Hamilton Academy, David King Murray (Lord Murray.)