He was Lord President of the Court of Session from 1935 until he became a Law Lord 1947 .
He was a Scottish law officer at various stages between 1929 and 1935 , and a Member of Parliament ( MP ) from 1931 to 1935 .
law officer was law officer   of the Court of Session from 1935 until law officer became a Law Lord 1947 .
He was a Scottish law officer at various stages between 1929 and 1935 , and a Member of Parliament ( MP ) from 1931 to 1935 .