Complex sentence: She was a member of London County Council from 1925 to 1934, of West Sussex County Council from 1946 to 1967, and of the Conservative Women's National Advisory Committee 1951 to 1954.
Split into simpler sentences: She was a member of London County Council from 1925 to 1934, of West Sussex County Council from 1946 to 1967. Emmet was a member of the Conservative Women's National Advisory Committee 1951 to 1954.