Complex sentence: Scott-Giles was educated at Emanuel School, and the University of Cambridge where he read history between 1919 and 1922, became a leading authority on heraldry before being appointed Fitzalan Pursuivant of Arms Extraordinary.
Split into simpler sentences: Scott-Giles was educated at Emanuel School, and the University of Cambridge where he read history between 1919 and 1922. He became a leading authority on heraldry before being appointed Fitzalan Pursuivant of Arms Extraordinary.