Complex sentence: The son of Alexander Haden Guest, a physician and surgeon of Manchester who was an active worker for the left, he was educated first at William Hulme's Grammar School, then studying medicine at Owens College, Manchester and the then London Hospital.
Split into simpler sentences: The son of Alexander Haden Guest, a physician and surgeon of Manchester who was an active worker for the left. He was educated first at William Hulme's Grammar School, then studying medicine at Owens College, Manchester and the then London Hospital.