Complex sentence: The son of a glass-worker, Walden attended West Bromwich Grammar School, he then won a major open scholarship to study at Queen's College, Oxford and in 1957 was elected President of the Oxford Union.
Split into simpler sentences: The son of a glass-worker, Walden attended West Bromwich Grammar School. He then won a major open scholarship to study at Queen's College, Oxford and in 1957 was elected President of the Oxford Union.