Complex sentence: He attended Latymer Upper School in Hammersmith, St Johns Church of England school in Lacey Green, Buckinghamshire, and John Hampden Grammar School, High Wycombe.
Split into simpler sentences: He attended Latymer Upper School in Hammersmith, and St Johns Church of England school in Lacey Green, Buckinghamshire. Blumenthal completed his studies at John Hampden Grammar School, High Wycombe.