Complex sentence: Leaving Acton Secondary Modern at the age of 15, Caulfield secured a position as a filing clerk at Crosse & Blackwell and later transferred to the design studio, working on food display and carrying out menial tasks.
Split into simpler sentences: Leaving Acton Secondary Modern at the age of 15, Caulfield secured a position. He was later transferred to the design studio, working on food display and carrying out menial tasks.