Complex sentence: A promising high jumper, Simpson came 3rd in the all-England under 16 championships, only missing out on a Team Great Britain place because of his unruly hair and penchant for tight shorts.
Split into simpler sentences: A promising high jumper, Simpson came 3rd in the all-england under 16 championships. Only missing out on a Team Great Britain place because of his unruly hair and penchant for tight shorts.