Complex sentence: Hickman was born in Greytown, Natal, South Africa, where he worked as a courthouse clerk after leaving high school and he moved to London in the 1950s where he was employed by a music publisher.
Split into simpler sentences: Hickman was born in Greytown, Natal, South Africa, where he worked as a courthouse clerk after leaving high school. He moved to London in the 1950s where he was employed by a music publisher.