Complex sentence: By this time, Gray's brother William nee Billy had become marketing director and the company, buoyed by the relatively new formats of VHS and CD started to aggresively expand out of the Anglia region.
Split into simpler sentences: By this time, Gray's brother William nee Billy had become marketing director. The company, buoyed by the relatively new formats of VHS and CD started to aggresively expand out of the Anglia region.