Complex sentence: Woolfe took up the role of Head of Sky1, Sky2 and Sky3 at BSkyB in January 2006, before moving to Channel 5 to become Channel Controller in April 2009.
Split into simpler sentences: Woolfe took up the role of Head of Sky1, Sky2 and Sky3 at BSkyB in January 2006. He moved to Channel 5 to become Channel Controller in April 2009.