Complex sentence: She excelled in kick-boxing and concentrated on her acting career, and in April 2005 performed as a guest in a school charity concert, organised by students, in aid of St. Thomas' Lupus Trust.
Split into simpler sentences: She excelled in kick-boxing and concentrated on her acting career. In April 2005, Bryan performed as a guest in a school charity concert, organised by students, in aid of St. Thomas' Lupus Trust.