Complex sentence: In August 2008, she bought Charlie a house on the allotments however when it arrived the concrete flooring was smashed by Suzy Branning which looked like it would ruin Charlie's gift from Brenda.
Split into simpler sentences: In August 2008, she bought Charlie a house on the allotments. However, when it arrived, the concrete flooring was smashed by Suzy Branning which looked like it would ruin Charlie's gift from Brenda.