Complex sentence: In June 2009, Mountford announced she was leaving the show at the end of Series 5 in order to concentrate on her PhD and was replaced for Series 6 by businesswoman Karren Brady.
Split into simpler sentences: In June 2009, Mountford announced she was leaving the show at the end of Series 5 in order to concentrate on her PhD. She was replaced for Series 6 by businesswoman Karren Brady.