Complex sentence: In June 2012 it was announced that Devey would be leaving "Dragons Den" after the Autumn 2012 and had signed an exclusive agreement with Channel 4 for two years, fronting a new series "The Intern" airing in late 2012.
Split into simpler sentences: In June 2012 it was announced that Devey would be leaving Dragons Den after the series to be aired in the Autumn of 2012 and had signed an exclusive agreement with Channel 4 for 2 years. She is to front a new series "The Intern" airing in late 2012.