Complex sentence: After stepping down from "Dancing on Ice", Willoughby began presenting "The Voice UK" on BBC ONE which she hosted for two series with Reggie Yates, but, she was replaced by Emma Willis for the third series in 2014.
Split into simpler sentences: After stepping down from "Dancing on Ice", Willoughby began presenting the BBC One talent show "The Voice UK", which she hosted for two series with Reggie Yates. She was replaced by Emma Willis for the third series in 2014.