The final judge on The Voice UK - at least in the order I've chosen to feature them - is Jessie J. Although still in the infancy of her recording career, not many artists can say that a song they've written has been Number 2 in the US Billboard Hot 100 (Miley Cyrus' Party in the U.S.A.).
Jessie J went to the BRIT School, which also produced (or rather honed) other talents such as Adele, Katie Melua, and (in part) The Feeling. An early recording contract fell through when the label went under and her subsequent songwriting contract came before a new attempt at recording led to Do It Like a Dude... The rest, as they say, is history...
The song I've chosen is Who You Are which is quite often played in the gym I attend - but not this acoustic version, though! Enjoy a pared back, raw performance: