The remaining acts jet off to the Judges' Houses, where they have a final chance to make a good impression. Louis hosts the groups in Ibiza, Sharon takes the overs to her LA home, Nicole is in Nice with the boys, and Simon brings the girls to Malibu. After nominating Wildcard acts to add to each others' categories, the judges face more tough decisions. Helping Louis with his choices are 2014 X Factor runner-up Fleur East and Britain's Got Talent judge Alesha Dixon. Sharon enlists the help of Robbie Williams, Nicole is joined by top DJ Calvin Harris, and Simon recruits Spice Girls Mel B and Emma Bunton