In the quarter-final, Platt was in the bottom two with Stereo Kicks but was sent through to the semi-final after the result went to deadlock with Louis Walsh and Mel B voting to send Stereo Kicks through to the semi-final while Fernandez-Versini and Simon Cowell voting to send Platt through to the semi-final.
Cowell chose: In 2005, she was on the second series of the show as a member of the girl group Addictiv Ladies.
The six candidates at judges' houses were: Kerrianne Covell, Chloe Jasmine, Emily Middlemas, Stephanie Nala, Lauren Platt, and Lola Saunders.
Fernandez-Versini chose: With the eliminations of Stephanie Nala and Chloe Jasmine in week two and Lola Saunders in week four, Platt was Fernandez-Versini's last remaining act in the competition.
He is recognisable for doing acoustic versions of famous ballads or pop songs.
Walton was not initially through to the live shows, but Cowell brought him back as the Boys' wildcard.
After the eliminations of Overload Generation in week 1 and Jack Walton and Lola Saunders in week 4, Ritchie was the last wildcard left in the competition.