Simon Cowell is certainly not one to let the grass grow. Just over a week since crowning the winner of Celebrity X Factor, he returns with this second spin-off from the original singing contest, concentrating on groups. The music mogul is aware that so far, groups from The X Factor have sold more than 400 million records, so in this show, which continues on Wednesday, he is looking for undiscovered talent to form a pop group to sign to his record label and hopefully follow in the footsteps of One Direction, Fifth Harmony and Little Mix.