It is the last leg of this year's auditions, and we will see the final group of hopefuls from the record number who applied. Judges Simon Cowell, Dannii Minogue, Cheryl Cole and Louis Walsh are on a whistle stop tour of Britain to find any other potential winners out there. The wannabes must perform in front of the judges and a large studio audience, so they will need a strong constitution. But host Dermot O'Leary will be there to offer a shoulder to cry on if they need it. Who will make it through?