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?

The successful auditionees head to London's Hammersmith Apollo for the biggest bootcamp ever. Judges Simon Cowell, Dannii Minogue, Louis Walsh and Cheryl Cole will be putting 200 acts through their paces. Who will be able to handle the pressure and stand out from the crowd, and who will be heading home? After this first challenge, only 50 acts can go through to the next bootcamp stage. Host Dermot O'Leary is on hand to offer condolences to the unlucky and celebrate with the chosen few.

Join host Dermot O'Leary for the second in our bootcamp weekend double bill. The 50 remaining acts must perform again in front of an audience of thousands. Each singer has been able to practise overnight, and today is their last chance to impress judges Simon Cowell, Dannii Minogue, Cheryl Cole and Louis Walsh. The panel must now start choosing the performers they believe can go all the way. Who will make it into the final 24?

The X Factor goes global, as the 24 remaining acts jet off around the world to the judges' houses. Simon is at his home in Los Angeles, while Cheryl is in Marrakech, Louis is in Italy and Dannii is in Dubai. The judges are joined by Kylie Minogue, Will Young, Ronan Keating and Sinitta, who will be helping them make the tough decisions needed to whittle down the contestants to the final 12. Host Dermot O'Leary is on hand to support the singers as they face their biggest performance so far.

It is make or break time for the 24 remaining hopefuls - at the end of today's show they will find out whether they have been chosen for the live stages. There are only three places in each category, so judges Simon Cowell, Dannii Minogue, Cheryl Cole and Louis Walsh have some big decisions to make. Host Dermot O'Leary is on hand to support the contestants.