After the rigours of boot camp, where contestants faced a dance challenge and the new Wall of Songs test, the lucky few who made it through now face the dreaded Six-Chair Challenge – possibly the cruellest piece of reality TV ever devised.

The evil mastermind behind it, Simon Cowell, holds court as the judges pick their final six, who will perform in front of a live audience for the first time before they get the chance to progress to the Judges’ Houses stage.