Olly Murs and Louisa Johnson, Imelda May, Blondie, The cast of Bat Out of Hell, Paul Zerdin, Adam Hess

In the series finale, tonight's bill features music from chart toppers Clean Bandit; jaw-dropping illusion from James More; comedy from James Acaster and The Noise Next Door; plus performances from West End smash hits School of Rock, and Les Misérables. The 2,200 strong audience inside the Palladium will also be featured and there will be huge surprises, special moments and prizes to be won.