David Walliams will participate in a comedy sketch called Comedy Christmas Calendar featuring BGT finalists and winners Francine Lewis, Lost Voice Guy, Steve Royle and Robert White, Daliso Chaponda and Katherine and Joe.
The 2020 winner Jon Courtenay, fresh from his appearance on The Royal Variety Performance will be appearing as will, Attraction, Richard Jones, Ben Hart, Marc Spellman, Asanda Jezile, Souparnika Nair, Fayth Ifil, Sarah Ikumu and Beau Dermott.
Ashley Banjo performs a Christmas-themed number as part of Diversity, alongside DVJ and season two winner George Sampson, Alesha Dixon sings ‘Have Yourself a Merry Little Christmas’ with 2017 winner Tokio Myers on piano.
Amanda Holden, will be joined by 2014 winners Collabro in a performance of ‘Home for Christmas’.
Calum Scott will perform ‘You Are The Reason’, joined by dance troupe the MerseyGirls, while Ashleigh & Sully and Eliza will join Sign Along With Us in a performance of ‘All I Want for Christmas Is You’.