Joel Dommett hosts as the three remaining incognito celebrities compete to be crowned the ultimate champion, with comedian Lee Mack joining panellists Rita Ora, Jonathan Ross, Davina McCall and Mo Gilligan. The identities of all three finalists will be revealed, while all 12 singers reunite for a special group performance and three previous competitors return for a trio of one-of-a-kind duets.

Joel Dommett hosts and is joined by panellists Jonathan Ross, Rita Ora, Davina McCall, Mo Gilligan and special guest panellist Leona Lewis as four huge celebrities compete undercover in elaborate costumes and keep their true identities hidden - as each celebrity performs, our superstar panel of detectives try to unwrap their festive faces and unlock TV's best kept secret. 

This time sees four festive stars battle it out with the identities of Partridge (In a Pear Tree), Decorations, Reindeer and Sprout set to be revealed, but only one of them will be crowned as Christmas number one.