The top three positions in the UK Christmas charts were filled by songs from acts from the series.
Neil Fox announced live the Christmas top ten from the Capital Radio studios in London.
This episode was on a Sunday so that the Christmas record charts could be broadcast live on the show.
The girls sold over twice as many copies of their record than the boys did.
One True Voice split up as a group 6 months after the series finished.
All the finalists returned for this episode.
Hazel returned to perform live on stage after having given birth.
This epsiode aired between 6.45pm and 7.45pm.
All the losing finalists joined the two groups on stage to sing Winter Wonderland.
The girls had been the bookies favourites to get the Christmas number one.