Fleur East, Andrea Faustini and Ben Haenow are reported to have already recorded their "winners songs" for The X Factor.

The trio are set to do battle in the ITV talent show's grand finale this weekend - with the winner then able to release their track digitally as soon as they are crowned on Sunday.

The Mirror reports that Fleur has recorded Whitney Houston's I Didn't Know My Own Strength, while both the boys have opted for OneRepublic's Something I Need.

A source told the paper: "Whoever wins, the song choices are very strong. They are set to be sure-fire hits."

However the winner's single will have to do battle with Mark Ronson's Uptown Funk - the release of which was brought forward after Fleur performed it last weekend.

Fleur is now the bookies' favourite to win on odds of 2/5, while Ben trails her on 11/4 and Andrea offers a big return on 20/1.