Ed Sheeran and Elton John are heading for the top of the U.K.'s Official Singles Chart with their “Merry Christmas” (Atlantic). Over on albums, Adele’s 30 (Columbia) is set for a third week at #1.

“Merry Christmas” has more than double the sales of its closest competition, Adele’s “Easy on Me,” at #2. It leads a legion of festive tunes in the Top 20 this week; George Ezra’s Amazon Original “Come on Home for Christmas” is up 31 places to #5, followed by The Pogues & Kirsty MacColl’s “Fairytale of New York” (Warner Music U.K.) at #6.

Shakin’ Stevens’ “Merry Christmas Everyone” (Sony) is #7, Michael Bublé’s “It’s Beginning to Look a Lot Like Christmas” is #8 and Brenda Lee’s “Rockin’ Around the Christmas Tree” (Universal) bops in at #9.

On the U.K.'s Official Albums midweeks, JLS is Adele’s closest competitor, with its first album of original material in eight years, 2.0 (BMG) starting at #2.

Elsewhere in the Top 10, Bublé’s Christmas (Reprise) is up one place to #5. Indie band The Lottery Winners could secure their first U.K. Top 10 entry, with Something to Leave the House For (Modern Sky) at #6.

Following the announcement that Little Mix is set for an extended hiatus to pursue solo projects, the band’s greatest hits collection, Between Us (Sony), is up one to #8.

Andre Rieu and his Johann Strauss Orchestra could enter the Top 10 for the first time with Happy Together (Universal), up three to #9. Servant of the Mind (Universal) from Danish rock band Volbeat is eyeing a new entry at #13.