Band Aid 20 stayed at number one for four weeks
Band Aid's 2004 version of Do They Know It's Christmas? is the decade's best-selling seasonal song in the UK, according to new figures.
The hit beat Christmas Time (Don't Let The Bells End) by rock band The Darkness into second place, the Official UK Charts Company has said.
The Pogues' 1987 hit Fairytale of New York at number three is the highest-placed song recorded before 2000.
The figures were compiled from the decade's physical and digital sales.
Christmas carols rundown
Mariah Carey's All I Want For Christmas Is You and Proper Crimbo from comedy show Bo'Selecta round out the top sellers at number four and five respectively.
DECADE'S CHRISTMAS BEST-SELLERS
1 Do They Know It's Christmas? - Band Aid 20
2 Christmas Time (Don't Let The Bells End) - The Darkness
3 Fairytale of New York - The Pogues feat. Kirsty MacColl
4 All I Want For Christmas Is You - Mariah Carey
5 Proper Crimbo - Bo'Selecta
Source: Official UK Charts Company
Other seasonal hits which continue to sell decades after their original release date include Wham's Last Christmas from 1984, the seventh best-seller of the past 10 years.
Released in the same year, the original recording of Do They Know It's Christmas Time is at 18 on the list.
Perennial Christmas hits from the 1970s - Merry Christmas Everybody by Slade and Wizzard's I Wish It Could Be Christmas - make the lower end of the top 20.
Among the few songs without an obvious seasonal theme to figure in the rundown is The Power of Love by Frankie Goes To Hollywood, originally a hit in 1984.
S Club Juniors' 2002 cover of Puppy Love is the decade's number 10 Christmas single - but the record's flip side was Sleigh Ride.
Sir Cliff Richard made only 17 with his song Santa's List
The Official Charts Company also released a chart of Christmas carols for the first time, based on digital downloads from various albums and compilations.
O Holy Night came out at number one ahead of Silent Night and Once In Royal David's City.
The all-time chart-topper was a "bit of a surprise", according to OCC boss Martin Talbot.
But he said recordings by popular mainstream artists including Kathryn Jenkins and Celine Dion had fuelled its popularity.