When will the 2021 Christmas Number 1 be announced?

All the important details about this year's Official Christmas Number 1.

The battle for the Christmas Number 1 is a festive tradition that goes back decades - and bagging the top spot is still considered the ultimate accolade in pop.

This year is shaping up to be one of the most hotly-contested races yet, as December 2021 will mark the 70th Official Christmas Number 1.

Previous years have seen a wide variety of songs claim the festive crown; wintry ballads, huge charity singles, dance bangers and quirky novelty numbers that, let's be honest, could only hit the top spot at Christmas. 

The first ever Official Christmas Number 1 was won by Al Martino's Here In My Heart in 1952, while 2020 saw LadBaby secure the last in a hat-trick of chart-toppers with his third consecutive Christmas Number 1 Don't Stop Me Eatin', released in aid of foodbank charity The Trussell Trust.

The 2021 Official Christmas Number 1 will be announced on Friday, December 24. The full Christmas Top 40 will be counted down on BBC Radio 1's Official Chart from 4pm. 

The full Top 100 Official Christmas Singles Chart and Albums Chart will be published on OfficialCharts.com from 5.45pm.

MORE: Every Official Christmas Number 1 ever

LadBaby celebrating a hat-trick of Official Christmas Number 1s.

LadBaby is going for a record this year, hoping to claim a fourth consecutive Christmas Number 1 with Sausage Rolls For Everyone, a rework of Ed Sheeran and Elton John's Merry Christmas - a features the superstars themselves. Check out the full list of contenders for the festive crown here.

Anyone who wants to be in with a shot at landing the Official Christmas Number 1 Award must make sure their single is available from December 17, which is when the race officially kicks off. The cut-off point for sales and streams to be counted toward the Official Christmas Singles Chart is 11.59pm on December 23. 

MORE: Details of Top of the Pops' Christmas and New Year shows

Make sure you’re following Official Charts on Twitter, Instagram and Facebook for updates throughout the race. Join in the Christmas Number 1 conversation using #XmasNo1 and #OfficialChart.

This year we've joined forces with Nine Eight Books to bring you the first-ever official guide to every Christmas Number 1 single in history - The Official Christmas No. 1 Singles Book is available from our online shop now.