Sigala's Sweet Lovin' is challenging Justin Bieber for this week’s Number 1 single

Plus a string of classic Christmas songs are set to enter this week's Top 40.

He’s been dominating the chart for weeks, but could Justin Bieber’s reign at the top be over on this week’s Official Singles Chart?

The DJ/producer Sigala's new single Sweet Lovin’ is charging up this week’s Top 40, zooming 66 places to Number 2 on today’s Official Chart Update, just behind Bieber’s current leader Love Yourself. Can he go all the way by Friday?

MORE: See this week's Top 100 Official Singles Chart Update in full

If Sigala pulls it off, it would be his second chart-topping single following Easy Love, which hit Number 1 back in September.

Meanwhile, Justin Bieber’s Sorry is at Number 3, Adele’s Hello at 4, and Grace ft. G-Eazy’s You Don’t Own Me completes the Top 5.

New entries and high climbers

Coldplay are on their way to score their 16th Top 10 single this week, as Adventure Of A Lifetime climbs six places to Number 9 today, and Sigma and Rita Ora’s Coming Home vaults from 26 to 11.

Further down the chart, a string of Christmas songs are set to enter this week’s Top 40. Mariah Carey’s All I Want For Christmas Is You, which re-entered at 35 last week, zooms to Number 14 today, The Pogues ft Kirsty MacColl’s Fairytale Of New York moves 39 spots to 19, Wham’s Last Christmas is at 26 (up 39 places), Wizzard’s I Wish It Could Be Christmas Everyday climbs to 38 (up 41 places) and Shakin’ Stevens’ Merry Christmas Everyone is at 43 (up 42 places).

Finally, Martin Solveig is on track to enter this week’s Top 40 with +1, currently at 37.  

See this week's Top 100 Official Singles Chart Update in full