James Arthur is battling The Chainsmokers on this week's Official Singles Chart Update

James Arthur is challenging for this week’s Number 1 on the Official Singles Chart with his comeback track Say You Won’t Let Go. 

The song has leaped a massive 23 places to Number 2 on today’s update and is the most downloaded track of the week so far. Current Number 1 Closer by The Chainsmokers and Halsey is still leading the way, 10,000 combined sales ahead. Can James go all the way by Friday’s Official Chart announcement?

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

Meanwhile Calvin Harris is on track a Top 5 debut this week with his new single My Way, currently at 5, and Ariana Grande and Nicki Minaj's Side To Side climbs a spot to Number 7.

New entries and high climbers

More new chart peaks are on the horizon for Ellie Goulding and Olly Murs this week; Ellie's Still Falling For You gains ground from Number 21 to Number 11, while Olly's You Don't Know Love is up 5 to Number 13.

Emeli Sande's first single in over two years Hurts starts at Number 18, Digital Farm Animals and Cash Cash's Millionaire featuring Nelly advances ten places to 28, and Matoma and Becky Hill's False Alarm is charging to a new high of 31, up nine spots. 

Finally, Kanye West's Fade featuring Post Malone and Ty Dolla Sign could be making its Top 40 debut this week, currently up 27 places to Number 38. 

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

Remind yourself of every Official UK Number 1 single of 2016 so far below: