Could Sam Smith become the first act to take a James Bond theme to Number 1 on the Official Chart?

Plus there are new entries on today's Update from Rudimental, Little Mix and Sia.

Sam Smith could be making Official Chart history this week, as his new single Writing’s On The Wall is on course to become the first ever Number 1 Bond theme.

The track has stormed out in front on this week’s tally, with double the combined sales of his closest competitor, Justin Bieber’s What Do You Mean?.

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

Believe it or not, none of the previous 23 James Bond themes have ever reached the top spot in the UK. Adele’s Skyfall (2012) and Duran Duran’s A View To A Kill (1985) have come the closest, each peaking at Number 2 (click here to see where every Bond theme has charted).

MORE: 007's Big Ones - The most downloaded Bond themes ranked

Meanwhile, R City and Adam Levine’s Locked Away holds firm at Number 3, Sigala’s former Number 1 Easy Love slips from 2 to 4, and The Weeknd’s Can’t Feel My Face completes the Top 5.

New entries and high climbers

Newcomer Nick Brewer looks set to make his Top 40 debut this week with Talk To Me, currently at Number 8. The track, which features singer-songwriter Bibi Bourelly, samples Crystal Waters’ house classic Gypsy Woman (La Da Dee), which reached Number 2 in 1991.

Rudimental could be landing their third Top 10 single this week as their Ed Sheeran collaboration Lay It All On Me is at 10 on today’s Update, and Macklemore & Ryan Lewis’ Downtown jumps four spots to Number 11.

Elsewhere, Little Mix debut at 14 with their freshly-unveiled new single Love Me Like You, Sia is heading for her eighth UK Top 40 with Alive (20), and One Direction’s Infinity climbs eight places to Number 28.

View this week's Official Top 100 Singles Chart Update (from 5.45pm)