Calvin Harris and Sam Smith's Promises set for third week at Number 1 on the Official Singles Chart

Plus new singles by Jason Derulo and Sigala are on course to enter the Top 40 for the first time.

Calvin Harris and Sam Smith are on course to score a third week at Number 1 on the Official Singles Chart with their new collaboration Promises.

After a weekend of streaming and downloading, the track is seeing off competition from Kanye West & Lil Pump's I Love It (3) and former chart-topper Eastside by Benny Blanco ft. Halsey & Khalid (2) to extend its reign at the summit. Check out Calvin Harris' biggest singles in the UK according to Official Charts Company data.

The latest single from producer Marshmello, a collaboration with Bastille called Happier, is currently up one place to Number 5, potentially earning the DJ a third UK Top 5 single and a fourth for Bastille.

New entries and high climbers

Two songs are making strides towards this week's Top 10: In My Mind by Dynoro & Gigi D'Agostino zooms six places to Number 8, and Jess Glynne's All I Am hops two spots to Number 9. Silk City (aka Mark Ronson and Diplo)'s Electricity ft. Dua Lipa is currently just outside, up three to Number 11.

The release of David Guetta's new album 7 boosts his latest single Don't Leave Me Alone ft. Anne-Marie eight places to Number 15 (check out his Official Top 40 biggest singles here), and after making her Top 40 debut last week, rising star Freya Ridings looks set to climb further with Lost Without You, so far up another five places to 21.

Australian singer-songwriter Dean Lewis is set for another climb this week with breakthrough hit Be Alright (23), and further down, two singles could be making their Top 40 debut this week: Jason Derulo's Goodbye ft. David Guetta, Nicki Minaj and Willy William moves up ten spots to 34, and Just Got Paid by British producer Sigala ft. Ella Eyre, Meghan Trainor and French Montana vaults 12 rungs to 39.