Mike Posner and Sigala battle it out for chart top spot
It could be a photo finish for this week's number one single as less than 600 sales separate current chart-topper Mike Posner and new entry Sigala.
Posner's I Took A Pill In Ibiza stole the top spot last week from Danish band Lukas Graham in the closest chart battle in nearly a decade, but the American singer's comeback track now sits in second place, just 568 sales behind Sigala's collaboration with Imani and DJ Fresh, Say You Do.
Lukas Graham's 7 Years slots in at three, Zara Larsson's Lush Life drops to four and Fifth Harmony's Work From Home rounds off the Official Charts Company midweek update at five.
On track for their first number one album in nearly two decades are British rockers James, whose 14th studio album, Girl At The End Of The World, looks set to score the Manchester seven-piece their first top spot since their 1998 Best Of album.
James are fewer than 2,000 combined sales ahead of their nearest competitor but could knock Adele's juggernaut album 25 off the throne if they hold firm until Friday.
Two new entries help round off the album top five, with Iggy Pop's 17th offering Post Pop Depression debuting at three and Underworld's first album in six years, Barbara Barbara, We Face A Shining Future new in at four.
Justin Bieber's Purpose drops three places to fifth.