Dance craze 'Gangnam Style' leads the midweek chart update by 6,000 copies, while The Script fall to two with 'Hall Of Fame'.
Flo Rida jumps from nine to three with 'I Cry', Taylor Swift is up to four with 'We Are Never Ever Getting Back Together' and Ne-Yo is at five with 'Let Me Love You'.
DJ Fresh lands just outside the Top 10 at 11 with 'The Feeling', while Paloma Faith is at 13 with her INXS cover Never Tear Us Apart.
Elsewhere, Conor Maynard advances to 16 with 'Turn Around', The Fray's 'How To Save A Life' is at 22 after X Factor exposure and Tulisa's 'Live It Up' is at 32.
Meanwhile, Mumford & Sons are on course to claim their first UK number one album with Babel.
The folk act's second studio set has sold nearly 90,000 copies so far this week, while Green Day's Uno! currently follows at two.
Deadmau5 lands at six with > album title goes here<, Lucy Rose is at 10 with Like I Used To and No Doubt are at 13 with Push And Shove.
Watch the music video for Psy's 'Gangnam Style' below: