The boyband's latest single 'Chasing The Sun' has topped the midweek chart update, while fun.'s 'We Are Young' remains at number two.
Carly Rae Jepsen stays put at number three with 'Call Me Maybe', Alex Clare is at four with 'Too Close' and Rita Ora's 'R.I.P.' is at five.
Paloma Faith lands at six with 'Picking Up The Pieces' and is followed by Jennifer Lopez's 'Dance Again' at eight.
The Saturdays fall to 16 with '30 Days', Scissor Sisters are at 19 with 'Only The Horses' and Skrillex is up to 27 with 'Bangarang'.
Meanwhile, Martin Solveig's 'The Night Out' debuts at 33 and Pitbull is at 34 with 'Back In Time'.
Over on the album chart, Joe Bonamassa is on course to hit number one with his 13th studio album Driving Towards The Daylight.
John Mayer follows at two with Born and Raised, Adele's 21 is at three and The Enemy land at four with Streets In The Sky.
fun. are at nine with their new album Some Nights and The Temper Trap land at 14 with their self-titled second studio collection.
Watch the music video for The Wanted's 'Chasing The Sun' below: