Hi °C | Lo °C 
Olly Murs has secured the fourth number one single of his career as his Flo Rida assisted track Troublemaker shifted more than 120,000 copies this week to beat the comeback single from Girls Aloud to the top of the chart.
The girls made it 16 top five hits with charity single Something New, raising money for Children In Need, while boyband One Direction dropped two places to number three with Little Things, according to the Official Charts Company.
Labrinth featuring Emeli Sande remained at number four with Beneath Your Beautiful, while Alicia Keys came in at number five with Girl On Fire.
Rihanna's Unapologetic entered the album chart at number one - her fourth number one album.
She displaced One Direction, whose Take Me Home slipped a place to number two, while the remainder of the top five were all new entries - DNA by Little Mix at number three, Led Zeppelin's live album Celebration Day at number four and Christmas by Michael Buble at number five.
Another new entry in the top 10 was Standing Ovation - The Greatest Songs, a new compilation from Susan Boyle, at number seven.
