Fergie's back and giving Mark Ronson a run for his money challenging the Uptown Funk hit maker for this Sunday's No.1.

Her new track L.A. LOVE (la la),according to this week's Official Chart Update, currently sits at No.2, behind Ronsonwho last week scored the UK chart double for the first time since Miley Cyrus did it back in 2013 whenhis new album Uptown Special hit the album top spot.

Elsewhere in the midweek Top 10,Hozier stays put at No.3 with Take Me To Church and Karen Harding enters at No.4 with Say Something.

Since her surprise release this week of her new single withKanye and Paul McCartney, Rihanna's FourFiveSeconds enters at No.5 and could climb even further by the weekend.

Down four at No.6 is Meghan Trainor's Lips Are Movin and Philip George falls three places to No.7 with Wish You Were Mine.

Olly Murs and Demi Lovato fall to No.8 with Up while this week's third new entry comes from Hannah Wants & Chris Lorenzo's Rhymes.

Rounding off the Top 10 this week is good ol' Ed Sheeran with Thinking Out Loud.

Find out if Mark Ronson can stick it out at the top this Sunday by following @MTVMusicUK on Twitter.

'Chart information © Official Charts Company 2015.'