The song has shifted 108,390 units in the past week according to Official Charts Company data - bringing lifetime sales to over 500,000.
Olly Murs' Dance With Me Tonight climbs four places to No.2, with 76,822 sales in the week ending Saturday December 31st, and 340,241 sales overall.
Flo Rida's Good Feeling jumps from No.7 to No.3, whilst last week's No.1, The Military Wives' Wherever You Are, drops to No.4 - with lifetime sales now clocking up to 631, 950.
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