1. Mark Ronson & Bruno Mars - 'Uptown Funk'
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This Week's Top 10 (18th January 2015)
10. 1. Mark Ronson & Bruno Mars - 'Uptown Funk'
They have done it. The dominating duo have secured the longest reign at No.1 since Meghan Trainor spent a 5-week stint at the top last year. This makes it SIX weeks and still the only No.1 single of 2015.