![Simon Cowell said it was the BEST final performance he has EVER SEEN! The X Factor UK](https://ytimg.googleusercontent.com/vi/RE2hvNyG9j8/hqdefault.jpg)
Simon Cowell said it was the BEST final performance he has EVER SEEN! The X Factor UK
We ALL remember this cover of 'Uptown Funk' by Bruno Mars and Mark Ronson!
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