will.i.am and Britney Spears' dance pop duet "Scream and Shout" narrowly holds on to the top spot on the singles chart this week in the UK. It prevents the returns of two top stars who were last in the top 10 performing together on a single from reaching the top. Who are those stars? Find out more in this week's coverage of the UK pop music charts.
Single cover courtesy Interscope