Britney Spears and will.i.am have brought the UK release date of their new single forward due to popular demand.

The chart-topping stars have collaborated on upbeat dance tune 'Scream & Shout', which is already available in America and parts of Europe.

The track will now be available to download in the UK on December 9, Spears's UK publicist confirmed, adding that the release has been brought forward "due to demand".

'Scream & Shout' has received a warm reception - and is currently riding high at the top of the US iTunes chart.

Meanwhile, the director of the 'Scream & Shout' video has gushed about working with Spears.

Ben Mor told MTV News: "I mean, she's kind of an enigma. Every generation has their pop queen/icon, and I think she is just that person. Needless to say, her track record speaks for itself: her albums, her music, her iconic past videos and all the stuff she's done. She's earned her stripes. You're dealing with an institution."