page_title: List of UK Singles Downloads Chart number ones of the 2000s
section_title: By artist
hierarchical_section_title: List of UK Singles Downloads Chart number ones of the 2000s / Number ones / By artist
caption_attribution_description: Gnarls Barkley at mini V festival in Melbourne, Victoria (Australia)
context_page_description: The UK Singles Downloads Chart is a weekly music chart that ranks the most-downloaded singles in the United Kingdom. During the 2000s, the chart was compiled by The Official UK Charts Company on behalf of the British music industry, and was based solely on non-subscription music downloads from selected online music stores. It was compiled using weekly sales from Sunday to Saturday, and was published each Wednesday afternoon, so as not to clash with the Sunday evening announcement of the UK Singles Chart.
  The chart was founded in September 2004 as the UK Official Download Chart, with the first single to top the chart being a live version of "Flying Without Wings" by Irish boy band Westlife. By the end of the decade, 109 further singles had topped the chart. The most downloaded single of the 2000s was "Poker Face" by Lady Gaga. Released in 2009, the song was downloaded 779,000 times, and topped the chart for three weeks. "Just Dance", also by Gaga, and "Sex on Fire" by Kings of Leon were the third and second highest selling downloads of the decade respectively.
context_section_description: Fifteen different artists spent seven or more weeks at the top of the UK Official Download Chart during the 2000s. The totals below include only credited performances, and do not include appearances on charity ensembles such as Band Aid 20 or The X Factor Finalists.
caption: "Crazy" by Gnarls Barkley spent eleven weeks at the top of the chart, longer than any other single.
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