The UK Singles Downloads Chart is a weekly music chart that ranks most-downloaded songs in the United Kingdom over the past seven days. It is compiled by the Official Charts Company on behalf of the British music industry, and is based solely on non-subscription downloads of songs from official music retailers. The chart was founded in 2004 and was first published on 1 September that year. The first ever number one was "Flying Without Wings" by Irish boy band Westlife. Since then, , 500 different tracks have reached number-one on the UK Singles Downloads Chart. The following table lists those artists. The totals do not include non-credited appearances (such as those on multiple-artist charity ensembles), although they are listed below.
Artists +Key[x]Indicates that, with this single, the artist becamethe first act to have six number one singlesChristmas number one