It thus moves to the top of the year-to-date rankings, relegating Duffy's Mercy to second place. Hero is also up to 31st place on the list of best-selling singles of the decade.

Last week's runner-up, Beyonce, slips to number three with her If I Were A Boy attracting a further 57,917 downloads. She cedes second place to T.I. and Rihanna's Live Your Life, which rockets from number 39 on sales of 64,661 downloads.

The Killers secure their 11th Top 40 ...