Los Angeles - Robin Thicke's Blurred Lines is the most downloaded song of all time in the UK.
The 2013 smash hit, which features Pharrell Williams and rapper TI, has sold 1.54 million copies through digital stores since May 2013, the Officials Charts Company has confirmed.
The track comes ahead of singer Adele's Grammy Award-winning ballad, Someone Like You, which has been bought 1.53 million times.
Robin told OfficialCharts.com: "I'm so honoured, the success of Blurred Lines is a dream come true"
Official Charts Company executive Martin Talbot added: "Blurred Lines is surely one of the catchiest pop hits of all time, so its success is no great surprise. But to become one of only two tracks to have been downloaded 1.5m times - and climb to the top of the poll as the biggest download of all time - is an incredible achievement."
Other songs which are among the UK's most downloaded include Moves Like Jagger by Maroon 5 and Christina Aguilera, Somebody That I Used to Know by Gotye and Kimbra, and I Gotta Feeling by the Black Eyed Peas.
The top ten is rounded out by Daft Punk's Get Lucky, Rihanna's We Found Love, Wake Me Up by Avicii, Happy by Pharrell Williams and Kings of Leon track Sex on Fire.
The countdown was compiled to celebrate the tenth anniversary of legal downloads contributing to the UK charts.