List of most-downloaded songs in the United Kingdom

A music download is the transfer of music as a digital file from a provider (such as iTunes) to a device capable of playing it; legal sales of music downloads have been monitored and charted in the United Kingdom since 2004. As of 19 September 2017, the UK's most-downloaded song of all time is "Happy" by Pharrell Williams, which topped both the UK Singles Downloads Chart and UK Singles Chart.

Source: Wikipedia — List of most-downloaded songs in the United Kingdom (CC BY-SA 4.0)