X-Factor alumnus Leona Lewis is sitting pretty at number one in the UK singles chart this week, having sold 133,591 copies of her cover of Snow Patrol''s Run.The twist? Every copy was digital. It's the fastest-selling digital-only single in UK chart history, apparently. It rounds off the digital year nicely for Leona, with her Bleeding Love single recently being named the biggest seller on iTunes for 2008.Her new chart-topper wasn't meant to be released as a single (so it's said), but it went down a storm when performed on Radio 1 and ITV show The X Factor, so the Great British Public demanded its release. Although the fact that it's been appended to a deluxe version of Leona's debut album makes us smell a fish in that story.
