hesre's this:
http://www.thisismoney.co.uk/consumer/article. html?in_article_id=402443&in_page_id=5
There's also this re Leona Lewis:
One million copies of the winner's single were pre-ordered by stores, making it an almost certain number one before it was released, although at the time, the winner of the show had not been announced and it was unknown who would be releasing the single, a source of controversy for those who suggest it is the show which sold the single, and not Leona.
"A Moment like This" was downloaded 50,000 times within 30 minutes of being available online,[1] making it the fastest selling download to date, and the biggest selling download in one week. The single sold a total of 571,253 copies in its first week, outselling the rest of the Top 40 combined and making it the fastest selling single in the UK by a female artist, beating "...Baby One More Time" by Britney Spears.[2]
The single ended the year as the UK's second best selling single of the year, beaten only by Gnarls Barkley's "Crazy".[3] However, it was the most downloaded song in 2006.
In January 2007, the single was awarded platinum status by the British Phonographic Industry.[4]
As of November 2007, Lewis's version of the song has sold over 1,000,000 copies in the UK.