His single Wonderful - featuring R Kelly and Ashanti - shot straight into the top spot, knocking Prydz's Call On Me down to number two.
There were a further four new entries in the top 10.
Daniel Bedingfield went in at number three, with Jay Sean just behind him at four, Dannii Minogue at number seven and The Libertines at nine.
Robbie Williams held on to the top of the album chart with his Greatest Hits.
Veteran
Ronan Keating's 10 Years Of Hits remained at number two, with veteran rocker Rod Stewart making up the top three.
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