Now! boosts compilation chart.

While the singles chart title changes hands again after a 10-week freeze, the artist album chart has its first repeat champion for eight weeks as Paul Potts completes an easy second week at number one with his debut album One Chance. Ineligible for the classical chart, as too many of its tracks are not classical repertoire, it is the first classical crossover set to be number one for two weeks in a row since the London Stage Cast version of Andrew Lloyd Webber's Phantom Of The Opera in 1987.

While Potts' sales of 75,494 were more than three times as many as artist chart runner-up Timbaland's 22,136, they were only a third of the 226,630 sales logged by Now! 67 as it debuted atop the compilations chart. Now! 67's release sparked a 53% expansion in the compilation market to 707,671, helping overall album sales to improve 7.9% to 2,317,896. Its sales were the second highest in a week by any album this year, trailing predecessor Now! 66's introductory tally of 288,579 16 weeks ago. Now! 67's start is also significantly down on the 278,795 copies its 2006 equivalent Now! 64 sold on its debut a year ago this week.

Meanwhile, singles sales improved 3% to 1,438,556, with a very close battle for pole position resulting in ...