Summer holidays put a dampener on sales, while Dizzee holds at one.

With the expected challenge from Kid Rock and The Ting Tings not materialising, Dizzee Rascal's Dance Wiv Me collaboration with Calvin Harris and Chrome extends its stay at number one to four weeks. Even its inclusion on Now! 70 - which enjoyed a huge first-week sale - did little to diminish support for the Dance Wiv Me single, which sold a further 38,275 units (8.6% down, week-on-week) to take its career sales to 182,652. Despite its long stay at number one - a tenure beaten in 2008 only by Basshunter's Now You're Gone and Duffy's Mercy - it still ranks only 25th for the year to date.

Kid Rock's All Summer Long's continues to climb towards the top of the chart, although its sales gallop has slowed with an increase of 9% this week to 34,501, as it climbs 3-2. The song's success continues to provide impetus for Sweet Home Alabama, on which it is partly based. The Lynyrd Skynyrd track climbs 52-44 on sales of 3,288.

The fact that Now! 70 is out, and the fact that kids are away on holiday helped to make it an odd week for singles, with no fewer than seven climbers in the Top 15 being songs which have already peaked and are mostly just gravitating upwards to fill the void. These include Ne- Yo and Rihanna's respective former chart-toppers Closer (up ...