Sigur Ros enter high but cannot crack a Coldplay-led static top four.

Coldplay's Viva La Vida Or Death And All His Friends tops the albums chart for the third straight week, with sales of 109,553 taking its 17- day career haul to 609,605.

It is the 11th week that Coldplay have topped the chart since their 2000 debut, a total surpassed in the 21st Century by only two other acts. Ahead of them are Robbie Williams, with 23 weeks at number one, and Dido with 17. Sharing third place with Coldplay, James Blunt and Travis have also spent 11 weeks at number one. Eminem and Red Hot Chili Peppers are the only other acts to reach double figures, with 10 weeks apiece at the top.

Viva la Vida is the only album in an unchanged top four to see its sales fall week-on-week - Duffy's Rockferry sprints to 10.3% growth (50,765 sales) to lock its fifth week at number two; Neil Diamond's Home Before Dark is number three for the fourth of its seven weeks in the chart, with sales up 7.1% at 24,564; and Darren Styles' Skydivin' remains at number four with an exact repeat of the 22,197 copies it sold to debut in that position last week.

With Coldplay's album understandably selling far fewer copies than on its debut a fortnight ago and a less-than-thrilling release slate, album sales last week fell back - but only marginally, inching down 0.1% over the previous frame to 2,192,801. That small fall masks a 2.7% dip in artist album sales, and a 10.9% improvement in the compilation sector.

The latter market was cheered by the arrival of Clubland 13, which debuts at number one on sales of 43,285, earning the All Around The World/UMTV dance series its 15th number one since its 2002 launch, ...