Although Justin Timberlake is fully expected to sweep this week's charts with his newly released 20/20 Experience: 2 of 2, the race to No. 1 is much tighter in the U.K.

At press time, only 700 copies separate Haim's debut, Days Are Gone, from Timberlake's newest set. While Haim has seen a swift rise in the States this past year, the California sister trio exploded across the pond before gaining traction here at home.

The U.K.'s Official Charts Company will reveal the final standings on Sunday.