Coldplay's "X&Y" has exploded out of the blocks in the band's home market, Britain. The album sold more than 150,000 copies yesterday (June 6) on its opening day of sale in the United Kingdom, acc

Coldplay's "X&Y" has exploded out of the blocks in the band's home market, Britain. The album sold more than 150,000 copies yesterday (June 6) on its opening day of sale in the United Kingdom, according to industry-sanctioned sales data. Platinum certification in Britain is 300,000 units, and gold is 100,000 copies.

Mid-week sales data -- which will be circulated tomorrow on a limited basis to the British industry -- will indicate the album as a distant first place-getter.

According to retail sources, "X&Y" sold as many units on its first day as the rest of the top 20 chart albums combined. Britain's singles and albums charts are compiled by the Official U.K. Charts Company.

Retail observers suggest the album could reach 500,000 over-the-counter sales for the week. The milestone has been achieved only once before, when Oasis' third studio album "Be Here Now" shifted 696,000 units in its first week on sale in August 1997. "Be Here Now" sold 424,000 units on its first day of sale -- a Thursday -- according to the OCC.

Dido's "Life For Rent" (Cheeky/Arista) scanned 400,000 copies in 2003 to register the second biggest-selling week one in Britain. Over-the-counter sales data have been collated since 1994.

"X&Y" has already shipped 1 million copies in Britain, Billboard.biz has learned.

A representative for market leading specialist music retail chain HMV U.K. says "X&Y" looks set to be the second-fastest selling British album of all time and the biggest seller this decade.

"We're still inclined to be cautious and think 400,000 is realistic, which would make it the second biggest week one album ever in U.K. sales history," comments HMV Europe product director Steve Gallant.

The album landed on the same day as XL Recordings' frontline White Stripes album release "Get Behind Me Satan" and the Tears' debut Independiente set "Here Come the Tears," which helped generated a "halo effect" with other sales, retailers note. "It was a super Monday for specialists," adds Gallant.

Sales of Coldplay's two previous albums have topped 17 million units combined, according to EMI.

"X&Y" is available today (June 7) on Capitol in the United States.