The Arctic Monkeys are on course to break another chart record, this time on digital sales.

Thanks to a relaxing in January of the rules governing eligibility for the Official U.K. Singles Chart, all 12 tracks from the new Domino album "Favourite Worst Nightmare" are expected to enter the national top 200.

Based on digital download sales counted for the first three days from its release on Monday (April 23), 11 tracks from the set were among the country's top 120, with lead single "Brianstorm" anchoring a top 5 spot. Moreover, 10 tracks from the album were in the top 75 during that period.

Britain's sales charts are compiled by the Official U.K. Charts Company.

"This not only underlines the growing iconic status of the Arctic Monkeys as the U.K.'s leading rock act," comments HMV U.K. and Ireland spokesman Gennaro Castaldo, "but visibly demonstrates how the recent changes to the rules governing chart eligibility have impacted on the make-up of the charts."

Having exploded with almost 85,000 overall sales on its opening day, "Favourite Worst Nightmare" is strolling toward the No. 1 position when the Official U.K. Albums Chart is published this Sunday.

U.K. retail sources say the album looks likely to emulate the band's January 2006 debut by breaking the 250,000 milestone by the end of week one. In Britain, platinum certification is awarded to albums that have shipped 300,000 units.

The Sheffield, England, alternative rockers' first album, "Whatever People Say I Am, That's What I'm Not," became Britain's best-selling debut when it clocked up 363,735 copies in its week of release in Britain last year, and cracked a number of records along the way.

The previous record for a debut was held by reality TV show-spawned pop act Hear'Say's, whose inaugural 2001 set "Popstars" (Polydor) sold 306,631 units in its first week, according to the OCC.

Oasis "Be Here Now" (Creation) holds the record for the fastest-selling album of all time in Britain, since records began. The album shifted 655,000 copies in its week of release in August 1997.