A Mother's Day boost helped Adele's 21 extend its run at the top of the album charts to a record-breaking tenth week.
It became the first album to sell more than 100,000 copies for 10 weeks in a row. Last week's 257,731 sales was the best yet, pushing the 69-day total to 1,754,319.
The album has also now moved ahead of Madonna's Immaculate Collection for the most consecutive weeks at number one for an album by a female solo artist, and is one week away from sharing the all-time record with Shania Twain's Come On Over (1999) and Alanis Morissette's Jagged Little Pill (1996), both of which required multiple tenures to amass 11 weeks at number one.
The last album to spend more consecutive weeks at number one by any act was Bob Marley & The Wailers' Legend, which reigned for 12 weeks in 1984.
21's domination is such that it has sold more than a million more copies in 2011 than its nearest challenger - which just happens to be Adele's 2008 debut album 19, which moved from three to two on the year to date rankings with 465,289 2011 sales (73,276 of them last week, just 64 below its first/best weeks sale), raising its career tally to 1,196,100.
Adele did lose the number-one singles spot to On The Floor, the introductory single from Jennifer Lopez's seventh album, Love?.
Profiting from four weeks of airplay before its release, the track, which features a rap from Pitbull, is Lopez's third number one, following Love Don't Cost A Thing (2001) and Get Right (2005). Its first week sales of 133,179 copies were the highest by any single for 11 weeks and represented a new high for the New Yorker.
Adele's Someone Like You dipped to number two on the weekly chart but still notched up another significant success: sales of 65,414 copies last week made it the year's best-selling single so far with overall sales of 698,020 overtaking Bruno Mars' Grenade (665,054).
American rappers LMFAO landed their third Top-10 hit, with Party Rock Anthem up rising from 22 to three (53,657 sales). The first single from their second album, Sorry For Party Rocking, it also features Lauren Bennett and Goonrock.
Black Eyed Peas' latest single, Just Can't Get Enough, slipped from three to four but actually registered a 10.40% increase in sales week-on-week to 50,166.
Katy B racked up her fourth Top 20 hit and third Top 10 hit in seven months, with Broken Record providing this week's highest debut, at number eight (32,804 sales).
The chart's other Katy - Katy Perry - secured her fourth Top 20 hit from her second album Teenage Dream with E.T. rising from 29-12 (25,672 sales). The track, which also features Kanye West, follows California Gurls (number one), Teenage Dream (number two) and Firework (number three).
Internet phenomenon Rebecca Black's debut single Friday made modest progress, rising 61-60 (4,554 sales) on its second week on the chart.
Overall singles sales, at 3,151,625, were up 5.64% week-on-week, and 10.62% above same week 2010 sales of 2,849,161.
In the album charts, Radiohead's eighth album, The King Of Limbs, went legit last week, with the digital version spreading to other retailers, and LP and CD versions being released. It debuts at number seven, with 33,469 sales.
Britney Spears' seventh studio album, Femme Fatale, will be her sixth number one in her native America but the 29 year old has never made number one here, and Femme Fatale failed to break her duck, debuting at number eight (31,650 sales). Spears' last studio album, Circus, opened at number four and enjoyed brisk first week sales of 76,231 thanks to its November release date.
The first finalist from the seventh season of The X Factor to deliver an album, Mary Byrne debuted at number six with Mine & Yours.
There were also Top 40 debuts this week for David Garrett's Rock Symphonies (number 21, 11,119 sales); Within Temptation's The Unforgiven (number 23, 10,460 sales); Panic At The Disco's Vices & Virtues (number 29, 8,998 sales); and The Band Of The Coldstream Guards' Pride Of A Nation (number 36, 6,929 sales.
The Mothers Day effect helped sales to climb 32.66% week-on-week to 2,457,831. That's 9.36% above same calendar week 2010 sales of 2,247,421, which coincided with the Easter weekend. Mother's Day last year came two weeks earlier and precipitated sales of 2,590,338 - 5.39% higher than last week.