The U.K.'s new bestselling single is Bruno Mars' "The Lazy Song" (Elektra/ Warner Music), after it moved up 2-1 yesterday (15) to end the four-week reign of "Party Rock Anthem" (Interscope/Universal) by LMFAO featuring Lauren Bennett and Goonrock. Adele's "21" (XL Recordings) tops the album chart for the 15th time, of which the first 12 were consecutive.

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Mars has now had three U.K. No. 1 singles from "Doo-Wops & Hooligans," which itself topped the album chart in January. "The Lazy Song" follows similar success for "Just The Way You Are (Amazing)" last September and for "Grenade," also in January. The album has now passed sales of 500,000, according to the Official Charts Company, and moved up 5-4 on the new chart.

The big newcomer on the album chart was British actor-turned-bluesman Hugh Laurie's "Let Them Talk" (Warner Bros./Warner Music), which followed intense publicity and promotion with a No. 2 debut. Adele's first album "19" held at No. 3, just ahead of Mars, but Fleet Foxes fell three places to No. 5 with "Helplessness Blues" (Bella Union).

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Also debuting in the album chart's Top 10 were the "Glee" spinoff album, "Glee Presents The Warblers" (Epic/Sony Music Entertainment), at No. 7 and Sade's "The Ultimate Collection" (Sony Music Entertainment) at No. 8. Chase & Status climbed back 12-9 with "No More Idols" (Mercury/Universal), and Miles Kane, sometime partner of Arctic Monkeys' Alex Turner in the Last Shadow Puppets, opened at No. 11 with "Colour Of The Trap." Wild Beasts' "Smother" (Domino) started at No. 17. "Now That's What I Call Music! 78" (EMI Virgin/ UMTV) started a fifth week atop the compilation chart.

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Also on the singles chart, "Where Them Girls At" (Positiva/Virgin/EMI), by David Guetta featuring Flo Rida & Nicki Minaj, held at No. 3, and "Give Me Everything" (J/Sony Music Entertainment), by Pitbull featuring Nayer, Afrojack and Ne-Yo improved again, 12-4. Lady Gaga's "The Edge of Glory" (Interscope/Universal), released only last Tuesday, sold well enough for a No. 6 debut, as her previous hit "Judas" climbed back 20-11.

U.S. soulman Aloe Blacc's sleeper hit "I Need A Dollar" (Epic/Sony Music Entertainment) moved up another notch to No. 9, and there were top 20 starts for British-Iranian DJ-artist Yasmin's "Finish Line" (Levels/Ministry of Sound) at No. 13, Take That's new theme for the "X-Men: First Class" movie, "Love Love" (Polydor/Universal) at No. 15 and Romanian dance hitmaker Inna's "Sun Is Up" (3 Beat/All Around The World/Universal) at No. 17.