Adele 2016

Adele performs on stage at the SSE Arena Belfast on Feb. 29, 2016 in Belfast, Northern Ireland. 

Gareth Cattermole/Getty Images

Adele’s 25 (XL) is heading for an 11th week atop the U.K. albums chart while Mike Posner is challenging Lukas Graham for No. 1 on the singles chart. 

Adele’s third album is enjoying a sales bump as the superstar’s world tour makes its way across the U.K. Her multi-platinum set is outselling the rest of the top 3 combined -- Jess Glynne’s I Cry When I Laugh (Atlantic) and Justin Bieber’s Purpose (Def Jam), respectively -- at the midway stage of the chart week, the Official Charts Company reports. David Bowie's Best of Bowie (Rhino) is at No. 4 on the Official Albums Chart Update while Coldplay's A Head Full of Dreams (Parlophone) is at No. 5.

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A raft of new releases are on track to crack the top 20 including Killswitch Engage's seventh studio album Incarnate (No. 7 via Roadrunner), Brian Fallon of The Gaslight Anthem with his solo debut Painkillers (No. 8 via EMI), the posthumous Jeff Buckley compilation You & I (at No. 11 via Columbia/Legacy), Alessia Cara's debut Know-It-All (at No. 12 via Def Jam) and Aurora's All My Demons Greeting Me as a Friend (at No. 16 via Decca).

Meanwhile, Lukas Graham’s "7 Years" (Warner Bros) is leading the race to the singles chart crown, though victory isn’t a formality. The chart-topping hit is just 3,000 combined sales ahead of the Mike Posner’s comeback track "I Took A Pill In Ibiza" (Island), currently at No. 2 on the midweek chart. 

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Zara Larsson’s "Lush Life" (Epic/Record Company Ten) is at No. 3 on the U.K. Singles Chart Update, Fifth Harmony’s "Work From Home" (Epic/Syco) rises 11-4, and Rihanna’s "Work" is at No. 5 (Roc Nation).

Ariana Grande’s new track "Dangerous Woman" (Republic) opens at No. 11 -- the week's highest debut -- at the halfway point and Zayn’s latest "Like I Would" (RCA) is at No. 25.

The Official U.K. Charts are published late Friday local time.