The singer – who yesterday won huge acclaim for her new single Sober – teamed up with Clean Bandit last month for the song Solo, which is now the country’s chart-topper.
Solo marks Lovato’s first Number One on our shores after previously peaking at No3 with Heart Attack in 2013, and No4 with her collaborations with The Vamps and Olly Murs.
She had also hit the Top 10 with Skyscraper, Cool For The Summer and Sorry Not Sorry.
Clean Bandit told OfficialCharts.com of the 25-year-old: “She was lovely.
“We actually did the recording over Skype, so it was a bit awkward as we’d never met in real life and there was, like, a delay, but then when we met properly to make the music video, it was so fun.”
And of their fourth No1 hit, following Rather Be, Rockabye and Symphony, they beamed: “Thank you so much to all of our fans. We can’t believe it!
“It’s amazing for us and we’re so happy that you’re listening to this song!”
Elsewhere XXXTentacion has three tracks in the Top 40 following his death: Sad, Moonlight, and Changes at Numbers 31, 32, and 33 respectively.
Over on the album chart, The Greatest Showman logs a 20th non-consecutive week at the summit, one spot ahead of George Ezra’s enduring Staying At Tamara’s.
5 Seconds of Summer score the week’s highest new entry with Youngblood at No3, while The Carters – Beyonce and Jay-Z – manage to chart at No5, despite releasing Everything Is Love almost two full days later in the tracking week.
Christina Aguilera’s new set Liberation bows at No17, 11 places higher than her last collection; 2012’s Lotus.
Lovato’s achievement means she will be at Number One when she performs her delayed date at London’s O2 Arena on Monday.
It’s been a big week for her: yesterday Sober appeared to confirm that she has relapsed with her alcohol addiction after six years of sobriety.
Solo by Clean Bandit featuring Demi Lovato is out now.