The electronic trio's final track before their indefinite hiatus beat Adele's 'Skyfall' by 43,000 sales to the top spot. The James Bond theme climbed two to claim the runner-up spot, prolonging the wait to crown the first ever Bond chart topper in the UK.
Psy falls one place to three with 'Gangnam Style', with last week's number one 'Diamonds' by Rihanna dropping three to four.
Ellie Goulding is a non-mover at five with 'Anything Could Happen', while One Direction fall three to six with 'Live While We're Young'.
Leona Lewis lands at seven with her new single 'Trouble' with Childish Gambino. Conor Maynard and Ne-Yo climb one with 'Turn Around' at eight.
Flo Rida drops two places to nine with 'I Cry', while former number one 'Hall of Fame' by The Script and will.i.am falls four to ten.
Maroon 5's latest single 'One More Night' enters at 18, while Taylor Swift scores her fourth Top 40 placing from her new album Red with 'I Knew You Were Trouble' at 23.
Disclosure land at 26 with their Sam Smith collaboration 'Latch'. Nicki Minaj's 'Starships' and Skrillex's 'Bangarang' re-enter the chart at 37 and 40 respectively.
Watch the video for Swedish House Mafia's 'Don't You Worry Child' below:
Source: Official Charts Company
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