Hip-hop star Wiley has scored his first number one single with Heatwave.
The London native beat Calvin Harris and Example's We'll Be Coming Back to steal the top spot with sales of 114,000, making it one of the biggest-selling singles of the year so far.
Florence + The Machine's Spectrum slipped to third place, while Payphone by Maroon 5 and Black Heart by Stooshe rounded off the new top five.
Meanwhile, teen sensation Conor Maynard has landed his first number one album with his debut release Contrast.
The Can't Say No hitmaker, 19, replaced rapper/singer Plan B at the top as Ill Manors fell to second place.