British drum and bass duo Sigma have topped the UK singles chart with the track Changing, featuring Paloma Faith.
It's the second number one for the pair - Cameron Edwards and Jo Lenzie - but the song is Faith's debut as a chart topper.
Professor Green featuring Tori Kelly were also new names in this week's top five with their single Lullaby which landed at number four.
Last week's number one - Blame by Calvin Harris featuring John Newman - slipped to number two.
In the album chart, Irish band The Script claimed a third UK number one album with the record No Sound Without Silence.
Last week's number one - In the Lonely Hour by Sam Smith - slipped to three while Chris Brown's X debuted at number four.