No.1 together for seven weeks earlier this year with their One Kiss collaboration, Calvin Harris and Dua Lipa are now in a fierce battle for radio airplay chart supremacy, with his Promises teaming with Sam Smith spending its fourth straight week at the summit while her Electricity pairing with Silk City zaps 7-2.

Promises continues to add plays, which are up 2.89% week-on-week from 5,918 to 6,819, but the track loses audience for the second week in a row, slipping ...