16:00The Official Chart on Radio 1 with Jack Saunders21/08/2015BBC Radio 1 Duration: 1 hour, 45 minutes Fri 21st Aug 2015, 16:00 on BBC Radio 1 EnglandGreg James counts down to the UK's new Official No 1. Find out if it will be Charlie Puth and Meghan Trainor, Jess Glynne or perhaps Calvin Harris.GenresMusicPop & ChartBrandThe Official Chart on Radio 1 with Jack Saunders Source: BBC Online