16:00The Official Chart on Radio 1 with Jack SaundersMistaJam sits in for GregBBC Radio 1 Duration: 1 hour, 45 minutes Fri 5th Jan 2018, 16:00 on BBC Radio 1 EnglandMistaJam counts down to the UK's Official No.1.GenresMusicPop & ChartBrandThe Official Chart on Radio 1 with Jack Saunders Source: BBC Online