16:00The Official Chart on Radio 1 with Jack SaundersKaty Perry, Kylie and Enrique on the Official ChartBBC Radio 1 Duration: 3 hours Sun 4th Jul 2010, 16:00 on BBC Radio 1 N. IrelandReggie Yates counts down the latest official Top 40 to reveal the UK's new Number 1 first, plus he catches up with Katy Perry, Kylie Minogue and Enrique Iglesias.GenresMusicPop & ChartExperimental & NewEntertainmentBrandThe Official Chart on Radio 1 with Jack Saunders Source: BBC Online