13:00Radio 1 Breakfast with Greg JamesTuesday: Chris Moyles sits in for GregBBC Radio 1 Duration: 3 hours Tue 20th Mar 2012, 13:00 on BBC Radio 1 N. IrelandChris Moyles does a double shift to sit in for Greg James. Show more GenresMusicPop & ChartEntertainmentBrandRadio 1 Breakfast with Greg James Source: BBC Online