19:00Christmas and New Year on Radio 1BBC Radio 1's Festive FestivalBBC Radio 1 Duration: 4 hours Mon 21st Dec 2009, 19:00 on BBC Radio 1 N. IrelandNick Grimshaw presents live music from The XX, Simian Mobile Disco, Mumford and Sons, Enter Shikari, Plan B and Marina and The Diamonds. Part of the BBC Christmas 2009 season.GenresMusicPop & ChartEntertainmentBrandChristmas and New Year on Radio 1 Source: BBC Online