13:00Christmas and New Year on Radio 1Chart of the DecadeEpisode 4BBC Radio 1 Duration: 3 hours Thu 31st Dec 2009, 13:00 on BBC Radio 1 WalesRadio 1's countdown of the UK's Official Top 100 singles of the decade concludes as Nihal reveals the No 1 of the Noughties.GenresMusicPop & ChartEntertainmentBrandChristmas and New Year on Radio 1SeriesChristmas and New Year on Radio 1: Chart of the Decade Source: BBC Online