High Quality Content by WIKIPEDIA articles! The UK Albums Chart is a weekly record chart based on album sales from Sunday to Saturday in the United Kingdom; as of 3 March 2012 (2012-03-03), there have been 61 number-one albums during the 2010s, by 51 artists. The Official Charts Company (OCC) defines an "album" as being a type of music release that feature more than four tracks and last longer than 25 minutes; sales of albums in the UK are recorded on behalf of the British music industry by the OCC and compiled weekly as the UK Albums Chart. The chart is based on both physical and digital album sales, and each week`s new number one is first announced every Sunday on The Radio 1 Chart Show, which is currently hosted by Reggie Yates. The album chart is published online by BBC Radio 1 (Top 40), in Music Week magazine (Top 75), on the OCC website (Top 100) and the full Top 200 is published exclusively in ChartsPlus. In June 2010, Time Flies... 1994–2009 by Oasis became the 900th album ever to top the UK Albums Chart.