The
UK Albums Chart is a weekly
record chart based on album sales from Friday to Thursday in the United Kingdom (the chart week ran from Sunday to Saturday until 2015). It listed only
physical album sales until 2007, after which it has also included albums sold
digitally, and from March 2015, includes streamed tracks. The chart is currently compiled by the
Official Charts Company (OCC) on behalf of the UK music industry, and each week's new number one is first announced on Friday evenings (Sunday evenings until July 2015) by
BBC Radio 1 on
their weekly chart show.