This book lists every record that reached the top 100 of the singles chart and the top 100 of the albums chart of the United Kingdom between 3 January 2015 and 31 December 2015. The charts are (c) The Official UK Charts Company Limited and taken from http: //www.officialcharts.com. During 2015, the dating of the charts changed. They were dated the Saturday of each week and published on Sunday, 6 days before. They are now dated the Thursday of each week and the charts are published on Friday, 6 days before. The chart dated Saturday 4 July was followed by the chart dated Thursday 9 July