DECEMBER 28th: Last night, Millward Brown discovered a bug in the weighting software used to compile the charts, which has affected a number of positions in the charts published on Sunday December 26. As a result, the OCC has decided to re-run all of this week’s Official Charts. In relation to the Top 40 Singles and Albums Charts, the errors are minimal. But if you wish to correct any charts which you publish online, or simply use the attached charts for reference purposes, please feel free.
Millward Brown is conducting a thorough review of the processes and systems in light of this error. OCC and Millward Brown apologise for any inconvenience caused.
