Which chart company is abbreviated OCC in the "Rein Me In" charts table?

OCC stands for the Official Charts Company in the “Rein Me In” charts table.

The Official Charts Company is the organisation responsible for compiling and publishing the United Kingdom’s official music charts. Its data covers major rankings including the UK Singles Chart and UK Albums Chart, using information from sales, downloads, streams and other approved measures.

In the “Rein Me In” table, the UK Singles entry is labelled “OCC,” distinguishing the British chart source from other organisations listed for other territories. Australia’s chart is credited to ARIA, Ireland’s to IRMA, and the United States’ major chart listings to Billboard.

The abbreviation can be confusing because “official” appears in many chart names and because the organisation is often branded simply as Official Charts. However, the canonical expanded name is Official Charts Company—not Original Chart Committee, Ontario Charts Company or Official Chart Council. The company was formerly known as the Official UK Charts Company before adopting its shorter current name.