Lists of UK Rock & Metal Singles and Albums Charts number ones

The UK Rock & Metal Singles Chart and UK Rock & Metal Albums Chart are record charts compiled in the United Kingdom by the Official Charts Company (OCC) to determine the 40 most popular singles and albums in the rock and heavy metal genres. The two charts are compiled by the OCC from digital downloads, physical record sales and audio streams in UK retail outlets. The charts have been published on the official OCC website since 1994. Previously, the UK Rock Singles chart, sometimes called the Metal Singles chart, that was compiled by CIN, which later became OCC, was published in Hit Music from September 1992 intermittently to February 1997 and interchangeably with the Rock and Metal Albums chart (which was sometimes under the title of Rock and Metal Singles chart) and also with the Indie Chart.