The Official UK R&B Chart (also known as the Top 40 RnB Singles and the Top 40 RnB Albums, or simply the UK Urban Chart) is a forty-position R&B/Hip-Hop chart compiled by the Official Charts Company. Although the chart does not receive any airplay, its compilation is viewed on BBC Radio 1's website and publications such as ChartsPlus and Music Week. The UK R&B chart is also shown regularly on music channels including Kiss, Viva UK, MTV Base and MTV Hits. Additionally the channels regularly use The Official UK R&B Download Chart, which is shown on 4Music. An albums chart is also compiled and shown on the BBC Radio 1 website. Criteria for inclusion in the chart is unclear, since it does not necessarily rely upon the positions of R&B and hip-hop songs on the UK Singles Chart.