Slade are an English glam rock band. Slade were one of the most recognizable acts of the glam rock movement and were, at their peak, the most commercially popular band in the UK. They are well known for the deliberate misspelling of their song titles and for the song "Merry Xmas Everybody" (released December 1973), now one of the most iconic Christmas pop songs in the United Kingdom.
It has been said that Christopher Guest and Harry Shearer based their fictional band Spinal Tap, in the film This is Spinal Tap, on Slade. However, the comedians have since confirmed that the band in the film was based on the "tour diaries" of numerous UK "heavy metal" and "glam" bands. The events occurring to Spinal Tap in the film are based on the real exploits of not only Slade but also Deep Purple, Saxon, Led Zeppelin and Ozzy Osbourne.