Slade

Slade are an English rock band. The British Hit Singles & Albums stated they were the top UK group of the 1970s. They were the first act to have three singles enter at #1, and all six of the Wolverhampton band's chart-topping stompers were penned by Noddy Holder and Jim Lea. Total UK sales were 6,520,171, and their best selling single, "Merry Xmas Everybody", sold more than 1 million copies worldwide.

The Illustrated Encyclopedia of Music commented that with Holder's powerful vocals and guitarist Dave Hill's equally arresting dress sense, Slade were one of the most successful British chart bands of the 1970s, scoring seventeen consecutive Top 20 hits. They are well known for the deliberate misspelling of their song titles, and for the song "Merry Xmas Everybody" (first released in December 1973), now one of the most iconic Christmas pop songs in the United Kingdom.

From Wikipedia