Justin Edward Sullivan (born 8 April 1956, Jordans, Buckinghamshire) is an English singer and songwriter, born to Quaker parents. He is also the frontman and lyricist of the British rock band New Model Army, which he formed in 1980 together with drummer Robert Heaton and bassist Stuart Morrow in their hometown of Bradford, Yorkshire. In the early 1980s he performed under the stage name of "Slade the Leveller".