Shitmat is an English breakcore artist and mashup producer, one of several monikers used by Henry Collins. Shitmat became known in the early 2000s for releases on the Ad Noiseam and Planet Mu labels. He also set up his own label, Wrong Music and put on parties in Brighton. His 2012 project Mash Hits remixed every UK number one single from 1952 onwards. He then stopped the Shitmat project, restarting it again in 2016.