D1 is London based dubstep producer Dwayne Marsh. Son of 90s jungle producer Michael Anthony Marsh.
He first appeared on the Tempa's Allstars Vol. 2 with the track "Crack Bong" in 2004. As of 2008, he has released a series of singles and appeared on many compilations, including Rinse Recordings' 'I Love Dubstep'.