Mick John Harris played drums in Birmingham's grindcore legend Napalm Death. They started out in 1981 or 1982, releasing their debut album "Scum" in 1986.
Mick Harris was Napalm Death's second drummer. He joined after one of the founding members "Rat" (real name: Miles Ratledge), got out in November, 1985. Mick's first gig with the band was on the 18th of January, 1986, opening for Amebix. He played in the side A of Scum and was the sole survivor that got to record the B side! He remained in the band through many line-up changes and finally left in 1991 just after the tour for Harmony Corruption ended, because, as Mitch has told me: "He wanted to slow things down. No more fast stuff!". Harris was replaced by Danny Herrera.
Mick also played drums for Doom and crustcore extremists Extreme Noise Terror while in Napalm Death. Reportedly, Doom was less Discharge-like and had more of a Celtic Frost/crossover feel to it (this was before the band signed with Peaceville records).
Also, while he was in Napalm Death, Mick had a side project with Mitch Harris called Defecation, with whom he released one record, 'Purity Dilution', through Nuclear Blast records. A second Defecation album was written, but Earache forbid our heroes to release it (since it was being released through Nuclear Blast), so it was shelved.
After leaving Napalm Death in 1991 Harris joined the band's original bassist/lead singer Nik Bullen, and founded Scorn, another industrial project. Scorn released several albuns and EP's, being quite succesfull. However, Mick Harris does not play drums on any of them; the releases feature drum machines only.
Due to personal problems, Nik got out of Scorn in 1995. Mick kept recording and playing under the Scorn moniker, but the band finally broke up in 1997. He has thousands of other side projects (Lull, Painkiller, things with Jimmy Plotkin, Justin Broadrick and Bill Laswell).
Later Mick reformed Scorn and planned to release Scorn7 on the near future.