Biography
1) Irritant are a post-punk / metal band from Gloucester, UK, formed in 2004 and consisting [originally] of:
Niall Thomas, one of the frontmen for the band, on vocals and bass guitar
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Will J. Rees, another of the frontmen for Irritant. He plays lead guitar. He also owns a Gibson SG, which he uses for solos in live performances.
Jack Williams plays rhythm guitar, acoustic guitar and is the backing vocalist for most of the songs.
Pete Bright is the former drummer of Irritant. He left in mid-2007, citing creative differences.
2) Irritant is a polish DnB DJ.
3) Irritant is one of many aliases of the British industrial noise duo The Grey Wolves (Dave Padbury and Trevor Ward).
Biography text from Last.fm, available under CC BY-SA.