Born as Martin Glover on 27 December 1960, Youth launched his musical career in 1979 when he joined the post-punk band Killing Joke. He left the band in 1982. In 1985, he played bass on Kate's song The Big Sky. Soon after he founded his own band Brilliant, which recorded one album in 1986 before later disbanding.
In 1989, Youth and Alex Paterson started the WAU! Mr. Modo label. They released industrial techno dubs and remixes.

In the early nineties, Youth formed techno and house music duo Blue Pearl together with American singer Durga McBroom. They scored a handful of hit singles including their hit single 'Naked in the Rain' and an album, 'Naked'.

Youth's Butterfly Records label has produced artists such as Take That, Wet Wet Wet, Tom Jones, The Orb, System 7, Maria McKee and Heather Nova. Youth was the co-producer of The Verve's Urban Hymns and Dolores O'Riordan's 'Are You Listening?'. He has also worked, produced and remixed for bands including Guns N' Roses, Primal Scream, Embrace, Siouxsie and the Banshees, Art of Noise, Crowded House, Zoe, P.M. Dawn, Erasure, U2, Bananarama, INXS, James, Depeche Mode, The Shamen, Texas, Dido, Pink Floyd and many others.

In 2008, Youth rejoined Killing Joke, playing bass in the band like he did at the start of his career.