Raging Speedhorn were formed in 1998 from the merging of the bands Soulcellar and Box. Through a 'frightening' stage presence and minor re-working of riffs reminiscent of Iron Monkey, the band quickly established itself as a major presence within the UK's metal scene.

Raging Speedhorn features two vocalists, a style largely inspired by the UK hardcore band Hard To Swallow, (which featured Bloody Kev who would join Raging Speedhorn as their second vocalist after the departure of Frank Regan in 2005). The band's first single, "Thumper" (produced by industrial veteran, Marc Heal) was released in 2000 to significant critical acclaim. In 2001 they charted in the UK Singles Chart with The Gush. They toured relentlessly over the following years supporting bands such as Will Haven, Amen, Biohazard, Ministry, Slipknot and Rammstein. They toured across the UK, Europe, Japan and the USA and appeared at many festivals including playing the main stage at Ozzfest, Reading, Damnation and Download on 3 occasions.

On early Raging Speedhorn recordings the music can be characterised by pounding basslines, heavily distorted riff-thick guitarwork and subject content consisting generally (but certainly not exclusively) of hedonism, drug-use, violence, antipathy for major band labels and depression.

The band originally broke up in 2008, but on 18 February 2014 it was announced that the band would reform to perform at Damnation Festival in November 2014. Both John Loughlin and Frank Regan would feature on vocals, with the band showcasing tracks from their first 2 albums. Replacing original guitarist Gareth Smith would be long time friend of the band James Palmer (Murder One, Charger). On 3 July 2014, the band played a sold-out hometown show as a warm-up prior to headlining the Jagermeister stage at Sonisphere 2014. On 7 July 2014, an eleven-date UK tour was announced.