Lock Up was joined by Peter Tägtgren (Hypocrisy) for its debut album, 1999's Pleasures Pave Sewers, and Tomas Lindberg (At the Gates, Disfear) for 2002's Hate Breeds Suffering and a Japanese tour.
The band was later joined by guitarist Anton Reisenegger (Pentagram Chile and Criminal) in place of the late Pintado.
Shane Embury was unable to make the shows so Danny Lilker from Nuclear Assault filled in on bass for the duration of the trek.
On 3 December 2010, Lock Up uploaded the first new piece of music in eight years, a track titled "Life of Devastation", to the band's official MySpace page.
This time Kevin Sharp (Brutal Truth, Venomous Concept) handled the vocals.