The group was initially composed of Benny Ill (born Ben Garner), Jay King, Lev Jnr, Nasis and four other members.
After a five-year hiatus, Garner returned to Horsepower with new collaborator Jay King, with a 12" single, "Kingstep/Damn It" in 2009 and an LP in November 2010 entitled Quest for the Sonic Bounty, both on Tempa.
[5][6] The duo's influence was acknowledged by the inclusion of several Horsepower Productions tracks on Tempa's 2006 Roots of Dubstep compilation.
[5] Music historian Simon Reynolds described Horsepower Productions as "pioneers" and their style as "sort of a minimalist move within UK garage almost bringing it more in line with techno aesthetic.
"[8] Belinda Rowse for Juno Daily, praised Quest for the Sonic Bounty, stating that it "reaffirms once again that Horsepower are one of the most important and genre defining acts of our generation.