Horsepower Productions are truly unique, credited along side El-B and the Ghost collective for the creation of dubstep. Originally a collective that featured No U-Turn stalwarts Nassis and Lev Jnr, more recent output as been the work of just Benny Ill, joined on the 2009 comeback single 'Kingstep' by newcomer Jay King, and by Nassis and Lev Jnr once more on the 2010 album 'Quest For The Sonic Bounty'. All born and bred Londoners - the roots of Horsepower"s sound is as culturally diverse as the city"s inhabitant…