Their victims, aged between 11 and 15, were groomed and plied with alcohol and hard drugs before being sexually assaulted and forced into prostitution. Girls who were seen as "out of control" youngsters were deliberately targeted.
Abuse sessions would go on for days and involve the use of knives, meat cleavers and baseball bats. One was even forced to undergo an illegal abortion at a backstreet clinic when she fell pregnant by one of her tormentors.
Two sets of brothers, Akhtar Dogar, 32, and Anjum Dogar, 31, and Mohammed Karrar, 38, and Bassam Karrar, 33, were convicted along with Kamar Jamil, 27, Assad Hussain, 32, and Zeeshan Ahmed, 27.