A number of the criminal gangs in the United Kingdom specialise in the importation, production and sale of illicit drugs. Of the 2,800 gangs identified within the United Kingdom it is estimated that 60% are involved in drugs. Amongst them are the Yardies, also known as Posses in America, who are generally associated with crack cocaine. In 2003, it was reported that Yardie drug gangs were present in 36 of the 43 police force areas in England and Wales. One of the more prominent were the Aggi Crew in Bristol.
