raids, police seize drugs valued at almost half a million pounds. the serious and organised crime groups to make sure that they ply their trade, there s also associated violence in and around the areas between different and rival gangs. so this is another reason why we re trying to protect the public and keep them safe, and especially the vulnerable people that these organised crime groups prey on. national law enforcement chiefs say that albanian gangs have become involved in what they describe as an explosion in cannabis production around the country. and the gangs are now drawing on the growing number of migrant arrivals. in some cases, the cannabis farms are being run with forced labour. young albanians, many who have come across the channel, can be in hock to the gangs. the criminals are demanding payback for funding their passage to the uk. this is a system of debt bondage. on the phone from an immigration removal centre, one man in his 20s spoke to us.