Under the terms of NATO's operational plan for the International Security Assistance Force (ISAF), ISAF forces can provide, within means and capabilities, training and operational support to Afghan counter-narcotics efforts. But they are not there to take direct action against the drugs traffickers or to eradicate opium poppies in the fields. That is a job for the Afghan Government.
UK Armed Forces deployed in Helmand province have not detained any drug traffickers.
The UK, as Afghanistan's partner nation on counter-narcotics remains committed to supporting the Afghan Government in implementing their national drug control strategy. The arrest and prosecution of drug traffickers is conducted by Afghan drugs law enforcement agencies, the Counter Narcotics Criminal Justice Task Force and the Government of Afghanistan.