The Extradition (Drug Trafficking) Order 1991

2.  The Parties shall endeavour:

(a) To monitor the movement of goods and persons in free trade zones and free ports, and, to that end, shall empower the competent authorities to search cargoes and incoming and outgoing vessels, including pleasure craft and fishing vessels, as well as aircraft and vehicles and, when appropriate, to search crew members, passengers and their baggage;

(b) To establish and maintain a system to detect consignments suspected of containing narcotic drugs, psychotropic substances and substances in Table I and Table II passing into or out of free trade zones and free ports;

(c) To establish and maintain surveillance systems in harbour and dock areas and at airports and border control points in free trade zones and free ports.