Chart: Seizures of the most harmful drugs at UK borders are falling

Border Force is responsible for seizing drugs at ports, airports and international parcels depots. However, reports by the Chief Inspector of Borders and Immigration suggest drug-detection efforts are hindered by understaffing, lack of training and focus on conducting passport checks on travellers.

Chart: Drug use was falling, but that seems to be changing

Self-reported drug use has fallen for most of the past 20 years according to the Crime Survey for England and Wales, but in the past seven years the use of cannabis, cocaine and ecstasy has increased substantially, particularly among people aged 16–24.