Afghanistan supplies around 90% of Europe's heroin
The UK had the largest rate of heroin seizures and the third highest number of heroin addicts in Europe in 2004, the UN has warned.
It said increased production in Afghanistan, where most of the UK's supply came from, had not helped.

UN drugs watchdog the International Narcotics Control Board found the UK had Europe's highest amphetamine usage and the third highest for ecstasy.

Cocaine abuse in the UK had also risen despite stabilising in Europe, it said.
http://news.bbc.co.uk/1/hi/uk/4309729.stm