crystal meth was cheap, caused a lot of violence and was "probably the most addictive drug".

Judge Phillips said crystal meth was cheap, caused a lot of violence and was "probably the most addictive drug".

"It is very cheap, you can get it not far from here for £20.

"That gives a four to five-hour high but the comedown is frightening, with symptoms including paranoia, stroke, heart problems, irritability and self-harm. It can lead to a lot of violence."

Crystal meth has often been taken by people who come into court, he said.

"I know it's being taken, because everyone on a drug order is tested, said District Judge Phillips.

"A lot of them don't know they are taking it - cocaine is cut with it, skunk is being cut with it, which may be in an attempt to hook people, as it is so addictive."

The drug was re-classified as Class A last month in a bid to prevent it taking off.