There are international treaties preventing the UK from "Legalising" cannabis.

However a de-criminalised approach would probably be best - like in the Netherlands.

I just got back from Amsterdam and I must admit that smoking a pure rolled 2 gram joint in front of the police was most entertaining.

But seriously, it would disenfranchise a large segment of the black market in the UK. Money which currently funds prostitution, further organised crime and guess what....

terrorism (I hope Tony Blair reads this )

But we don't have a government that seems interested in that right now