Most drugs. Class A's maybe not, but certainly weed and mushrooms and similar.

Legalise them, sell them in shops and tax the shit out of them.

My main gripe is the fact that Alcohol, Tobacco and even caffeine to an extent have far worse long term effects and cause far more problems in society than low risk illegal drugs ever have.

You can't have some drugs legal that kill people, yet have other less harmful drugs illegal simply because of tradition.