They wouldn't add anything

It would most likely be sold just the same as tobacco...

Grown professionally in factories or something and then sold in packets like cigs but as spliffs or just in a big bag like when they sell rolling tobacco where you can choose how much you want.

imagine that buying an oz of skunk for £5 and then putting it into one big joint lol

The goverment dont realise how much MONEY they would make if they actually made it legal i really dont see why or how they think it could cause any problems??