From the Guardian website:
"The Home Office said that one of the main elements of the psychoactive substances bill would be a ban on the trade in "any substance intended for human consumption that is capable of producing a psychoactive effect", with a maximum seven-year prison sentence to back up the ban.
But it quickly added that "substances such as alcohol, tobacco, caffeine, food and medicinal products would be excluded from the scope of the offence".
Basically this bill is being introduced to ban "legal highs", something like the Federal Analog Act in the US. I'm going to write a really, really, really tl bit about this whole thing, but for the moment I'll just sit and sadly shake my head.