Not living or going to London I have no idea what Khan is like for the city, if it's true he wants to set up a commision to look at drug use then that sounds good, but would be better if something was done after the commision met and made any recommendations.
I get confused and annoyed about all these commisions and reports costing sometimes millions, being done and then nothing comes of them. We're good at saying we'll do something, then giving some money to someone to do something, but for some reason that money and service rarely reaches the people who it was given for.
So good on Khan for trying...though it wouldn't surprise me to find out in ten years it was just all talk with no intention of action - but that's the politics we seem to love.