Violent Crime Reduction Bill

I am trying to understand the place of local authorities in the strategy that is being put forward. There is an oddity in the Bill that I cannot explain, but I hope that the Home Secretary will have an explanation for it. In relation to the drinking banning orders, clause 11 gives a role to county councils but not to district councils where a county council exists. However, it is the other way round in clause 17, which deals with alcohol disorder zones. I fail to understand the purpose of that distinction.