As alan 14 points out- any restrictions set by individual councils will give rise to 'post code boozing'
Such measures have to be nation wide.
But in so doing penalizes the average imbiber.
The way to effect proper control over self harm brought about by alcohol excess it to take from those needing remedial treatment the means to purchase the stuff
How?- by charging them a punitive price for such treatment.
This will of course bring a howl from the free Social Medical care lobby.
But they are looking at the problem in the wrong light.
If some individual was repeatedly treated for self cutting - the fist thing to do would be to remove access to 'sharps'
So it is with booze.