Have I blogged this before? Vaguely remember doing so but can't find it.
Anyway here is a the published version of research in Sheffield which looked at the likely effect of different pricing policies for alcohol, including a minimum price of 45p, 50p or 70p plus variations. Note that this research was funded by the Policy Research programme of the Department of Health which means it must have gone straight to the decision makers (although the Prime Minister dismissed minimum pricing without a second thought when it was first mooted by his own Chief Medical Officer).
This is modelling work, so we need to pay close attention to the base data - for example, the original studies which show that increasing price reduces consumption. How solid is that evidence? Much of it is in the webappendix.