Off-licenses are always going to be cheaper than on-licenses due to sales volumes. Supermarkets etc can afford to make less on the volume of alcohol sold than on-licenses can. Raising excise tax 10% will drive people out of supervised on-license environment and encourage them to buy more off-license alcohol. Furthermore, a well run and vibrant bar/pub scene is good for society and it provides people with a social outlet whilst being relatively easy to police. Your policy should recognise this. I also feel that your questionnaire that led up to this policy was plainly quite biased and that you had pre-determined the outcome.