Generally speaking I'm against stealth taxes and pro regular taxes. I believe that revenue for a country should be raised primarily through income tax and inheritance tax and the other stealth taxes such as VAT, beer duty and fuel duty - the taxes that mainly affect the regular persons day to day spending - should be kept to a minimum. I don't think income tax and definitely not inheritance tax are big enough in the UK (but would only encourage increasing them if the stealth taxes were reduced). The spare bedroom tax is an abominably evil tax, but a spare house tax would be completely fair and would lead to greater mobility in the housing market. Sin taxes are themselves sins, and if you want to encourage people to spend less on vices then you should spend more time improving the quality of life for the poorest in society and less time inventing new ways to hurt their wallet - which ironically only leads to a further deteriorated mental health and greater chance of ending up on the vices. If the quality of life is good then the level of abuse goes down. I would bet my entire life savings that you will find a direct correlation between abuse of vices (alcohol, drugs, whatever) and the spending power of the person abusing it.
It comes down to mental health. It's very hard not to pick up the bottle when everything about your life is shit already. When you can't turn the heating on in the evening anymore because the energy cartels have increased utility bills by 5.5%. When you're isolated and alone because the cost of public transport is so great that you cannot afford to visit your friends or family. When you have to make the decision between feeding yourself for the day or heating yourself for the day. When you are in a constant state of stress worrying about money this and money that. Increasing the cost of alcohol isn't going to deter these people from drinking. They are trapped in a viscous cycle that's going ever downwards. Making it even worse for them isn't going to convince them to stop. They need the social and mental support to get them out of the cycle, and they need real prospects and purpose in life to keep them out.
Rather than making alcohol more expensive for the 99% of sensible consumers, it would be far better if money was invested into mental health, social support and education. That would see a very real and positive change in society.
As to the question of where the money could come from. How about the £167 billion waste of money called Trident. A nuclear submarine with a lifetime of 30 years (ohhhh, look at us, we have a nuke). Over £5 billion a year being wasted on a submarine that we're never going to use which could instead be used to help people. What's the most infuriating thing about that is that the NHS deficit is about £2 billion. Less than half a years spending on Trident would wipe that out. We have such a twisted sense of priorities when it comes to spending.