Let's assume there are about 10 million smokers (poss more or less), they smoke 20 fags a day @ roughly �4.50 a pack....about �4.00 goes to the government in duty, that makes about �14.6 billion pounds a year...so then pays for a couple of Iraqi wars, 70 hospitals etc..........
But, hospitial funding should go down if everyone stopped smoking. Not immediately, admittedly, but a large portion of the NHS's budget is attributable to treating smoking-related ailments.