Personally I quite enjoy having a cigarette when after I've gotten completely drunk. It looks cool too. I know it's bad for me, but I probably only smoke 1-2 cigarettes a week. It's no worse than wandering around an average smoggy British city.
I am not a 5-year old, I don't need this authoritarian British government telling me I can't harm my own health. And don't give me that crap about the NHS has to pay for it - smokers have already paid their for their own treatment many times over thanks to the taxes levied on ciggies.
I noticed with interest that in New York, where they banned smoking in bars, that it caused sales at pubs and bars to be reduced massively. Some bars were having lock-ins to allow smokers to exercise their civil liberties. And don't give me any crap about non-smokers' civil liberties - even in Britain there are loads of non-smoking bars, and practically every pub has a non-smoking section. What's that? You want to drink in a smoking-only pub? Or you want to sit in the smoking section? That's as ridiculous as saying you want to have a picnic on the M6. Grow up you woolie liberals and stop trying to foist your perfect ways on the rest of us.