From what I understand is it will only be in public places (not privately owned businesses) however the new law will require every restaurant to have a designated smoking and non-smoking area, that also applies to bars, so I would think that most bars will make the whole bar smoke free, that way they wouldn't have to put up another room and bar....
maybe?
If that is the case then LHR would be fine, they have a non-smoking sectionand a smoking section.