Good luck.... which part of UK you in? Coz in England from july you can't smoke in pubs/ or any enclosed public space. It already in Ireland/Scotland/Wales
I tell you it deffo effectin the pubs near me.
Think people just buy cans and take them home to smoke n drink infront of their kids (good move government

)
there used to be old fashioned smoking rooms in UK pubs - why not introduce them, keeps businesses going; protects kids; and public can choose if they wanna go in them - so its an adult decision if you want 2nd hand smoke...
Hope it works out for you, My mate's mum uses a plastic pen type thing with nicotine capsules - my mate tried it (she smokes) n was choking on the stuff. But it helps her mum, she reduced smoking loads.