The deputy manager of a pub where we were having a vaping meeting kicked us out after 1 hour, with all that it was the they had accepted the booking and that there had been another meeting there in February.
Imagine a big table covered in mods eliquids to trade and a few people tinkering with their rebuildable attys, quite a view

She said people complained about the smell (?), but in reality I think she simply needed the table and didn't have the guts to say that plainly.
(if you ever visit London, it's The Bunch of Grapes, In London Bridge. Big avoid, a well deserved 2 stars in Google)
We went to another pub which serve very alternative beer flavours (coconut and the like) and people and staff were ok with that and some very friendly and interested.
I think in the end there were 6 people or more trying, including a few non-smokers. halo midnight apple was a big favourite

Somebody at the meeting told me he vapes everywhere, includign buses. But he vapes in front of the driver when getting on the bus, so they see it's not a cigarette, rather than havign to explain after they spot the vapour and stop the bus in the middle of the road to kick you out.
Personally, I do puff here and there on trains and stations, but not too explicitly as there is always a chance to find some staff which will treat as you were smoking even on the face of evidence. And I tend and put it less than diplomatically when I feel I am bossed around unfairly, so I prefer not putting myself in the situation.
But just the other day some railway stuff spotted my vapour and asked me to stop smoking, "I am not smoking", "Oh, but you were, I saw you", "I still am, but it's not smoke, look.."
After a second she was asking me if I managed to stop smoking completely and how much it costs, as her sister didn't manage to quit with the patches.
So perhaps I should just vape away openly.
But she warned me that in central London her colleagues might be more aggressive and less inclined to listen (e.g. they might call the cops if you refuse stopping).
And I always avoid vaping at the playground where I bring my kid playing. Some parents could get pretty mental about it, I think
