Sure, you may be used to being directly asked this by a dude in Canada but over here? You see, here in the UK/ Scotland, there is a lot more happening than what would appear on the surface.
Obviously if you're a patron at a busy pub in the UK, you can't wave your hands or make a point of being FORTH RIGHT and saying that you're next; SORRY, that's just the rules, Yanks.
What can I say, they like rigid social codes over here.
As a Canadian dating in Scotland, I initially found it quite difficult as there isn't the same culture/ tradition of dating as there is in North America.
Back in Toronto, it wasn't considered strange/ too forward for a guy to approach you and either: (a) just start talking to you SOBER and/or (b) offer to buy you a drink.
I get a surprising amount of emails from women - mainly American and Canadian - about dating Scottish men: e.g. North American dude; what does it mean when a Scottish guy asks them out for a drink with all his friends and so on and so forth.