Comment by jon-wood
10 hours ago
It varies, culturally and based on what the group is. In the UK if I'm out for a meal with family or close friends then one of us will probably pay the bill and then people will offer to transfer their share to the person who did (which may or may not be refused depending on circumstances), if I'm out with colleagues or a group of looser acquaintances then its more likely we'll each pay our share separately, which the server is generally happy to accommodate.
In college I used to go out to eat from time to time with a group of friends to a midnight pancake house.
This was a very nerdy group! In our "culture," everyone wrote down on their paper placemat the exact cost of each item ordered, and at the end of the meal calculated the exact amount of tax plus the canonical 15% tip, and put the correct amount on the table, making change as necessary.
It was pretty fast and frictionless!