Never ceases to amaze me how when you are in a crowded room/bar and you accidentally stand on somebody's foot or bang into them, that they will apologise to you. It's sooooo British.
Contrast that to when I was in Ibiza years ago and in the clubs, the Spanish and Italian lads not only don't apologise for bumping into you, they will forcibly push you out of the way to get past. How more fights didn't break out as a result of this I'll never know.