@Gunfighter:
I kind of mean both, since there's a definite difference.
@Outside Smoker:
Well, all the others are settler states besides the UK, with the possible exception of Ireland, which you could argue was more a conquered territory than a settled state (I guess America and Canada and other areas were conquered, too, but we think of them as settled outreaches of the British Empire, whereas Ireland was mostly, for lack of a better word, an occupation, and the UK/Ireland relationship's arguably the most acrimonious one between members of this club, historically and otherwise.)
And that's definitely true...
Toronto, New York, LA, Sydney and London would have more in common with each other than they'd have with Quebec City, Dallas, Atlanta, and...um...I don't know Australian cities well enough to speak to their socio-political differences besides maybe an East/West divide, and for fear of picking the wrong English city to throw in with that pack, I'll let an Englishman do that themselves.) ;)
But yeah, they're still all relatively-closely tied together culturally and historically and politically...and at least on average, citizens from one country can visit or move to another such country in the club and they'd be fine and probably relatively welcome...though that'll definitely vary (I know an Australian friend of a friend of mine that visited the US, and liked it alright, and got along fine...T.S. Eliot and Henry James moved from the US to UK, and Christopher Hitchens from the UK to US, and of course plenty of Canadians traverse the US/CAN border, and the same goes for Americans--Americans would probably be the most difficult to pin down, since they can either enter in well or be loud and obnoxious or be perceived as such, and then there are cosmopolitan US cities were diversity's celebrated, and then there are areas that are pretty xenophobic and might take issue with even fellow Anglosphere members.)