Never been to Liverpool but just spending a few days in Yorkshire & we have been saying similar things ,have done a lot of walking & everyone has acknowledged one another & stopped to chat so different to South London & even Lincolnshire where we now live.
Me and my wife and kids spent 1995 to 1998 living in the Yorkshire Dales. That is not friendliness , it's F**King noseyness. They want to know all your business. So they can make judgements and talk about you with their real friends. Me and the wife used to play a game where one of us would tell someone something in confidence, and see how long it took to get back to the other. Like "We can't afford a new car, so I suggested to my wife that she gets a job" would come back to her three days later with "Have you found a job yet?" and she'd say "Am I looking for a job ? That's news to me" and three days later it would get back to me as "So you won't be getting a new car then?" And I'd say "We'll just have to stop eating meat and save up" and then the lady in the shop would say "Oh are you treating yourselves this week?" when we bought some sausages... rather rude I call it.
Yes, that is, I believe, in areas of the North were "the Family" is still important, and that Family feeling extends across the local community. It is them actually caring, and in a way taking you in to their local community. That is what good families do, and it is rather lovely. Something we in the South have lost in the main, with everyone (Generalising here!) indifferent and rather uncaring in a self centred society.
Give me the attitudes of the North anyday, even if people appear to be "nosing" into your business a bit too much. At least they care.