@Thepo We like the city. Our commute will be slashed in half and our house will be much more comfortable. I’m of course expecting there to be slight differences
OK let's try and help you to answer your question about culture. Not all Northerners will agree with me here, we are not one big amorphous lump of people - but I do know many, many people will recognise some if not all of these points.
First, there are many different 'Norths'. We are not one big homogenous mass. Within that there is also considerable diversity of class, race, religion and ethnicity. The landscape is hugely varied too, and this also affects the culture of each area or region.
Second, the city of Manchester is not the North, and the culture of Manchester pretty much ends at the outer ring road. Greater Manchester encompasses lots of places, many of which don't consider themselves part of Manchester at all.
Third, as others have pointed out, if (and I'm sorry if I've got this wrong) you are moving to an affluent village in Cheshire, then this won't be particularly representative of the North, either. Many such places are now colonised by folks recreating 'the South'.
Fourth, in terms of 'culture', you will find that the North is generally more sociable, people are generally more direct and open, and this is reflected in the Northern sense of humour. Rightly or wrongly, Northerners often perceive Southerners to be humorless and selfish.
@Thepo but at the end of the day the North is still England
The thing is, from a Northern perspective, there are 'two Englands' - one in London/SE, and a culturally and geographically diverse 'England' beyond. And this social, political and economic divide is widening, mostly due to the actions of London/SE and its institutions.
So, I don't think people are having a dig at you personally, OP. We like people moving to and appreciating the North. But many - again, not all - of us are also fed up of two-State England and the patronising and insulting way the North is treated by London/SE.