I grew up in Oxfordshire and then lived in Northampton for ten years.
I really, really struggled to make friends in N'ton, and there is certainly still a much stronger 'born and bred' mentality than I experienced anywhere else: lots of archaic civic and county roles that exist simply to offer the wealthy dynastic families a chance to show off.
It is true that there is a good art house cinema. There is also a good theatre, but I found it tended not to programme anything too interesting: lots of 'tribute acts' and 'sing alongs' but not much else. The stage is too small for live ballet or opera, for example. They do also have a few classical concerts, and te ROyal Philharmonic Orchestra has a residency in Northampton. However, for them it is just a chance to hit their 'outreach' credentials, so it tends not to be their main players/conductors or the more exciting programmes.
The villages are beautiful, it is true - although I was staggered recently when I saw the honey-stoned villages in Oxfordshire again.
I don't know much about schools in N'ton, but it seemed as though there were a couple of much-sought after [single sex] schools, and the other schools seemed to trail in their wake slightly.
I regret spending as long there as I did: it cost me my marriage and my sense of who I was and what I wanted.
But each to their own. My experience is just my own.