the deal that HE chose when HE came up with the plan to move north?
Things change though. He tried it out and its not working for him. I don't think there's anything outrageous about saying that.
People seem to be making a big deal of the three hour commute but honestly, 9/10 times that line from Kings X to Yorskshire runs great and is 3 hours of peace to drink coffee /read/ sleep / watch a film / work - its not like he's fighting round the M25 at 6am
Lots of people would hate this kind of lifestyle and being away from home a few nights a week, regardless of how 'peaceful' you think that journey is. Again, it's legitimate for him to say that he doesn't want to do it.
I don't think either party is necessarily in the right or wrong here, based on the limited knowledge we have. And anyway, it doesn't change the pertinent point, which is that they both want different things.
The OP is prepared to compromise on some levels, but not to the extent of moving away from her base. I can understand that too. However, fundamentally her husband wants the family to live within striking distance of London.
That conflict looks difficult to resolve.