Yes, shopping can be a downfall! In many ways, it's good that I live in Exmouth because the shopping is lousy here (for clothes, housewares, etc). But I'm a foodie so love all the farm shops and specialty food shops in the Devon area.
Exeter is my closest shopping so I try to avoid it as much as possible!
You do get used to a certain way of life but you just have to accept that so many things will change when you get here and make the best of it!
On a slightly related note, one of the reasons we are having such a hard time financially is because my DF owes for his UK student loans from his MSc and the UK banks don't let you defer if you go back to school (he's now doing a PhD). So if any of you have partners with UK student loans, be aware of that!