You're spot on there Hazel. It isnt actually the 'shopping' as such that you miss - its the familiarity of those shops - knowing what things are, the quality, which makes are good makes etc etc etc. Its exactly the same with groceries too - food has different names, they dont do lots of things here that they do in the UK - the selection is far less (very minimal actually).
I hope you dont miss anything when you get here lilllymist but my guess is that you will.........and it'll be silly things that you just didnt think were important to you before. You might miss the culture, the history, the people, the clothes, the food, the variety of grcoeries but most of all you'll miss FAMILIARITY!
Good luck though
Rach xxxx