Just to help out my fellow Brits there are now two stores that I know of that sell a selection of food brands from uk.
1st is
candy bags sweet shop
4a 6791 gaetz ave
red deer
ab
they sell more than just sweets. If you request something they will try to order it in for you.
2nd is
I.D.A 3757 43 ave
red deer
ab
this is a pharmacy but they have two isles in the middle of the store with all kinds of treasures. Check it out.
hope you find something you want.
scott