Mexican food is big over here now, any ASDA or big store will have Old El Paso kits,seasoning, tortilla, even ALDI has own brand stuff for very little,(PS, the hot salsa from Aldi is really nice, just the right amount of heat)
B&M has microwave popcorn, but you do have to add butter if you want American style.
I haven't seen pumkin spice but then again, I have not looked for any.
Now if I could just find some grape jelly in a store......