Going to ASDA and Sainsburys

[Scarybush]

Heya guys, I'm travelling up to the North of Ireland on Wednesday, for xmas gifts and food shopping (frozen) as its much cheaper up there and theres more offers.
Just wondering what things from Asda, Sainsburys, Iceland and so on am I allowed on Exante as I'm gonna do some bulk buying while I'm up there.. In prepration for the START in January

Thanks Guys and Dollz