I just popped into F&M (to get an Easter treat, not my weekly shop!) and while browsing around noticed they have a few US produts. They had a few Aunt Jemima and Betty Crocker mixes, a range of tex mex sauces, I forget the brand but it did say 'made in Texas' on the label, Tabasco Bloody Mary mix and a few other bits and bobs.
Prices weren't too bad. A big box of Aunt jemima Pancake Mix was £3.95.
Of course this might be old news but thought I'd mention it anyway.
Liz
ps they had some hard to find Thai and Indian stuff too.