You know, I've had the British version of Quaker Oats Instant Oatmeal (Poridge), and I found it tasted nothing at all like thestuff from the USA.
As far as rye bread, I have never once seen it at Tescos or Waitrose.
I was buying the Chase & Snborn coffee off of ebay, but the guy selling it was from a US Army base in Germany and his prices were through the roof (I suspect he was pilfering it from the Officer's Mess).
Any other ideas?