Just curious: do the UK ones have the same exact ingredients that the US ones have?
The article says yes, it'll be the same recipe as the US ones.
I don't know if anyone else has tried this yet, but I've just had the opportunity to do a side-by-side comparison, and as far as I can tell there is certainly a perceptible difference.
As far as my subjective analysis goes, the British version of the Oreo has a cookie/biscuit part which is a little coarser in texture than the American, and certainly much more of a hint of the "Bourbon" flavor which was mentioned earlier in this thread. Also, the cream filling on the British version doesn't seem to be quite so sweet to me as the original.
Of course, it's always important to verify one's initial analysis, so I had to force myself to eat another two Oreos to be sure! (Purely for verification in the interests of science, you understand.
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).