Speaking as an Aussie - and hence a resident of a country that is culturally pervaded by both US and UK culture, I would just point out that while we do have occasional American restaurants here, I've never encountered a British one.
On the other hand, we do have a lot of English style pubs.
I honestly think these two facts reflect the reality here. Whatever good food the British had - and they did have some nice ideas - has been so rapidly incorporated into Australian food (and I suspect American as well) that nobody really thinks of it as British anymore.
The same has occurred with a lot (not all) of the best American dishes, meaning the only stuff that most people see as explicitly American is the stuff that nobody wants to claim for their own - ie, McDonalds (-8
British beer is worth drinking, so the English style pubs do well enough.
Also, as an Aussie, I feel I must point out that vegemite is better than marmite - but I confess to saying that out of patriotism and nothing else. Having been forced to consume massive amounts of vegemite while at boarding school as a boy, followed by nearly as massive amounts while in the RAN, I can no longer stand to look at more than the tiniest amounts.
We've got the Outback restaurant chains here in the U.S.--wonder what the Aussies would think about that food. The Outbacks here in Colorado are always busy.
Speaking of the Outback, here's an article about the chain feeding a bunch of the troops in Afghanistan and Iraq.
http://www.freerepublic.com/focus/f-news/1182607/posts
Also, as an Aussie, I feel I must point out that vegemite is better than marmite - but I confess to saying that out of patriotism and nothing else.
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LOL, my mother will only claim Marmite in an act of patriotism as well!