CHECK IT OUT. We went to McDonald's at King's Cross Station, because we just didn't feel like experimenting with UK food the first day. So we stuck with something we knew.
Now that's not as safe a move as you might think...even things that you know and recognize can taste different outside the US. Pepperoni on pizza tastes pretty weird. A Big Mac doesn't taste quite the same. Even Old Reliable, Coca-Cola, doesn't taste like Coke. That's madness! So even when you're trying not to be exotic, it might still work out that way.
But here we struck gold. McDonald's apple pies in London are not like their US equivalents...unless you mean their equivalents from 1978!!!!
OLD SCHOOL McDONALD'S APPLE PIES. That's right. The deep-fried, bubbly, hot, burning, crispy kind. The kind that actually did need that warning, "Caution: Filling is Hot", because you had to wait half an hour after you were done with your meal to start eating that thing, and even then it was still possible to burn off all your taste buds.
Needless to say we went back to McDonald's a few more times.