I live in the UK, one thing I'll say on this specifically, McDonalds here tastes like it's shit food that's too expensive. In Canada it tastes like shit, but it almost tastes like you're not being bent over the counter and having your pockets turned out.
There's definitely some cities here that have a massive selection of different take away places. London, the only thing I miss about London is the variety of different foods. If I get stoned and drunk and feel like Ghanaian at midnight, it's likely I'll be able to get it. Might be cold, but it'll turn up. I'm in Edinburgh now, and while there's definitely a growing selection of foods, it's still mostly variations of greasy white people food. Take away in the vast majority of medium to small cities is exactly like Canadian cities of similar size, Chinese delivery, 1 or 2 pizza shops almost certainly one will be Domino's, some Indian delivery, 3-10 chippies, and McDonald's, Burger King or both.