I'm an American who has lived in the UK for a decade, and one thing I pine for is American breakfast sausage. I've even tried making it myself but just couldn't get the fat content right so it was all dry and wrong.
There is way more variety for breakfast in America, most places in the UK offer a variety of fry ups and maybe some pastries, porridge/oatmeal, fruit or cereal, but it is mostly fry ups. What exactly is in the fry up is regional, a local farmshop/restaurant here offers 2 sausages, 3 rashers bacon, 2 eggs, tomato, mushrooms, hogs pudding and sautéed potatoes - plus toast of course, with all the meat coming from their own animals. It is apparently wonderful but waaay too much food for me, and my husband is never able to get through it all.
I miss being able to get pancakes, waffles, breakfast sandwiches, omelettes, breakfast tacos and burritos, ham and eggs (which you can get here, but not at breakfast) french toast, biscuits and gravy, bagels...