- Custard Creams
- Bramley apple turnovers
- Sausage rolls
- Walkers crisps
- Magnum ice cream bars
- Breakfast cereals
- Pork pies
- Pizza (Domino's is my favourite big chain, but there is a local chain that do a decent 12 inch pizza for a lot cheaper)
- McDonald's double cheeseburgers
- McDonald's double sausage and egg McMuffin
- Doughnuts
- Cakes in general, but Mr Kipling's slices are very binge worthy
- Dairy Milk chocolate
- Full fat milk
- Cheese of most varieties
All just off the top of my head.
B) Domino's and McDonald's are not British foods but sausage rolls and pork pies are. Even the American chain food will taste different in the UK vs. the US.
Sometimes it's more about the person and less about the food.
For example, I know some people who simply can't stand to feel even a tiny bit hungry.