I read only up to the point in which I had to pay to continue. Was the article only focusing on sandwiches? If so, is that the biggest food in common for lunch

I read only up to the point in which I had to pay to continue. Was the article only focusing on sandwiches? If so, is that the biggest food in common for lunches between the US and Great Britain? I tend to bring my lunch M-Th and get takeout on Friday. My takeout is almost always Thai. When I dine-in it's usually ramen. For them, I expect to pay $10-12. What are prices like for Thai or ramen in London?