All these things that I have done

The sandwiches would work but (a) there are only 2 that aren't horribly soggy and (b) I like hot food in winter. The jacket potato is what I generally go for, but once you've added tuna mayo (I can't stand baked beans) you're around 500 cals. If there's a pasta meal on the menu then I'll often go for that but in general the hot food choices aren't that appealing and have started to be served in dishes, rather like when you order a pie in a pub, which makes portion control tricky.