Pizza, burgers, hot dogs and chips seem to be eaten pretty regularly. They were treat foods where I grew up - southern Mediterranean country. Treat foods as in twice a month or so.
'Cooked from scratch' is true in the case of stews or casseroles, but for example I don't consider a Sunday roast to be elaborate food. Maybe the gravy and at a push, meat and potatoes because you need to add the fat and all of that. Same goes for accompanying veg with other meals. Sticking some frozen broccoli and peas in boiling water, or cutting some parsnips and chucking them in the oven isn't cooking per se. It's preparing veg, nothing fancier than that.
From the outside, British food is seen as boring. Very traditional British food can definitely be a bit bland and I personally miss the variety of using different types of oil for example. Butter seems to go with everything. I cannot stand butter in a sandwich, it makes it all soggy. Where is the olive oil for taste? Veg, pasta, rice is always overcooked and very easy to chew. They never have texture. Not a lot of veg is eaten raw, it always seems to be cooked in some form.
However, when you actually spend some time in the UK and try a variety of foods, you discover it can be great. I love a good pub meal. Full English should not be allowed to exist, it's too delicious. What is great about the UK is how much international cuisine has been adopted into everyone's diets. Indian, Thai, Mexican, Chinese... There is so much variety.
What I cannot stand is when people say they're cooking a certain foreign dish that has nothing to do with the original recipe, and they insist on calling it by its proper name. No, paella doesn't have chorizo and peas in it! The word paella shouldn't be on the packaging. People add some strange things to their tacos. Long list of etceteras. I wouldn't call baked salmon and mash, fish and chips (slight exaggeration but you get the idea).
I personally find it funny how people seem to eat almost nothing all day long and then have huge, elaborate (except for the veg!), fatty dinners. There is kids food and adult food. We all eat together in my home country, no kids menus at restaurants. Everyone eats the same food, kids are capable of joining in and don't need mac and cheese or chips off their own menu.
There is lots of pudding involved and not enough salad and fruit. I might have taken too easily to this one, but I hope I can revert back to healthier habits before my kids start thinking so much sugar is normal 