Eh, I will sometimes make a big batch of sauce and then either keep in the fridge a few days or freeze it. But that's besides the point. I can still make a pasta Bolognese in about an hour if I'm trying to make a quick but tasty weekday meal, since you don't actually HAVE to simmer it for hours.

Like to take a beef wellington for example, you can't really cut corners on it and make one on Wednesday night after work. Even if you were to buy a pre made one, you would still have to roast it for ages.

And even then a lot of Italian cooking is legitimately quick, even doing it "properly" a carbonara for example is super quick and easy to make from scratch, if you just buy the bread instead of making it Bruschetta is super easy, or if I'm feeling super lazy I will sometimes make a frittata with leftovers, that takes like 15 mins to make. In the other hand no one quickly throws together a chicken and leek pie, or make a pasty from scratch, or even something as relatively simple as a roast. The only British food I ever really make for easy meals is a stew because you can make it in a slow cooker, but stew isn't even a uniquely British dish.