This is a bit funny in UK.
I am Polish and I have moved to UK 3 years ago. The problem with English food is that it's spoiled after 2 days in fridge.
Let's take carrots.
You can buy carrots in Polish shop or directly from Farmer - you can keep them in house month or even more.
Buy carrots in English Tesco or ASDA - you can throw them to the bin after 2 days.
It's same with bread, any vegetables or fruits and meat.
I'm still wondering what is the reason?