Where I live there are frequently people that come into pubs to sell things that were clearly stolen from the nearby Morrisons.

I’ve found blocks of cheese to be an extremely frequently stolen item.

Makes sense. Fairly easy to conceal, surprisingly expensive (depending on what you get, like £8-16 per kilo), doesn’t usually come with security tags like steaks often do, and there’s lots of potential buyers for cheese since it’s used in a lot of things and it’s bloody lovely.