Could be, only go into M&S now and again but noticed shelves not as full and smaller choice,EU legislations stricker than UK's might have something to do with it!
I sometimes notice a slight shortage in one or two items like 3 years ago there was a shortage of lettuce for a week but the constant Guardian scare stories are just bollocks. The start of Covid - there were shortages, no fruit, veg, chicken, bread, eggs, milk, rice, pasta, soap. It was crazy but you could still fill your trolley with food: cans, frozen.
Lettuce hope so.... I know, I know... it's a ****ing cabbage ... but that wouldn't have worked ... rather like Simon