Jo

I had in mind those people who already shop in supermarkets. Just asking them to boycott Tesco.

You know how to stop Tesco and this greedy expansionism of theirs don't you? STOP SHOPPING IN THEIR STORES THAT'S HOW. The more people shop with them, the more profit they make, the more profit they make the more powerful they become, and the more powerful they become the more they proliferate. Vote with your feet. Go shop at another supermarket.