In my own experience Sainsburys have taken the right and appropriate action.

I was at a very good school and I was brought-up to be under no illusions as to what was right and wrong, however, like many teenagers, I did rebel a little bit or I may have been a little naughtier when I was away from the authority of my mother or my teachers.

I know that not all kids are the same but so what if they can't go into Sainsburys. What do they need from there that they can't buy from somewhere else that isn't as far away from their schools? Maybe their parents could even save themselves a few quid by knocking-up a little lunch box. The world has gone poxywell mad!