Tuck box police?

OK, too much junk food is bad for kids, but just how far should official policy go in discouraging it? Apparently plans are afoot here in the Midlands to give Heads of schools authority to ban sweets and crisps from school lunch boxes and to remove the temptation to go down the local chippie by preventing students from leaving the school premises at lunchtime. Methinks this goes too far. I would certainly be incensed as a parent if the contents of my child's lunch box was being censored. And what's going to happen anyway? If they're that way inclined, they're going to fill up with crisps and sweets when they get home, aren't they? And what's he matter with the odd bag of crisps anyway? Things have come to a pretty pass when you can't give your kids the occasional treat. It seems to be one of those things where the many are being punished for the sins of the few.