My wife and I were tesco yesterday and I heard 2 girls about 14 years old debating in whose bag they were going to put some wraps they intended to steal.

I wanted to grass to the security guard and my wife said it's not your job, nor business.

Personally, I don't prescribe to this and wish I had said something, but we were in a rush.

I have seen homeless people steal from sandwiches before from these tesco expresses before but felt sorry for them so have done nothing.

But, yesterday was different, and I feel I should have spoken up.

What would you have done?