If its happened more than once then its a clear sign that the guys who did it the first time took themselves out of the spotlight just to do it again a few months later. Getting robbed is always scary when the police don't catch the people that did it because then you're left wondering what would happen if your family was at home and the assailants were armed. I hope they catch the people who did it and he gets his things back and more importantly it never happens again.
Just out of curiosity, is it hard to get a house with better security installations in Liverpool?