If you put barb wire up by all accounts you have to notify the landlord and the police in case someone hurts themselves getting into your property (which is surely the whole point
by bipolar
stick some barb wired round the fence it's high enough so the boys wont hurt themselves
The same applies to a tar substance you can put on the tops of garden walls which was something we were trying to persuade Dad to do at his HA house because of all the kids in the cul-de-sac climbing on top of his walls
So he didn't want the hassle trying to get it approved.