There's not much point installing cameras
Friend of mine saw some lads in her garden one night, a couple of weeks ago, and she had them on CCTV. She went out, grabbed one of them, and started trying to force him out of her garden and he threatened her with the police She called the police, and when they arrived they told her she was at fault for tackling the lads
You aren't even allowed to force people off your own property these days..