That must have been bad Kaz. If your neighbor has only been away for one day there must be the suspicion that someone must have known of their absence, that it is someone close.
Os, the incident happened on an estate around the back of the pub at the top end of the village. I wouldn't even know how to get there so it suggests some local knowledge.
CCTV sounds OK but lots of people in the village have it and it hasn't put these people off. Because it is always mounted quite high up you never get a shot of their face.
We have a locking gate to the side of the house. No alarm system though we do have an old alarm box on the outside of the house. The side door has an improved lock from the old euro 5 we used to have. If these people are turning up with machetes and pick and handles it might have to be something that tops those implements.
Nobody wants to use massive force on anyone, but what do you do? The police can't be everywhere, you aren't allowed to own a taser and these low lives are turning up three at a time.