There are probably bigger worries in the surveillance area already (smartphones etc). I’d be more concerned about their potential use for assassination. How heavy does a bomb have to be?
Assassination of whom? The result isn't exactly discreet, it's not going to be used locally to target inconvenient persons in the UK. If we're talking about conflicts, then I don't see how it's better or worse than a predator.
There are much easier methods to hide than a drone. They typically use vulnerable or compromised individuals with no paper trial back to the perputrators to do these sorts of assassinations.
