Hen Harrier Protection Legislation Getting Claws?

News that a gamekeeper working for a Scottish grouse moor is to be imprisoned for trapping and battering to death a protected Hen harrier is an interesting development (http://www.theguardian.com/uk-news/2015/jan/16/grouse-shooting-future-hen-harriers). Prior to this case, offenders (including poisoners) have mainly been restricted to fines and warnings. The case has raised debate about whether a) the activities of gamekeepers should be monitored using CCTV and b) the estate owners can be held to be liable for the actions of their employees. The employee has reportedly lost his job and been expelled by his association.