PM me and I'll write instructions on how to prepare a rabbit
, The sign you referred to in the OP is both out of date and a symptom of bad land management. It is intimidating, offensive and useless for purpose. If there is a problem of trespass (damage being done to private property by access) or illegal killing of wildlife then the notice should be asking the law abiding majority to help identify those responsible and giving contact details.
Unnecessary privacy notices are counter productive to the cooperation that should be encouraged in the countryside between visitor and occupier to counter bad behaviour and bear witness to criminal acts.
I think all walkers should be encouraged to carry stick on 'Question Marks' to peel and stick to these notices, all that is necessary in most case is to make the the way marks more visible so that the actual way is clearer and if there are signs that the way is being varied then the occupiers should ask themselves
WHY. Here the sign seems to intimidate against access to useful green space, is it necessary?
Elsewhere I have tried to show, where obvious variations of way could make a routes safer.
I congratulate you on bringing this example to the attention of the forum. It has shown that the
idiocy of petty squiredom extends into the bureaucracy of local government.