Any property owner or occupier has a duty of care to anyone that may enter/come on to said property, regardless of that individuals intentions, proven or otherwise. There will never be an exhaustive list, as every case is different. An example of where you may fall foul as the owner/occupier, is using anti-climb paint and failing to erect warning signs or using it at such a low height as to bring it into contact with someone who hasn't climbed/scaled the obstacle.