I was about 6 years ago.I shot on there for 5years and it Wasn't too Bad and you just Dropped a text when you wanted to go out.
Also was a Few rabbits around too just watch out for horse riders as they also have permission to go about.
PX had one piece of land where no one went On it was just a small plot on the side of the a14.
I used to shoot a massive number of pigeons on that plot it was my favourite field.Eventually it got sold to development I Feel like crying everytime I drive past it 😥.