I have bivvied in a Sussex wood I later discovered was used for shooting parties. Someone who knows more about such things than me reassured me that it would have been outside the hunting season. Tips for avoiding such places in season (still have to figure out when) much appreciated.
No tips, other than to be aware of the official hunting season (and unofficial if one exists!) wherever you are.
Reminds me of a couple of winters ago, on the spur of the moment I headed off for a weekend on the bike. Checked out a campsite that would be open and headed off. Google Maps (like I said, it was spur of the moment!) was fine for most of the 50 odd km but near the end brought me into a forest and got me totally lost going down ever smaller paths. Pitch dark, snow on the ground I had no idea how to get to where I wanted to go. I followed my tracks back to the road and tried to ride around the forest, rather than through it. Thought I was getting closer, but still had to go back into the forest. Same story. Deep in the forest and lost again! Well, not lost - just there was no way to get where I wanted to go!
Looked around and thought that actually, it wasn't such a bad place for a camp!
Was just getting ready to unpack when I realised I didn't have enough water with me to cook, so I took off out of the forest again, got on the road and took a long & winding road to the campsite.
I was kicking myself for my 2 errors - using Google Maps and not bringing enough water, until the next morning when I cycled back through the forest..... a rather large part of it was used for training by the Dutch army - and some of the places I had cycled through were off limits - but in the dark I had missed the signs!
I live close to the Belgian border and there are some great spots for wild camping which would make great overnight trips, but apart from hunting, the issue is criminal activity - mainly the dumping of chemicals used to make synthetic drugs. Some nasty people wandering around these places at night.
Maybe it's the local knowledge bias that scares me off using those areas, but if I was a stranger cycling through these areas, I'd be spoilt for choice to camp.