I think that is "Jackanory"
I was told it on a certain cycling forum by someone who is quite local, seemed to know his stuff, had freecamped there a bit himself and was I think the person who suggested my actual bivi spot.
Maybe false memory but as I checked out the forest for that kip I think I may actually have seen signs in a certain area cautioning about cameras. If there are, god knows where the control/security staff are/how many miles away - and are they really going to set off in the middle of the night with searchlights to bring you in?
But I stress - single night only, arrived late, left early, left no trace - was sleeping on the ground little different than any of the animals - apart from the fact that I made several espressos in the morning before moving on.