Strider.
I don't think these cameras are particularly small or indeed difficult to see, and don't cover the whole area.
These guys (and gals) have been there for a while now and must know the location of the cameras. As I said earlier, If Nicola was on her own in making this up, why oh why did David put his arm round her and say to Joe "are you jealous" just as she had earlier told Joe he was going to do.
It was either Nicola telling the truth or David & nicola in a joint scheme.
But either way, David WAS in involved.
Sure she had a grudge against David, but then most of the camp did have. She simply said it to his face while the others did it behind his back. And having a grudge is not evidence that she has made this up - as you say, it wouldn't stand up in a court of law