I went out early today to do some flying, I was on my second battery and a van approached me on the football fields where I was standing. It was the country park ranger, he told me I'm not allowed to fly there. I was in the middle of 6 football pitches, hardily no one around as I was there early, these pitches are on the edge of about 500 acres of woodland which I was flying over, I kept will within LOS and was about 90m high in general. I asked why I'm not allowed and he seemed to make up excuses - he accused me of flying over people and a little cafe. I showed him my fight path and video to prove this was not the case. He then said it's got a camera "you can't fly because of that". So I asked if I could fly it if I took it off, he said no. I said OK - please can you let me know where I can review the "rules" as I wanted to ensure I abide by them in future, he then then muttered something about a bye law, to which I asked which one, so I can look it up - he didn't know. (I call the local authority to esbalish this) So I guess I've got to find other spots to fly - but if I can't fly in an area with 500 acres of dense woodland it's going to be limited where I live just north of London. In the south of England 500 acres is a lot ! So the morale of the story, you can still get an adverse reaction even when you have gone somewhere safe to fly!