lol, just had a read up though - it may say different on the deeds. Some people say it's to do with the posts, but ours are the concrete ones which the panels slide into so are in the middle too. Last time we had loads of panels down both sides and we did the left side neighbours did the right (their left). We replaced all 6 so they wouldn't be odd and gave our remaining good ones to the neighbours on the left to fix their left fence!!