Just to revert to another popular topic, we chose Huntly station as one location There is a vast disused goods yard at the east end, open to the line, and there standing right on the sleeper ends of the main running line were Mr and Mrs 60 something. I politely "please" asked that they move clear of the actual running lines and was asked what business it was of mine, so I simply observed that it was - A - illegal, and B something of an issue with NR at the moment. They moved back about five metres clear. After the train had passed "Mr" came for me asking "who the H are you? What business of mine it was to speak to him, and not to come up here as an English xxxx telling him what to do!" Nice! As there was a fence between him and me, I simply observed that at least I can conduct a debate in civilised English and left it at that. I think if I had shouted "Culloden 1745" it might not have helped, or that just because I have an English accent it doesn't stop me having Scottish ancestry either. Intervention is not without its perils.