Mr Murphy is not the only prominent No campaigner to suffer intimidation. In July, Michael McMahon, Labour MSP for Uddingston and Bellshill, found a plank with a protruding nail and screw under the tyre of his car, which had a No sticker in the window. “While I can’t prove that it is Yes supporters who are responsible, it takes place in the context of threatening remarks made about me on Facebook,” he said.