My wife & I own a 200 year old house with barns & orchard in Western France. One of our barns is open & has been used for vehicle parking it is accessed over land that previously belonged to our property but was sold by the former owner to a french farmer several years ago. Access was never a problem & he recognised that access to the barn was historic. He has recently sold the land to a Brit. Our Notaire confirms that we have an established right of way although nothing exists on the legal documents. The new Brit owners have emailed & confirmed to us that our right of way will be respected but rumours in the village have been rife for some while that they intent to erect a wall to prevent our access.Yesterday a temporary barrier was erected to allow the erection of a wall. We live in the UK but I have today emailed & phoned the Notaire & emailed the Brits but so far I have not had any response. Can anyone advise me on the best course of action, can a notice be served by me, the Notaire or French Lawyer to stop the works until the matter is resolved?