Bought a bottom flat which is leasehold and it had been empty two years. The upstairs flat (only two flats) are trying to use 3 ft of the concrete yard. They have while it was empty installed an outside tap and a washing line and keep their bins there. I moved in at the beginning of the year and asked them not to use my yard. I want to put a fence up at the edge of my land but they refuse and say it needs to be 3ft in so they can use the tap and the washing line. The plan that is registered with the land registry shows the yard is my flats. There is also shared land around the flat and they are using it for their car and there’s no room for my car and if I leave my bin on the shared land they move them to the yard. I put my car on the shared drive when they were out once and they screamed at me banging the door until I moved it. My lease shows it to be shared land clearly and the yard mine alone. They want to use the first 3 ft of my yard. Can I put a fence up to stop this along the boundary or do I have to let them use my yard? Freeholder not interested and won’t get involved. I just don’t want them in my yard and I want to be secure. Am I wrong?