Ok guys. it's not just women who like 2 bite at each other as u say. Men, when rattled over something can b far worse. And no u r wrong in as much as no1 neighbour can do exactly what they want even on their own property as the deeds dictate that. No1 is denying her any air space whatsoever as I said, she has other windows 2 open that don't encroach on our or the other neighbour's property. It is not a fire escape just a standard opening window. Not only is the window opening over the boundary on2 our property so does the sill & guttering do as well. Yes, the world is full of many people far worse off than me and yes, maybe we should all focus on that and not ourselves. However, if life really were that simply then none of us would b on here would we? Thanku SimonC 4 what u have just written. I understand what u say about the trespass bit as that applies 2 all sorts of things ie; over hanging trees & bushes in yr garden which I am sure that most of u would have had experience of in one form or another. What I was not sure of was whether or not that applies 2 a window as well. Some r saying yes 2 the opening of the window on2 our property and some r not. Many thanks once again 4 yr advice believe it or not I do appreciate it.