Hi the shed is opposite the neighbours shed and there is a gap of about 8" between them, which I take as the boundary. The wall in question is at one end of the shed and looks like it is joined to the wall by about half of it's thickness, while the other half of the wall sit's on what is the boundary gap.
Hi mine is the property on the left
Hi the first photo is from the front of the house and shows where the wall has been. the second and third photo's are from my back widow looking out on to my lean too and the neighbour extension and both shed roofs showing the gap between the sheds. I am wanting to take down my shed this year and the lean too next year, it would be easier for me to take down the whole lot( first photo white painted brick work) but as my neighbour has built on this I want to know where I stand as neighbour is not very friendly. I don't know how long this has been like this.