I have an access way to the rear of the property. The land is owned by the neighbour at the rear (North of the access way) who granted a covenant in 1965 to provide me vehicular access and ensure it is not obstructed. The deed plan says at least 8'6" wide. My direct neighbour, a pub, on the South of the access way, has trees on their rear boundary which have grown very large, pushing the boundary and also their fence such that it is no longer 8'6" wide. They are not covenanted to not obstruct it (the owner of the pub back in 1965 was the grantee of the covenant, he also owned my property and then sold mine off with the benefit of the covenant/access way). As far as I can tell, the pub owner is under no obligation to reinstate the width of the accessway. But their rear boundary no longer fits the shape/line drawn on the plan such that I can no longer fit a car down there without extreme care. I'm not sure how to resolve it beyond asking the pub owner nicely to cut his trees down (I can imagine the answer) or asking the landowner who is bound by the covenant (large freeholder landowner of an estate of maisonnettes and I don't even know how to contact him) to ask the pub owner to do the same. And as this has been the case for a number of years now, can they legitimately refuse to do so, under adverse possession or something like that? Does anyone here have some legal experience to advise on this?